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Essay on Science in English: Check 200, 300 & 500 Words Essay

Science is the study of logic. It explains why the world is round, why stars twinkle, why light travels faster than sound, why hawks soar higher than crows, why sunflowers face the sun and other phenomena. Science answers every question logically rather than offering mystical interpretations. Students are very interested in science as a topic. This subject is indeed crucial for those hoping to pursue careers in science and related professions.

People who are knowledgeable in science are more self-assured and aware of their environment. Knowing the cause and origin of natural events, a person knowledgeable in science will not be afraid of them.

However, science also has a big impact on a country's technological advancement and illiteracy.

Table of Content

English-language Long and Short Science Essay

Essay on science (200 words), essay on science (300 words), essay on science (400 words), essay on science (500 words), essay on science (600 words).

We have included a brief and lengthy English essay on science below for your knowledge and convenience. The writings have been thoughtfully crafted to impart to you the relevance and meaning of science. You will understand what science is, why it matters in daily life, and how it advances national progress after reading the writings. These science essays can be used for essay writing, debate, and other related activities at your institution or school.

Science entails a thorough examination of the behavior of the physical and natural world. Research, experimentation, and observation are used in the study.

The scientific disciplines are diverse. The social sciences, formal sciences, and natural sciences are some of them. Subcategories and sub-sub-categories have been created from these basic categories. The natural sciences include physics, chemistry, biology, earth science, and astronomy; the social sciences include history, geography, economics, political science, sociology, psychology, social studies, and anthropology; and the formal sciences include computer science, logic, statistics, decision theory, and mathematics.

The world has positively transformed because of science. Throughout history, science has produced several inventions that have improved human convenience. We cannot fathom our lives without several of these inventions since they have become essential parts of them.

Global scientists persist in their experiments and occasionally produce more advanced innovations, some of which spark global revolutions. Even if science is helpful, some people have abused knowledge, usually those in positions of authority, to drive an arms race and destroy the environment.

There is no common ground between the ideologies of science and religion. These seeming opposite viewpoints have historically led to a number of confrontations and still do.

Science is a way to learn about, comprehend, examine, and experiment with the physical and natural features of the world in order to apply it to the development of newer technologies that improve human convenience. In science, observation and experimentation are broad and not restricted to a specific concept or area of study.

Applications of Science

Science has given us almost everything we use on a daily basis. Everything, from laptops to washing machines, microwaves to cell phones, and refrigerators to cars, is the result of scientific experimentation. Here are some ways that science affects our daily lives:

Not only are refrigerators, grills, and microwaves examples of scientific inventions, but gas stoves, which are frequently used for food preparation, are as well.

Medical Interventions

Scientific advancements have made it feasible to treat a number of illnesses and conditions. Thus, science encourages healthy living and has helped people live longer.

Interaction

These days, mobile phones and internet connections are necessities in our life and were all made possible by scientific advancements. These innovations have lowered barriers to communication and widened global connections.

E nergy Source

The creation and application of numerous energy forms have been facilitated by the discovery of atomic energy. One of its greatest innovations is electricity, and everyone is aware of the effects it has on daily life.

Variety in Cuisine

There has also been an increase in food diversity. These days, a wide variety of fruits and vegetables are available year-round. It's not necessary to wait for a given season to enjoy a certain meal. This modification is the result of scientific experimentation.

So, science is a part of our daily existence. Without scientific advancements, our lives would have been considerably more challenging and varied. Nonetheless, we cannot ignore the fact that a great deal of scientific innovation has contributed to environmental deterioration and a host of health issues for humankind.

There are essentially three main disciplines of science. The Natural Sciences, Social Sciences, and Formal Sciences are some of them. To examine different aspects, these branches are further divided into subcategories. This is a thorough examination of these groups and their subgroups.

Scientific Subdisciplines

Natural Science

This is the study of natural phenomena, as the name implies. It investigates how the cosmos and the world function. Physical science and life science are subcategories of natural science.

a) Science of Physics

The subcategories of physical science comprise the following:

Physics is the study of matter's and energy's properties.
Chemistry is the study of the materials that make up matter.
The study of space and celestial bodies is called astronomy.
Ecology is the study of how living things interact with their natural environments and with one another.
Geology: It studies the composition and physical makeup of Earth.
Earth science is the study of the atmosphere and the physical makeup of the planet.
The study of the physical and biological components and phenomena of the ocean is known as oceanography.
Meteorology: It studies the atmospheric processes.

The subcategories of life science include the following:

The study of living things is called biology.
The study of plants is known as botany.
The study of animals is known as zoology.

c) Social Science

This includes examining social patterns and behavioral patterns in people. It is broken down into more than one subcategory. Among them are:

History: The examination of past occurrences
Political science is the study of political processes and governmental structures.
Geographic: Study of the atmospheric and physical characteristics of Earth.
Human society is studied in social studies.
Sociology: The study of how societies form and operate.

