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Scientific Method And Variables
Test Description: Sci. method steps and defining variables.
Instructions: Answer all questions to get your test result.
1) The hypothesis in a scientific investigation is
A
an educated guess about the outcome of the experiment.
B
always right.
C
the last part of the experiment.
D
a list of procedures.
2) In an experiment, there should be only one _________. Everything else should be a ________.
A
independent variable.......constant variable.
B
constant variable.........independent variable.
3) Cause is to effect as _____ is to _____
A
independent... dependent
B
independent... constant
C
dependent... independent
D
constant... responding
4) Which is the first step in the scientific method?
A
ask a question
B
draw a conclusion
C
analyze data
D
form a hypothesis
5) The independent variable is also called the
A
responding variable
B
constant variable
C
conclusion
D
manipulated variable
6) Which variable is affected by the independent variable?
A
responding variable (dependent)
B
manipulated variable (independent)
C
constant variable
7) A farmer applies different fertilizer to his plants to see which will make the plants grow the highest. What is the independent variable?
A
amount of water
B
height of plants
C
type of fertilizer
D
different plants
8) A farmer applies different fertilizer to his plants to see which will make the plants grow the highest. What is the dependent variable?
A
amount of water
B
different plants
C
height of plants
D
type of fertilizer
9) In a study about headaches, doctors gave patients Aleve, Tylenol, and Advil to see which medication would relieve the headache pain the fastest. The doctors timed how long it took the medication to work. What is the Independent variable?
A
Amount of medication
B
Amount of time until pain was relieved
C
Number of headaches
D
Types of pain reliever
10) In a study about headaches, doctors gave patients Aleve, Tylenol, and Advil to see which medication would relieve the headache pain the fastest. The doctors timed how long it took the medication to work. What is the Dependent variable?
A
Types of pain reliever
B
Amount of time until pain was relieved
C
Number of headaches
D
Amount of medication
11) The independent variable is the variable that you change.
A
False
B
True
12) The dependent variable is the one you measure.
A
True
B
False
13) How many independent variables can you have in an experiment so that your investigation is valid?
A
Three
B
As many as you want!
C
One
D
Two
14) The variables or factors in an experiment that must stay the same.
A
Dependent Variable
B
Independent Variable
C
Constant Variables
*select an answer for all questions
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