Science quiz graphing study

Hypothesis

A testable prediction, often implied by a theory

Susie Q wants to know the effect of different colors of light on the growth of plants. She believes that plants can survive 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. All of the ferns are planted in Miracle-Grow and given 20mL of water once a day for 2 weeks. After the two weeks, Susie observes the plants and makes measurements. What is the control group, and what is the experimental group?

Control group: closet/no light Experimental group: different colors of light

Expiramental group

Group that receives expiramental treatment

Susie Q wants to know the effect of different colors of light on the growth of plants. She believes that plants can survive 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. All of the ferns are planted in Miracle-Grow and given 20mL of water once a day for 2 weeks. After the two weeks, Susie observes the plants and makes measurements. What types of measurements can Susie make on the plants to determine how they did in different types of light?

Height in cm

Susie Q wants to know the effect of different colors of light on the growth of plants. She believes that plants can survive 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. All of the ferns are planted in Miracle-Grow and given 20mL of water once a day for 2 weeks. After the two weeks, Susie observes the plants and makes measurements. What is the hypothesis?

If plants are in white light, then they will grow the tallest

Susie Q wants to know the effect of different colors of light on the growth of plants. She believes that plants can survive 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. All of the ferns are planted in Miracle-Grow and given 20mL of water once a day for 2 weeks. After the two weeks, Susie observes the plants and makes measurements. What are the Independent and Dependent variables?

Independent: type of light Dependent: height of fern

Susie Q wants to know the effect of different colors of light on the growth of plants. She believes that plants can survive 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. All of the ferns are planted in Miracle-Grow and given 20mL of water once a day for 2 weeks. After the two weeks, Susie observes the plants and makes measurements. What are the constants?

Miracle-Grow, 20mL of water once a day, 2 weeks

dependent variable

The measurable effect, outcome, or response in which the research is interested.

Variables

factors that can change in an experiment

indepent variable

the experimental factor that is manipulated

Constants

the factors in an experiment that remain the same

Control group

the group that does not receive the experimental treatment.

Trials

the number of times an experiment is repeated