Academic Sciences

It is the area of study that examines formal systems like logic and mathematics. It encompasses the subsequent subcategories:

Numbers are studied in mathematics.
Reasoning is the subject of logic.
Statistics: It is the study of numerical data analysis.
Mathematical analysis of decision-making in relation to profit and loss is known as decision theory.
The study of abstract organization is known as systems theory.
Computer science is the study of engineering and experimentation as a foundation for computer design and use.

Scientists from several fields have been doing in-depth research and testing numerous facets of the subject matter in order to generate novel ideas, innovations, and breakthroughs. Although these discoveries and technologies have made life easier for us, they have also permanently harmed both the environment and living things.

Introduction

Science is the study of various physical and natural phenomena' structures and behaviors. Before drawing any conclusions, scientists investigate these factors, make extensive observations, and conduct experiments. In the past, science has produced a number of inventions and discoveries that have been beneficial to humanity.

I deas in Religion and Science

In science, new ideas and technologies are developed through a methodical and rational process; in religion, however, beliefs and faith are the only factors considered. In science, conclusions are reached by careful observation, analysis, and experimentation; in religion, however, conclusions are rarely reached through reason. As a result, they have very different perspectives on things.

Science and Religion at Odds

Because science and religion hold different opinions on many issues, they are frequently perceived as being at odds. Unfortunately, these disputes occasionally cause social unrest and innocent people to suffer. These are a few of the most significant disputes that have happened.

The World's Creation

The world was formed in six days, according to many conservative Christians, sometime between 4004 and 8000 BCE. However, cosmologists assert that the Earth originated about 4.5 billion years ago and that the cosmos may be as old as 13.7 billion years.

The Earth as the Universe's Center

Among the most well-known clashes is this one. Earth was considered to be the center of the universe by the Roman Catholic Church. They say that it is surrounded by the Sun, Moon, stars, and other planets. Famous Italian mathematician and astronomer Galileo Galilei's discovery of the heliocentric system—in which the Sun is at the center of the solar system and the Earth and other planets orbit it—led to the conflict.

Eclipses of the Sun and Moon

Iraq was the scene of one of the first wars. The locals were informed by the priests that the moon eclipse was caused by the gods' restlessness. These were seen as foreboding and intended to overthrow the kings. When the local astronomers proposed a scientific explanation for the eclipse, a disagreement arose.

There are still many myths and superstitions concerning solar and lunar eclipses around the world, despite astronomers providing a compelling and rational explanation for their occurrence.

In addition to these, there are a number of other fields in which religious supporters and scientists hold divergent opinions. While scientists, astronomers, and biologists have evidence to support their claims, the majority of people adhere closely to religious beliefs.

Not only do religious activists frequently oppose scientific methods and ideas, but many other facets of society have also taken issue with science since its discoveries are leading to a host of social, political, environmental, and health problems. Nuclear weapons are one example of a scientific invention that threatens humanity. In addition, the processes involved in preparation and the utilization of the majority of scientifically created equipment contribute to pollution, making life more difficult for all.

In the previous few decades, a number of scientific advancements and discoveries have greatly eased people's lives. The previous ten years were not an anomaly. A good number of important scientific discoveries were acknowledged. The top ten most amazing recent scientific inventions are shown below.

New Developments and Findings in Science

Amputee Gains Control of Biomechanical Hand via Mental After a tragic accident took away his forearm, Pierpaolo Petruzziello, an Italian, used his mind to control a biomechanical hand attached to his arm. The hand used wires and electrodes to connect to the nerves in his arm. He became the first to become skilled at doing motions like gripping objects, wriggling his fingers, and moving.

The Global Positioning System

In 2005, the Global Positioning System, or GPS as it is more often known, went into commercial use. It was incorporated into mobile devices and worked wonders for tourists all over the world. Traveling to more recent locations and needing instructions couldn't be simpler.

The Self-Driving Car Toyota debuted Prius shortly after Google launched its own self-driving car experiment in 2008. The accelerator, steering wheel, and brake pedals are absent from this vehicle. It runs without the need for user input because it is driven by an electric motor. To guarantee that the driverless experience is seamless and secure, it is integrated with specialized software, a collection of sensors, and precise digital maps.

Android, widely regarded as one of the most significant innovations of the decade, revolutionized the market by flooding it with devices running Java and Symbian earlier on. These days, Android is the operating system used by the majority of smartphones. Millions of applications are supported by it.

c) Computer Vision

A number of sub-domains fall under the umbrella of computer vision, including learning, video tracking, object recognition, object pose estimation, event detection, indexing, picture restoration, and scene reconstruction. In order to produce symbolic information, the field includes methods for processing, analyzing, obtaining, and understanding images in high-dimensional data from the real world.

d) Touch Screen Technology

It appears that touch screen technology has taken over the planet. The popularity of touch screen gadgets can be attributed to their ease of use. These gadgets are becoming quite popular everywhere.

e) Method of 3D Printing

The 3D printer is capable of producing a wide range of items, such as lamps, cookware, accessories, and much more. Alternatively referred to as additive manufacturing, this process uses digital model data from electronic data sources like Additive Manufacturing Files (AMF) to construct three-dimensional items of any shape.

