Question

bart believes that mice exposed to microwaves will become extra strong (maybe hes 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 microwaved mice were able to push the block away. 7 out of 10 of the non - microwaved mice were able to do the same.
identify the-

1. control group
2. independent variable
3. dependent variable
4. what should barts conclusion be?
5. how could barts experiment be improved?

Explanation:

1. The control group is the group not exposed to the treatment (microwaves). In experiments, the control group is used for comparison.
2. The independent variable is what is changed (exposure to microwaves). It's the variable the experimenter manipulates.
3. The dependent variable is what is measured (ability to push the block). It depends on the independent variable.
4. Bart can conclude that there is a slight difference (8 vs 7 out of 10) in the ability to push the block between microwaved and non - microwaved mice, but the difference is not very large.
5. Bart could improve the experiment by using more mice (a larger sample size for more reliable results), varying the microwave exposure time (to see if it has a more significant effect), and repeating the experiment multiple times (to check for consistency).

Answer:

1. The 10 mice not exposed to microwaves.
2. Exposure to microwaves.
3. Ability to push the block.
4. There is a small difference in the ability to push the block between microwaved and non - microwaved mice, but it is not a very significant difference.
5. Use more mice, vary microwave exposure time, and repeat the experiment multiple times.