Question

1. bacterial growth may be affected by temperature. manipulated variable: ______ responding variable: ____ formal hypothesis: ____ 5. ultraviolet light may cause skin cancer. manipulated variable: ____ responding variable: ____ formal hypothesis: ____ 6. temperature may cause leaves to change color. manipulated variable: ____ responding variable: ____ formal hypothesis: ______

Explanation:

Step1: Identify variables

Manipulated variable is what is changed; responding variable is what is measured.

Step2: Formulate hypotheses

Based on variable - relationship.

Answer:

1. Manipulated variable: Temperature; Responding variable: Bacterial growth; Formal hypothesis: If temperature changes, then bacterial growth will be affected.
2. Manipulated variable: Ultraviolet light; Responding variable: Skin cancer; Formal hypothesis: If ultraviolet light exposure occurs, then skin cancer may develop.
3. Manipulated variable: Temperature; Responding variable: Color - change of leaves; Formal hypothesis: If temperature changes, then leaves will change color.