Git Hub is an online hosting service and version control repository that was founded in 2008. It provides features including bug tracking, task management, feature requests, and the sharing of codes, apps, and other materials. The GitHub platform was first developed in 2007, and the website went live in 2008.

f) Smart Timepieces

The market for smart watches has been around for a while. The more recent models, like the one introduced by Apple, have garnered enormous popularity and come with a number of extra capabilities. Nearly all of the functionality found on smartphones are included in these watches, which are also more convenient to wear and use.

g) Websites for Crowdfunding

The emergence of crowdsourcing websites like Indiegogo, Kickstarter, and GoFundMe has been a blessing for innovators. Inventors, artists, and other creative people can share their ideas and gain the funding they need to put them into action by using these websites.

Global scientists constantly observe and experiment to develop new scientific discoveries that improve people's lives. Not only do they consistently create new technologies, but they also adapt the ones that already exist whenever there is an opportunity. Even while these innovations have made life easier for humans, you are all aware of the numerous environmental, social, and political risks they have brought about.

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Essay on Science- FAQs

Who is father of science.

Galileo is the father of science.

Why is it called science?

The word "scientia" has Latin origins and originally meant "knowledge," "an expertness," or "experience."

What is science for students?

Science is the study of the world by observation, recording, listening, and watching. Science is the application of intellectual inquiry into the nature of the world and its behavior. Think like a scientist, anyone can.

What is science's primary goal or objective?

Science's primary goal is to provide an explanation for the facts. Moreover, science does not prohibit the explanation of facts in an arbitrary manner. Additionally, science organizes the data and develops theories to explain the data.

Describe what a scientific fact is.

Repeatable, meticulous observations or measurements made through experiments or other methods are referred to as scientific facts. Furthermore, empirical evidence is another name for a scientific fact. Most importantly, the development of scientific hypotheses depends on scientific facts.

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Essay on Science: Meaning, Scope, Nature, Technology and Society

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Essay on Science:- 1. Meaning and Definitions of Science 2. Scope of Science 3. Nature of Science 4. Physical Science 5. Science and Social Environment 6. Science and Technology 7. Science and Society 8. Scientific Method and Its Steps.

Essay on Scientific Method and Its Steps

Essay # 1. Meaning and Definitions of Science :

Meaning of Science:

The English word Science is derived from a Latin Verb ‘Scire’, which means ‘to know’ and Latin Noun ‘Scientia’ which means ‘knowledge’. Meaning of Science is based on German word ‘ Wissenchaft’, which means systematic, organized knowledge. Thus, Science is a systematized knowledge.

The necessity and curiosity of man to know about himself and his surroundings has led him to investigate, find and to know about living beings and nature, which to verifiable knowledge of facts. But Science is not always about the collection of facts or development of new concepts or ideas. It is all about the passion for the discovery that drives one to explore the environment and the nature in every aspect.

Science is basically founded to investigate the nature and its processes. Although there are a number of other methods that can be utilized to acquire the knowledge about nature, but science is considered as the only one that results in the acquisition of reliable knowledge. Hence, Rene Descartes said, “Science is a method of investigating nature that discovers reliable knowledge about it.”

Science is the investigation of unknown phenomena and it also looks and compares with existing principles, theories and practices. Science is both a particular kind of activity and also the result of that activity. Science uses tools like observation, measurement and scientific experimentation and is entirely based on the observable facts.

Science is observation, identification, description, experimentation, investigation and theoretical explanation of the phenomenon that occur in nature.

Science could be described as the study, which attempts to perceive and understand the nature of the universe both living and non-living in its part and as a whole.

Definitions of Science :

During early times people perceived Science, as what the scientist does. There are many definitions available, though not a single definition could be universally accepted.

Some of the definitions are mentioned here to understand it from different angles:

1. According to Columbian Dictionary:

“Science is an accumulated and systematized learning in general usage restricted to natural phenomenon”.

2. Einstein (1879-1955):

“Science is an attempt to make the chaotic diversity of our sense experience corresponds to logically uniform system of thought”.

3. Fitzpatrick (1960):

“Science is a cumulative and endless series of empirical observations, which results in the formation of concepts and theories, with both concepts and theories being subject to modification in the light of further empirical observations. Science is both a body of knowledge and the process of acquiring it”.

4. Bronowski, J. (1956):

“Science as the organization of our knowledge in such a way that it commands or makes possible the explanation of more of the hidden potentialities found in the environment”.

