Unit 1.1 The Science of Biology

The part of the experiment that you change or manipulate is called the

• control group

• dependent varabiable

• independent variable

• constant variable

The part of the experiment that you measure is called the

• control group

• depdendent variable

• independent variable

• constant variable

Misty designs an experiment to test the effects of shampoo on hair growth. She has four friends use the shampoo for a week and measures the length of their hair. In this experiment, what is the dependent variable?

• shampoo use

• length of hair

• number of friends

• how often they wash their hair

Misty designs an experiment to test the effects of shampoo on hair growth. She has four friends use the shampoo for a week and measures the length of their hair. In this experiment, what is the independent variable?

• shampoo use

• length of hair

• number of friends

• how often they wash their hair

Misty designs an experiment to test the effects of shampoo on hair growth. She has four friends use the shampoo for a week and measures the length of their hair. In this experiment, what would be a constant variable?

• shampoo use

• length of hair

• number of friends

• how often they wash their hair

Misty designs an experiment to test the effects of shampoo on hair growth. She has four friends use the shampoo for a week and measures the length of their hair. In this experiment, what would be a control group?

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Misty designs an experiment to test the effects of shampoo on hair growth. She has four friends use the shampoo for a week and measures the length of their hair. There are ____ experimental groups.

Would you rather fight 10 duck-sized horses, or 1 horse-sized duck?

• 10 duck-sized horses

• 1 horse-sized duck

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An hypothesis is

• An idea that others agree with

• A statement of fact

• a statement which can be tested

• a statement that explains a theory