Question

1. the independent variable is the ______ a) light intensity b) number of bubbles c) distance of the light
2. the dependent variable is the ______ a) light intensity b) number of bubbles c) distance of the light

experiment 3: how does the color of light affect photosynthesis
light color: reset the simulation and run tests for the different colors of light. use 100w bulbs at a distance of 50 cm. record your results in data table 2.
data table 2

	clear	red	green	blue

Explanation:

1. The independent variable is what the experimenter intentionally changes. In photosynthesis experiments testing light effects, distance of the light is manipulated to alter intensity, making it the independent variable here.
2. The dependent variable is what is measured to observe changes from the independent variable. The number of bubbles (oxygen produced) reflects the rate of photosynthesis, so it is the dependent variable.

Answer:

1. c) distance of the light
2. b) number of bubbles