5. Conant (1957):

“An interconnected series of concepts and conceptual schemes that have developed as a result of experimentation and observation and are fruitful of further experimentation and observation”.

6. Fisher (1975):

“Science is the body of Knowledge obtained by methods, based upon observation”.

The above definitions clearly reveal that Science is both a process and product. A comprehensive definition of Science would be “science is a systematized knowledge gained through human observation and experimentation of cause revealing the unknown phenomenon of nature and universe both living and non-living involving the process of critical, creative thinking and investigation including sometimes sudden insights too.”

Science = Process + Product

= Methods + Knowledge

= Scientific Method + Scientific Attitude + Scientific Knowledge

Essay # 2. Scope of Science :

Science is a body of knowledge obtained by methods based upon observation. Observation is authentic and that it is only through the senses of man that observations can be made. Thus, anything outside the limits of man’s senses is outside the limits of science. In other words, science deals with the universe and galaxies in the forms of matter and energy which is in the form of living and non-living.

Science employs a number of instruments to extend mail’s senses to the extremely minute to very vast, to the short-time duration or long-time duration, to dilute or to concentrate and so on and so forth which does not alter the conclusion that science is limited to that which is observable.

Thus, as in any other discipline contemporary experimental techniques set up some practical limitations but these are not to be confused with the intrinsic limitations inherent in the very nature of science. The knowledge of science is tested and retested and also reinvented.

Today the disciplines of Science and Social Sciences are drawing into each other. Behavioural zoologists study the sociology and psychology of animals. Archaeologists derive new insights from the rapid advances in chemical and physical analysis. Hence sciences should be understood with interdisciplinary approach within science as a whole. Biology draws on chemistry, physics and geology.

ADVERTISEMENTS: (adsbygoogle = window.adsbygoogle || []).push({}); Essay # 3. Nature of Science:

Human by birth has quest for knowledge as they are curious of knowing about nature. They have a highly developed brain because of which they can observe precisely, correlate observations and predict future happenings on the basis of their observation. This ability helped humans to adjust to nature. The process of observing, describing, exploring and using the physical world is science.

Science has certain characteristics which distinguish it from other spheres of human endeavour.

These characteristics define the nature of science as discussed below:

Science is a Particular way of Looking at Nature :

1. Science is a way of learning about what the nature is, how the nature behaves and how the nature got to be the way it is.

2. Science focuses exclusively on the nature.

3. It is not simply a collection of facts; rather it is a path to understand the phenomenon underlying.

(i) Science is, just the nature existing around you.

(ii) Every day we look at the rising sun and pay great respect to it for bestowing the earth with its light in energy form.

(iii) The knowledge of all that is in the universe from the tiniest subatomic particles in an atom to universe and galaxies.

Science as a Rapidly Expanding Body of Knowledge :

1. Science is the dynamic, ever expanding knowledge, covering every new domain of experiences.

2. Knowledge refers to the product of science, such as the concepts and explanations.

3. Research being carried out in the field of science resulted in developing more knowledge at a faster pace sometimes by replacing old concepts, ideas or principles.

The technological developments that took place in recent times enhanced the acceleration of knowledge.

Science as an Interdisciplinary Area of Learning:

1. In the last two decades there have been studies claiming that science is becoming even more an interdisciplinary area of learning.

2. Science cannot be taught in isolation. All the branches of science are interdependent upon all other and there are a number of facts and principles which are common to various science subjects.

3. Knowledge started expanding day by day; scientists started specialising in certain areas. Hence the knowledge has been organized for convenience into different disciplines.

Environmental science is an interdisciplinary academic field that integrates physics, biological and information sciences (including ecology, biology, physics, chemistry, zoology, mineralogy, oceanology, limnology, soil science, geology of atomospheric science and geodesy).

Science as a Truly International Enterprise :

1. International collaboration in most of the projects is the order of the day.

2. In collaborative research, visibility among the peer and active exploitation of complementary capabilities increase.

3. Share the costs of the projects that are large in scale and scope.

4. Able to access expensive physical resources.

5. Exchange ideas in order to encourage greater creativity.

The large Hadron collides; at the European Organization for Nuclear Research (CERN) has been build up by scientists drawn from many countries including India. The experiment on this machine is being conducted by scientists from many countries including many Indian scientists. In this sense, science do not belong to any single country or a group of countries and it would be morally and ethically wrong to deny the fruits of scientific development to any country in the world.

Science as Always Tentative :

Scientific models are always being questioned. Up-and-coming scientists always find gaps or errors in existing scientific models and develop a new one in place of them. In scientific field models have been tested and refined to such an extent that errors are likely to be minor. The real evidences need to be scrutinized carefully.

Marine researchers have expressed concern about the effect of global warming on the future of coral reefs because increasing sea temperature cause coral bleaching. Bleaching happens; the corals expel the algae that live within their cells die, when temperature rises. Recent research have tentatively showed that some algae may be able to adapt to temperature rises, consequently improved the chances that corals can survive.

