Question

tuesday, jan. 6th:
read each sentence and identify the independent and dependent variable.

1. stella thinks that if people are exposed to ultraviolet light then they are more likely to get skin cancer.

iv: _________________________ dv: _________________________

1. justin believes that the temperature lowering during the fall months is what causes the color of the leaves to change.

iv: _________________________ dv: _________________________

1. suzie wants to know how different colors of light affect the growth of plants.

iv: _________________________ dv:_________________________

1. an entomologist (bug scientist) wants to determine if temperature changes how many times a cricket chirps.

iv: _________________________ dv: _________________________

1. you want to see if playing music makes plants grow taller.

iv: _________________________ dv:_________________________

1. does heating a cup of water allow it to dissolve more sugar?

iv: _________________________ dv: _________________________

Explanation:

1.

The independent variable (IV) is the factor that is manipulated or changed, and the dependent variable (DV) is the factor that is measured or affected. In this sentence, the exposure to ultraviolet light is the manipulated factor, and the likelihood of getting skin cancer is the outcome being measured.

Here, the temperature lowering during fall is the variable that is thought to cause a change, so it's the IV. The change in the color of leaves is the result, so it's the DV.

The different colors of light are what is being varied (IV), and the growth of plants is what is being observed as affected (DV).

Answer:

IV: Exposure to ultraviolet light
DV: Likelihood of getting skin cancer

2.