Unit 1 Quiz Review

The variable being changed

• independent variable

• dependent variable

• controlled variable

• experienced variable

The variable being measured or tested

• independent variable

• dependent variable

• controlled variable

• experienced variable

The variable that remains the same

• independent variable

• dependent variable

• controlled variable

• experienced variable

The group that has the variable unchanged or non-existent.

• control group

• experimental group

The group that has the variable changed.

• control group

• experimental group

A solution to a scientific problem that is tentative, testable, and falsifiable.

• hypothesis

• method

• experiment

• procedure

Three redwood trees are kept at different humidity levels inside a greenhouse for 12 weeks. One tree is left outside in normal conditions. The heights of the trees are measured once a week. What is the independent variable in the experiment above?

• the heights of the trees

• the redwood trees

• different humidity levels

• normal conditions

Three redwood trees are kept at different humidity levels inside a greenhouse for 12 weeks. One tree is left outside in normal conditions. The heights of the trees are measured once a week. What is the dependent variable in the experiment above?

• the heights of the trees

• the redwood trees

• different humidity levels

• normal conditions

Three redwood trees are kept at different humidity levels inside a greenhouse for 12 weeks. One tree is left outside in normal conditions. The heights of the trees are measured once a week. What is the controlled variable in the experiment above?

• the types of trees

• one tree left outside

• normal conditions

Three redwood trees are kept at different humidity levels inside a greenhouse for 12 weeks. One tree is left outside in normal conditions. The heights of the trees are measured once a week. What is the control group in the experiment above?

• the types of trees

• one tree left outside in normal conditions

• normal conditions

• the three trees in the greenhouse