Tentative Nature of Scientific Theories :

1. Scientific theories took decades in their development.

2. When two competing theories explain their observations related to a certain phenomenon, Scientists prefer to accept a theory which explains larger number of observations with few assumptions.

There was a time when both the geocentric and the heliocentric theories explained all the planetary observations. However geocentric theory had to introduce a new assumption every time. On the other hand, the heliocentric theory with just one assumption that all the planets revolve round the sun, it explained every available observation and eventually survived.

The fact remains that scientific theories are tentative and are always subject to change.

Science Promotes Skepticism :

“In science, keeping an open mind is a virtue just not so open that your brains fall out”-James Oberg.

1. Skepticism does not mean doubting the validity of everything, rather to judge the validity of a claim based on objective empirical evidences.

2. David Hume, the 18th century philosopher viewed that we should accept nothing as true unless the evidences available makes the non-existence of the thing more miraculous than its existence.

3. We examine the available evidences before reaching a decision until sufficient evidences are found.

Scientists are Highly Skeptic People :

‘Science is what scientists do’.

1. The scientists in different fields try to describe the phenomena in nature and establish their relationships.

2. After having described the phenomena, scientists attempt to find out the reason behind and make predictions.

3. Scientists use ideas of their own and of others as tools for testing and gaining knowledge. They use many resources to get valid answers to their questions and problems, by designing their own experiments and invent new tools with which they observe and check different phenomena. Hence, scientists are highly skeptic people.

For instances, if we look at Newton’s story the way he was inspired to formulate his theory of gravitation by watching the fall of an apple from a tree speaks his skeptic nature. Though many scientists and other common men were aware that all the objects descend perpendicularly to the ground, they never pondered upon it. This incident prompted Newton to explore the possibility of connecting gravity with the force that kept the moon on its orbit. This led him to the universal law of gravity.

Charles Goodyear (1800) a chemist and manufacturing engineer who developed vulcanized rubber. His discovery was accidental, where he explored the situation and after five years of searching for a more stable rubber and stumbling upon the effectiveness of heating.

Science Demands Perseverance from its Practitioners :

1. The important characteristic of science that brings development and progress is perseverance of scientists.

2. Scientists getting an inspirational idea or a creative thought have to persist with the idea to take it to its logical conclusions, based on facts or observations.

3. Scientists may work alone or join with others in developing the idea further to find out ways to discover or invention, While at other times the scientists can make only a beginning and then others join them in developing the idea further.

The discovery of the wonder drug pencillin by Alexander Fleming in 1929 is the result of an incident happened by a chance which led to serious observation followed by hard work paved the way for discovery of many other antibiotics like Streptomycin and Erythromycin.

Science as an Approach to Investigate and as a Process of Constructing Knowledge :

1. The investigations in science involve some form of scientific method.

2. Scientists for seeking solution to a problem use different methods like observation, prediction and sometimes experimentation to study the cause and effect relationship.

3. Whatever we observe through our senses (information) is sent to the brain and the brain processes the information by registering, classifying, generalising etc., and converts into knowledge. Sensory perception is primary in knowledge development.

4. Here, the individual constructs the knowledge on his own by applying their own mental abilities and intelligence to process the information received through senses.

5. The basic unit of knowledge is fact. In science any repeatedly verifiable observation becomes a fact.

6. Scientific approach always is based on cause and effect relation.

Examples of facts are:

i. Solids have definite shape and volume.

ii. The rainbow is seen in a direction opposite to that of the sun.

Essay # 4. Physical Science :

The child is interested to learn things which are related to his experiences. This could be possible only when the subjects are integrated and correlated rather than in isolation. The other physical sciences also have equally contributed a lot to the field of biological studies.

Obviously we can’t teach and understand each and every thing about a particular branch of science without the help of other sciences. The child on the other hand can’t appreciate and understand the branches of science in isolation from others. The study of interrelatedness helps the child to understand the concepts easily, more interesting and natural.

Science cannot be taught in isolation. All the branches of science are interdependent upon each other and there are a number of facts and principles which are common to various science subjects. This however does not mean that the teacher of one branch of science ought to know everything of other branches of science.

But it is very much essential that he should have sufficient knowledge of other sciences so as to bring about integration of subjects. He should also know where to depart from his own subject and how much should he venture into areas which are not his own.

The following example may be taken:

1. A teacher while teaching the sense organs says an eye should make a parallelism with a camera, which the student has learnt in physics. To understand the images, knowledge of image formation by the convex lens is essential.

E.g. (a) The rays which pass through the centre of the lens travel straight without any change in direction.

(b) The rays which run parallel to the principal axis pass through the focus of the lens after refraction from the lens.

Again when the teacher is teaching the same topic in the period of human physiology, the defects in the eye i.e., short sightedness (by the elongation of the eyeball and the image in formed a little in front of the retina and not exactly on the retina) he should know other factors also which cause the shifting of the image.

