Identify the Controls and Variables KEY
Original document: controls and variables.
Identify the:
1. Control Group -- Group B
2. Independent Variable -- Special Juice
3. Dependent Variable -- Number of stacks
4. What should Smithers' conclusion be? It doesnt' work
5. How could this experiment be improved? ANswers vary
6. What was the iniitial observation? Slime on the shower
7. Control Group - Side sprayed with water
8. Independent Variable - Coco Juice
9. Dependent Variable - Appearance of Slime
10. What should Homer's conclusion be? It doesn't work
11. Control Group - Mice not radiowaved
12. Independent Variable - radio
13. Dependent Variable - Strength of mice
14. What should Bart's conclusion be? Improves strength, maybe inconclusive
15. How could Bart's experiment be improved? More mice, test group before and after treatment
16. Control Group - Subject A
17. Independent Variable - powder
18. Dependent Variable - length of itchiness
19. Explain whether the data supports the advertisements claims about its product. - It does
20. Describe how Lisa would perform this experiment. Identify the control group, and the independent and dependent variables in your description.
Two heads of hair, or same head with half treated and the other untreated can be used. Measure the hair growth.
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Experimental Design of a Controlled Experiment Part I STEP 1: DEFINING THE PROBLEM Every scientific investigation begins with the question that the scientist wants to answer. The questions addressed by scientific inquiry are based on observations or on information gained through previous research, or on a combination of both.
A good scientist will design a controlled experiment to test their hypothesis. In a controlled experiment, only one variable is tested at a time. It is called the
How did you decide what questions can be answered scientifically? The use of evidence and data that could support the question's answer. Name some other aspects of peanut growth that can be measured. # of peanuts produced, growth of peanut plant. Amount of water, fertilizer, or sunlight.
Involves asking questions and locating, interpreting, & processing info from variety of sources. Involves making judgements about the reliability of the sources snd relevance of info. Study with Quizlet and memorize flashcards containing terms like 1. Defining the problem, 2.
3 Give an example of one participant variable, including how it could be controlled in this study. An example of an uncontrolled variable has been completed as an example:
Worksheet created by T. Trimpe 2003 http://sciencespot.net/ Answer Key Krusty Krab Breath Mints 1. Which people are in the control group? The people who received the mint without the secret ingredient (Group B) would be the control group. 2. What is the independent variable? Secret ingredient in the breath mint 3. What is the dependent variable?
Directions: Read through each scenario and identify the independent variable, dependent variable, and the control. Beware- not all experiments will have a control! Sara wants to see if a new brand of hair dye lasts longer than the brand she currently uses. She puts the new hair dye on the left side of her head and the old brand on her right side.
Identify the control group, and the independent and dependent variables in your description. Two heads of hair, or same head with half treated and the other untreated can be used. Measure the hair growth.
Worksheet created by T. Trimpe 2003 http://sciencespot.net/ Scientific Method Name _____ Controls and Variables – Part 1 SpongeBob and his Bikini Bottom pals have been busy doing a little research. Read the description for each experiment and answer the questions. 1 - Patty Power
What is a controlled experiment? D. An experiment designed to check or correct the results of another experiment by removing the variable or variables. What is the main advantage of performing a controlled experiment? D. It eliminate much of the uncertainty about results. In a controlled experiment, everything always changes except one _______.