Identify Controls and Variables KEY
Identify Controls and Variables KEY
***Students will be asked to state
the hypothesis for each experiment.
SMITHER’S—
Hypothesis: The special juice will increase productivity
1. Group B
2. independent variable—special juice
3. dependent variable—number of stacks
4. The special juice does not increase productivity.
5. Answers will vary.
HOMER’S—
Hypothesis: Coconut juice will get rid of green slime in the shower.
6. the shower covered in green slime
7. ½ shower with water
8. independent variable—coconut juice
9. dependent variable—green slime
10. Coconut juice does not get rid of slime.
BART’S—
Hypothesis: Exposure to microwaves will increase the strength of the mice.
11. non-exposed mice
12. independent variable—microwaves (or exposure)
13. dependent variable—strength of the mice
14. slight increase—repeat the experiment
15. Answers will vary.
KRUSTY’S—
Hypothesis: The new itching powder lasts longer than the original powder.
16. Subject A (original powder)
17. independent variable—new itching powder
18. dependent variable—how long the itching lasts
19. Yes, it supports the data. (50% of 30 = 15 AND 30 + 15 = 45)
LISA’S—
Hypothesis: Rogooti will increase the speed of hair growth.
20. Answers will vary.
Example:
Bart = experiment independent variable = “Rogooti” (hair product) Homer = control dependent variable = hair growth of family members
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