E.g. (a) By changing the distance between the lens and object.

(b) By changing the distance between the lens and the screen.

If the teacher possesses knowledge of physics he can most successfully correlate his topic with other branches of science and make the whole knowledge easily acceptable to the children.

2. Similarly while teaching digestive system the teacher should have adequate knowledge of chemistry without the help of which he cannot justify the topic.

The teacher must correlate it by telling about:

(a) Soluble and insoluble constituents of our diet.

(b) Chemistry of different digestive juices and their effect on the constituents of food that we take.

(c) The final products and the process of assimilation of products by the membranes of different organs. This will involve the reference of concepts of osmosis, density and the pressure etc.

Science is universal; it has no barrier of any kind as too has no barriers. The recent advances in the field of science and technology and its wide application as well as their use in daily life situation justify the utilitarian value of science. Taxonomy reveals the unity in diversity. Evolution and mutation theories help us understand the relation of living forms.

Motion, Mass and Energy related theories relate Universe, Sun, Earth and all other planets and their existence. Further their relation to life forms. Hence in nature everything is in relation and co-existence. This is what has to be understood by the student in the study of scientific theories and phenomenon.

Essay # 5. Science and Social Environment:

Relating science education with the environment of a child has been the prime concern of educationists. The environment of the child includes natural and social environment.

In science we learn about the nature’s phenomena. Human is a part of nature. Therefore, every effort should be made to integrate science with learning the environment. The science curriculum should address issues and concerns related to environment such as climate change, acid rain, growth of water, eutrophication and various types of pollutions etc. Further, it should be applied to society to understand social phenomenon in a scientific way and solve all social problems with all objectivity and universal application.

Science teachers should aim to enlighten the young minds with the wonders of science. They should be engaged to construct the knowledge through an interdisciplinary approach appreciating its relation and impact on the social and natural environment. They can recognize the competence of science by doing activities related to their everyday life.

Current issues and events in science like new technological innovations, scientific discoveries, can be examined through social, economic and ethical perspectives to help students in relating these issues with one another and explore their areas of interest.

The significance of chemistry to society can be highlighted by discussing the chemical components used in products that have altered agriculture, food, health, medicine, electronics, transportation, technology and the natural environments. To understand its relevance to home economics, one can think what happens to the electricity bill if solar cooker, solar heater, solar lanterns and CFL (compact fluorescent lamp) are used.

For Instances- Bhopal Tragedy Unforgettable Industrial Disaster :

Industries are the symbols of development, but other side of the coin is lack of safety measures and irresponsibility of emitting pollutants. On 2 nd December 1984 about 3000 human beings died and 5000 were effected seriously, thousands of cattle, birds, dogs, and cats died in just one night at Bhopal tragedy.

These mass deaths were due to the leakage of Methyle Isocyanate (MIC) into the air from an insecticide factory managed by union carbide. Thousands of lives helplessly crushed in this incident. This is unforgettable industrial disaster towards air pollution.

Essay # 6. Science and Technology :

Technology is often equated to applied sciences and its domain is generally thought to include mechanical, electrical, optical, electronic devices and instruments, the house hold and commercial gadgets, equipment used in physics, chemistry, biology, nuclear science etc. These various sub-domains of technology are interrelated. Modern technology is an applied science because the basic principles of sciences are applied to develop the technology.

Science and technology are linked to each other. Discoveries in science have paved the way for the evolution of new technologies. At the same time technology has been instrumental in the development of science.

Han’s Christian Oersted, one of the leading scientists of the 19 th century, played a crucial role in understanding electromagnetism. In 1820 he discovered that a compass needle got deflected when an electric current passed through a metallic wire placed nearby. Through this he showed that electricity and magnetism were related phenomena. His research later created technologies such as radio, television and fiber optics.

The development of microscope by Antony Van Leeuwenhock, where he interwined optical principles with astronomical and biological understanding which further led to the development of the telescope.

Thus, science influences technology by providing knowledge and methodology. But on the other hand technology also influences science by providing equipments to find out the unknown phenomenon of the nature. This shows interdependence of science and technology.

In science we inquire how a natural phenomenon occurs, while in technology we deal with how the scientific processes can also be used for human welfare. Technology as a discipline has its own autonomy and should not be regarded as a mere extension of science.

Basically science is an open ended exploration; its end results are not fixed in advance. Technology on the other hand, is also an exploration but usually with a definite goal in mind. Science is universal; technology is goal oriented and often local specific.

People today are faced with an increasingly fast-changing world where the most important skills are flexibility in adapting to new demands and creativity in taking advantages of new opportunities. These imperatives have to be kept in mind in shaping science education.

