Question

Suzie wants to know how different colors of light affect the growth of plants. She believes that plants
can survive the best in white light. She buys 5 ferns of the same species, which are all approximately
the same age and height. She places one in white light, one in blue light, one in green light, one in red
light and one in the closet. After the 2 weeks, Suzie observes the plants and measures their heights. What is the control group, independent variable, dependent variable, and the constant(s)?

Answer 1

Answer:

growth of plants. She believes that plants

can survive the best in white light. She buys 5 ferns of the same species, which are all approximately

the same age and height. She places one in white light, one in blue light, one in green light

Explanation:

After the 2 weeks, Suzie observes the plants and measures their heights.

Answer 2

Answer:

Control group: The fern in the closet.

Independent Variable: The 5 ferns.

Dependent Variable: The different colors of lights and the closet.

Constant: The 2 weeks the ferns were affected by the lights/closet.

Explanation:

Control group is the one not given the special treatment in the experiment(in this case, the special treatment is the different lights).

Independent Variable is the thing(s) being affected in the experiment.

Dependent Variable is what's affecting the independent variable.

Constant is the quantity not being changed (in this case, the 2 weeks).