Isabelle decides to shave a 1 x 2-inch patch of her hair and the same-sized patch of her dog's hair. She then measures the growth every day for three weeks.


Match the following statements below:


A) What is the effect of species on hair growth?


B) Shave patches of her hair and her dog's hair and then measure the growth of hair in those patches with a ruler every day for 3 weeks.


C) The species


D) The length of hair or the amount of growth


E) Size of shaved patch; length of time hair grows


F) The dog might not let her be measured. Different human hairs grow at different rates; this is not accounted for


G) Add a control group; include more subjects, humans and more dogs at the same breed; increase the length of time the experiment is conducted.


Answers...

1) Dependent variable

2) Problem question

3) Independent variable

4) Things to be done to improve this experiment

5) Extraneous variables

6) Ways to perform the experiment

7) Controlled variables