Essay # 7. Science and Society :

The applications of science and technology have led to the remarkable improvement in the quality of human life. It has given lot of comfort and leisure to the human kind on one side and equipped it with skills needed for problem solving and decision making on the other side. It has changed the outlook of the individual on different beliefs, myths, taboos and superstitions.

People started working with logical thinking, objectivity and open mindedness. Modern society believed in the co-existence of diversity in social and political thinking. Science always works for the welfare of our future generations by talking about sustainable development. Society is also showing its concern using the scientific knowledge for peace and prosperity of the society.

For instances, consuming tobacco (Gutkha, cigarettes, beedi, khaini) damages the internal organs of the body. The numbers of addicted people at the age of 15 or below are 57.57 lakhs (68%) both in Telengana and Andhra. When they reach 30 yrs. of age thin internal organs becomes damaged, this may lead to several problems and sometimes lead to death.

It is a dangerous trend in our country. So, we have to inculcate healthy habits in children by teaching science. Many youth are also addicted to alcohol which damages the liver and other body organs which in turn also affects human resource development.

Let Us Think It Over:

Do you know that our eyes can live even after our death? By donating our eyes after we die, we can give sight to a blind person.

About 35 million people in the developing world are blind and most of them can be cured. About 4.5 million people are with corneal blindness, can be cured by corneal transplantation of donated eyes. Out of these 4.5 million, 60% are children below the age of 12 yrs. So, if we got the gift of vision, let us pass it on to somebody who does not have it.

Essay # 8. Scientific Method and Its Steps:

1. The development of scientific attitude and training in scientific method are two cardinal aims for the teaching of science. In other words it is a method of solving a problem scientifically.

2. Scientific method involves reflective thinking, reasoning and results from the achievement of certain abilities, skills and attitudes.

Definition of Scientific Method :

Carl Pearson says, ‘The scientific method is marked by the following features:

1. Careful and accurate classification of facts.

2. Observation of their co-relation and sequence.

3. Discovery of scientific law by creative imagination, and self-criticism.

4. The final touch-stone of equal validity for all normally constituted needs.

Steps of Scientific Method:

Observation :

Observation is the base for science. It knows the phenomenon through senses. Without control of external or internal situations.

1. It is the way we perceive the nature and using the senses and processed through the faculty of brain.

2. It is a process of checking conclusions. After observation we try to explain what we have seen based on cause and effect relation. In science repeatedly verifiable observations becomes a fact.

Facts are specific verifiable information obtained through observation and measurement. They are verifiable with reference to time and place.

Some facts do not require the time and place to be mentioned. Ex- Iron is a greyish hard metal.

Some facts are specific like ‘water boils at 100°C at 760mm Hg of pressure.

A concept is an idea or a mental image of an object is generalised forms of specific relevant direct experiences interpreted in a language or word form for communication.

1. Concepts. Ex. plant, animal etc.

2. According to Bruner, every concept has five elements i.e. name, example (positive & negative), attributes (characteristics) attribute value and rule (definition).

3. Concepts formed without direct experiences may lead to misconceptions. Hence, care should be taken in provide direct experiences in learning process.

Principles :

Principles are based on several concepts. They are the representation of phenomena on which the activities or behaviour can be generalised to some extent.

A number of concepts combine in a way to convey meaning which can be tested and verified universally, becomes a principle.

Ex- Mytosis, Meiosis, Glycolysis, Photosynthe sis, Mutations, Evolution etc.

Scientific Inquiry :

It occupies a prominent place in science as it helps pupils to understand how scientific ideas are developed.

1. It is broadly defined as a search for truth or knowledge. Emphasis is placed on the aspects of search rather than on the mere acquisition of knowledge.

2. Empirical testing, reasoning and controlled experimenting are some of the methods of science inquiry.

The steps in scientific methods are illustrated with a specific example:

The teacher demonstrates an experiment to the students to show that water boils at low temperature under low pressure.

1. Sensing the Problem:

The teacher provides a situation in which the students feel the need of asking some questions. Teacher may also put questions which require reflective thinking and reasoning on the part of the students, this may become a problem to solve. The interest of the students, availability of the material and its utility should be considered.

A flask was taken and filled it half with water. Boil the water over a flame. Remove the flame. Cork the flask. Invert it and pour cold water on the flask. The students observe the process carefully and saw that water has begun to boil again when cold water is poured on the bottom of the inverted flask. They at once sense a problem for themselves finding out the reason and explanation of what they have seen.

2. Defining the Problem:

The student now defines the problem in a concise, definite and clear language. There should be some key-words in the statement of the problem, which may help in better understanding the problem.

The student can give different statements such as:

(i) Why is water boiling?

(ii) Why did the water boil first?

(iii) Why was the flask corked and then inverted?

(iv) Why was cold water poured over the bottom of the inverted flask?

(v) Why did the water boil in the flask when cold water is poured over the inverted flask?

Of all these statements, the last one is in fact the problem which should be solved.

