Identifying Controls and Variables
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Identify the: 1. Control Group 2. Independent Variable 3. Dependent Variable 4. What should Smithers' conclusion be?
5. How could this experiment be improved? |
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6. What was the initial observation? Identify the- 8. Independent Variable 9. Dependent Variable 10. What should Homer's conclusion be?
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Bart
believes that mice exposed to microwaves will become extra strong
(maybe  he's been reading too
much Radioactive Man). He decides to perform this experiment by
placing 10 mice in a microwave for 10 seconds. He compared these 10
mice to another 10 mice that had not been exposed. His test consisted
of a heavy block of wood that blocked the mouse food. he found that 8
out of 10 of the micro waved mice were able to push the block away. 7
out of 10 of the non-micro waved mice were able to do the same. |
Identify the- 12. Independent Variable 13. Dependent Variable 14. What should Bart's conclusion be? 15. How could Bart's experiment be improved? |
 Krusty
was told that a certain itching powder was the newest best thing on
the market, it even claims to cause 50% longer lasting itches.
Interested in this product, he buys the itching powder and compares it
to his usual product. One test subject (A) is sprinkled with the
original itching powder, and another test subject (B) was sprinkled
with the Experimental itching powder. Subject A reported having itches
for 30 minutes. Subject B reported to have itches for 45 minutes. |
Identify the- 17. Independent Variable 18. Dependent Variable 19. Explain whether the data supports the advertisements claims about its product. |
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Lisa is working on a science project. Her task is to answer the question: "Does Rogooti (which is a commercial hair product) affect the speed of hair growth". Her family is willing to volunteer for the experiment. |
20. Describe how Lisa would perform this experiment. Identify the control group, and the independent and dependent variables in your description. |
Smithers
thinks that a special juice will increase the productivity of workers.
He creates two groups of 50 workers each and assigns each group the
same task (in this case, they're supposed to staple a set of papers).
Group A is given the special juice to drink while they work. Group B
is not given the special juice. After an hour, Smithers counts how
many stacks of papers each group has made. Group A made 1,587 stacks,
Group B made 2,113 stacks.
Homer
notices that his shower is covered in a strange green slime. His
friend Barney tells him that coconut juice will get rid of the green
slime. Homer decides to check this out by spraying half of the
shower with coconut juice. He sprays the other half of the shower with
water. After 3 days of "treatment" there is no change in the
appearance of the green slime on either side of the shower.