# Experimental Design Question Preview (ID: 1112)

### Variables In Controlled Experiments. TEACHERS: click here for quick copy question ID numbers.Answers? Play games to get them!

How many variables are tested at one time in a controlled experiment?
a) One
b) Four
c) Three
d) Two

What is the name of the variable changed on purpose in the experiment?
a) independent variable
b) none of the above
c) controlled variable
d) dependent variable

What is the name of the variable kept the same in an experiment?
a) independent variable
b) none of the above
c) controlled variable
d) dependent variable

What is the name of the variable that is measured in response to the variable changed on purpose?
a) independent variable
b) none of the above
c) control variables
d) dependent variable

What is the name of the group with normal conditions in a controlled experiment?
a) experimental group
b) none of the above.
c) variable group
d) control group

Mrs. Bauer wanted to investigate whether the amount of time students studied for the test would affect their grade on final. What is the independent variable in the experiment?
a) amount of time students studied.
b) There isn't an independent variable.
c) amount of students.

Mrs. Bauer wanted to investigate whether the amount of time students studied for the test would affect their grade on final. What is the dependent variable in the experiment?
a) amount of time students studied.
b) There isn't a dependent variable.
c) number of students studied.

Mrs. Bauer had 3 groups of 25 kids. Group A did not study for the final. Group B studied for 5 hours. Group C studied for 10 hours. Which group is the control group?
a) Group A
b) There isn't a control group.
c) Group C
d) Group B

What is the independent variable? Diana placed three tomato plants (A,B, C) under three different types of light. She measured the height of each plant after 3 weeks.
a) The tomato plants.
b) 3 weeks
c) The height.
d) The different types of light.

What is the dependent variable in the experiment? Diana placed three tomato plants (A,B, C) under three different types of light. She measured the height of each plant after 3 weeks.
a) The tomato plants.
b) There isn't a dependent variable.
c) The different heights.
d) The different colored lights.

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