3. Analysis of the Problem:

The student now fined the key words and phrases in the problem which provide clue to further study of the problem. At the same time, the students must have knowledge of every key word and the understanding of the whole problem. In our selected problem ‘water boil’ or the boiling of the water are the key words which gives us clue to find information regarding the boiling of water under different conditions.

Collection of Data :

After analysis of the problem the teacher suggests references on the problem. The student needs to plan the subsequent activities. They have to discuss, consult references, use audio-visual aids such as models, pictures, specimens, organise field trips and do the experimentation carefully. Unnecessary data should also be discarded.

Formulation of Tentative Solutions or Hypothesis :

After collection of data, the students are asked to formulate some tentative hypothesis. A hypothesis is the probable solution to the problem in hand, which should be free from bias and self-inclination.

The students can suggest the hypothesis like:

Water will also boil:

(i) When flask is not inverted.

(ii) When water is not boiled but only warmed.

(iii) When hot water is poured over the inverted flask containing cold water.

(iv) When hot water is poured over the inverted flask containing boiled water.

(v) When cold water is poured over the flask containing cold water.

(vi) When cold water is poured over the inverted flask containing boiled water.

These are some of the hypothesis the students can suggest.

Selecting and Testing the Most Appropriate Hypothesis :

The students can select the most tenable hypothesis by rejecting others through experimentation and discussion.

The students have found out that water begins to boil again in an inverted flask when cold water is poured over it. In no other condition this was possible and so all other hypothesis were rejected.

Drawing Conclusions and Making Generalisations :

In this step, conclusions are drawn from the experiments. The results should support the expected solution. Experiments can be repeated to verify the consistency and correctness of the conclusion drawn and should be properly reported. When some conclusions are drawn from different sets of experimentation under similar situations, they may go for generalisation of their conclusion.

The generalisation can be made by arranging a set of experiments which also show the same conclusion already reached at.

The effect of varying pressure on boiling point of water can be found out by conducting experiments. From these conditions, one can generalise that pressure has a direct effect on the boiling point of water i.e. the increase in pressure raises the boiling point of water and vice-versa.

Application of Generalization to New Situations :

The student should apply generalization under new situations in his daily life minimising the gap between classroom situation and real life situation.

The student will apply the generalization that increase in pressure increases the boiling point of water and vice-versa, to explain the reason of – ‘why’ is it difficult to cook meat and pulses at higher altitudes.

Why do the pulses take lesser time for cooking in pressure cooker.

In this way the student will apply the generalization to other life situations.

Scientific Method- A Critical View :

A few points about the scientific method need to be emphasized.

Scientific method is not a prescribed pathing for making discoveries in science. Very rarely the method has remained a key to discovery in science. It is the attitude of inquiry, investigation and experimentation rather than following set steps of a particular method that leads to discoveries and advancement in science.

Sometimes a theory may suggest a new experiment at other times an experiment may suggest a new theoretical model. Scientists do not always go through all the steps of the method and not necessarily in the order we have outlines above. Investigation in science often involves repeated action on any one or all steps of the scientific method in any order.

Many important and path breaking discoveries in science have been made by trial and error, experimentation and accidental observation. The Rontgen and Fleming both of them did not set out the following scientific steps to discover X-rays and penicillin, but they had qualities of healthy intuition and perseverance which took them to their goals. Besides intuition informed guesswork, creativity, an eye for an unusual occurrence, all played a significant role in developing new theories, and there by progress in science.

The validity of a hypothesis depends solely on the experimental test and not on any other attributes. There is no authority in science that tells you what you can criticize and what you cannot criticize. Thus, science is highly objective discipline.

A scientific method with its linear steps makes us feel that science is a ‘closed box approach’ of thinking. However in practice science is more about thinking ‘out of the box’. There is tremendous scope for creativity in science. Many times in science an idea or a solution to a vexing problem appears to arise out of creativity and imagination. Ex- The stories of Archimedes, Newton, Robert Hook, Fleming and Madam Curie etc.

People keep floating all kinds of theories; often they narrow their arguments in scientific terms. This may create lot of confusion among them, but we should remember that a theory is valid only if it passes the test of experimentation, otherwise it may just be a matter of faith.

The scientific method imposes operational limitation on science. It does not help us to make aesthetic or value judgment. For example, frequency of the colour of paintings may be determined but there is no scientific method to label the paintings of two artists as great or not so great. Scientific method does not prove or refute the ideas such as existence of God and existence of life after death.

Following scientific method does not ensure that a discovery can be made. However, the skills learnt in making observation, analysis, hypothesis, prediction from a hypothesis and it’s testing by experimentation help us in developing scientific attitude.

All of us will benefit immensely if we imbibe the spirit of scientific method in our personal lives. The scientific method tells us to be honest in reporting our observations or experimental results, keep an open mind and to be ready to accept other points of view. If our own view is proved wrong.

Scientific method is a logical approach to problem-solving.

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