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Scientific Variables
Test Description: Practice with Scientific Variables
Instructions: Answer all questions to get your test result.
1) Identify the independent variable in the problem listed: How does the distance from an eye chart affect the number of letters that are recognized?
A
person taking the test
B
number of letters recognized
C
distance from eye chart
D
the eye chart
2) Identify the dependent variable in the problem listed: How does the distance from an eye chart affect the number of letters that are recognized?
A
distance from eye chart
B
person taking the test
C
number of letters recognized
D
the eye chart
3) Identify a constant needed in this problem: How does the size of a bicycle tire affect the distance it will travel when it is pedaled a set number of times?
A
the distancde traveled
B
the size of bicycle tire
C
the bicycle
4) Identify the independent variable in this problem: How does the size of a bicycle tire affect the distance it will travel when it is pedaled a set number of times?
A
size of tire
B
the bike
C
distance the bike travels
5) Identify the dependent variable in this problem: Will apple trees receiving the most water produce the sweetest apples?
A
amount of water
B
sweetness of the apples
C
location of the trees
6) An experiment was done with six groups of children to see if scores on their weekly spelling tests were affected by the number of minutes of spelling practice they had each day. What is the independent variable?
A
scores on the weekly spelling test
B
number of minutes of spelling practice
C
six groups of students
7) An investigation was done to see if more bushels of potatoes would be produced if the soil was fertilized more. What is one constant needed?
A
amount of potatoes grown
B
amount of fertilizer used
C
type of potato planted
8) In this problem what is the dependent variable: Does the size of a soccer ball affect how easy it is to juggle?
A
size of soccer ball
B
person juggling
C
how easy it is to juggle the soccer ball
9) Identify the independent variable in this question: How does the length of string affect the number of times a pendulum will swing back and forth?
A
number of times pendulum swings back and forth
B
the pendulum
C
the person conducting the experiment
D
length of string
10) Identify the independent variable in this problem: How does the amount of oxygen in the water affect the oyster population?
A
location
B
amount of oxygen in the water
C
oyster population
11) A student wanted to find out which brand of paper towel absorbed the most water. What is the dependent variable?
A
brand of paper towel
B
size of paper towel
C
amount of water
12) In the following hypothesis, identify the independent variable: If the temperature of water is higher, then the faster an egg will boil.
A
time it takes an egg to boil
B
amount of water
C
the size of the egg
D
temperature of water
13) Identify a constant needed in the following experiment: If a ball is dropped from a higher height, then the ball will bounce higher.
A
the bounce
B
the ball
C
the height
*select an answer for all questions
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