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Experimental Design
Test Description: Variables in controlled experiments.
Instructions: Answer all questions to get your test result.
1) How many variables are tested at one time in a controlled experiment?
A
One
B
Four
C
Three
D
Two
2) What is the name of the variable changed on purpose in the experiment?
A
dependent variable
B
controlled variable
C
independent variable
D
none of the above
3) What is the name of the variable kept the same in an experiment?
A
independent variable
B
controlled variable
C
dependent variable
D
none of the above
4) What is the name of the variable that is measured in response to the variable changed on purpose?
A
independent variable
B
dependent variable
C
control variables
D
none of the above
5) 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
6) 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
grade on final.
B
There isn't an independent variable.
C
amount of students.
D
amount of time students studied.
7) 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
grade on final.
C
number of students studied.
D
There isn't a dependent variable.
8) 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
Group B
C
Group C
D
There isn't a control group.
9) 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
The height.
C
3 weeks
D
The different types of light.
10) 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
There isn't a dependent variable.
B
The different colored lights.
C
The different heights.
D
The tomato plants.
*select an answer for all questions
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