name variables - 1 directions: read through each question & find the correct answer in one of the 3 columns below. shade in the answer box with the color given & then color the picture on the next page accordingly. *if the color is white, just circle the answer. | # | question | answer choice a | answer choice b | answer choice c | | --- | --- | --- | --- | --- | | 1 | you decide to test whether speeding increases the risk of getting into a car accident. what is your dependent variable? | cars going the speed limit
color yellow | the number of car accidents
color red | cars that are speeding
color white | | 2 | jonathan sets up an experiment to test which brand of dog food his dog likes best. what is his independent variable? | the different brands of dog food
color brown | the amount of food his dog eats
color pink | the color of the dog bowl
color blue | | 3 | lindsay wonders if eating breakfast increases performance in school. she conducts an investigation to find out. which of the following is her independent variable? | eating breakfast
color light green | the performance in school
color black | the time when breakfast is eaten
color gray | | 4 | you do an experiment in class to find out whether exercise affects heart rate. what do you use for your control? | the different types of exercises
color yellow | students exercising
color orange | students not exercising
color pink | | 5 | michael plans to conduct an experiment to determine whether ramp height affects how far a marble will roll. to ensure that his data will be valid, what does he need to do? | use the same size marble for each trial
color purple | use ramps of varying lengths
color brown | complete no more than 1 or 2 trials
color red | | 6 | dianne tested various brands of laundry detergent to see which one removes stains the best. which of the following variables should diane have kept constant during her experiment? | the brand of detergent
color black | the number of stains removed
color brown | the amount of detergent used
color light blue | | 7 | when performing an experiment, what is being measured? | independent variable
color pink | dependent variable
color yellow | control
color green | | 8 | bobby conducts an investigation to determine whether eating a mint during a test will increase test scores. which of the following is bobby’s independent variable? | the test scores
color black | the mint
color orange | the students who do not receive a mint
color purple | | 9 | when you graph the results of an experiment, what goes on the x - axis? | independent variable
color blue | dependent variable
color yellow | control group
color red | | 10 | how many variables should you change when you conduct an experiment? | 1
color light green | 2
color gray | 3
color pink |

Question

Accepted Answer

### Question 1
# Brief Explanations:
The dependent variable is what is being measured or affected. In the experiment about speeding and car accidents, the number of car accidents depends on whether cars are speeding. So the dependent variable is the number of car accidents (Answer Choice B).
# Answer:
B. The number of car accidents

### Question 2
# Brief Explanations:
The independent variable is what is changed or manipulated. In testing which dog food a dog likes, the different brands of dog food are the independent variable (Answer Choice A).
# Answer:
A. The different brands of dog food

### Question 3
# Brief Explanations:
The independent variable is the factor being changed. For the breakfast and school performance experiment, eating breakfast is the independent variable (Answer Choice A).
# Answer:
A. Eating breakfast

### Question 4
# Brief Explanations:
The control group is the group not exposed to the independent variable. For the exercise and heart rate experiment, students not exercising are the control (Answer Choice C).
# Answer:
C. Students not exercising

### Question 5
# Brief Explanations:
To ensure valid data, constants (like using the same marble) are kept. So using the same size marble for each trial is correct (Answer Choice A).
# Answer:
A. Use the same size marble for each trial

### Question 6
# Brief Explanations:
Constants are factors kept the same. In the laundry detergent experiment, the amount of detergent used should be constant (Answer Choice C).
# Answer:
C. The amount of detergent used

### Question 7
# Brief Explanations:
In an experiment, the dependent variable is what is measured. So the answer is the dependent variable (Answer Choice B).
# Answer:
B. Dependent variable

### Question 8
# Brief Explanations:
The independent variable is what is manipulated. For the mint and test scores experiment, the mint is the independent variable (Answer Choice B).
# Answer:
B. The mint

### Question 9
# Brief Explanations:
In a graph, the independent variable is on the x - axis. So the answer is the independent variable (Answer Choice A).
# Answer:
A. Independent variable

### Question 10
# Brief Explanations:
In a controlled experiment, only 1 variable should be changed. So the answer is 1 (Answer Choice A).
# Answer:
A. 1

#	question	answer choice a	answer choice b	answer choice c
2	jonathan sets up an experiment to test which brand of dog food his dog likes best. what is his independent variable?	the different brands of dog food <br> color brown	the amount of food his dog eats <br> color pink	the color of the dog bowl <br> color blue
3	lindsay wonders if eating breakfast increases performance in school. she conducts an investigation to find out. which of the following is her independent variable?	eating breakfast <br> color light green	the performance in school <br> color black	the time when breakfast is eaten <br> color gray
4	you do an experiment in class to find out whether exercise affects heart rate. what do you use for your control?	the different types of exercises <br> color yellow	students exercising <br> color orange	students not exercising <br> color pink
5	michael plans to conduct an experiment to determine whether ramp height affects how far a marble will roll. to ensure that his data will be valid, what does he need to do?	use the same size marble for each trial <br> color purple	use ramps of varying lengths <br> color brown	complete no more than 1 or 2 trials <br> color red
6	dianne tested various brands of laundry detergent to see which one removes stains the best. which of the following variables should diane have kept constant during her experiment?	the brand of detergent <br> color black	the number of stains removed <br> color brown	the amount of detergent used <br> color light blue
7	when performing an experiment, what is being measured?	independent variable <br> color pink	dependent variable <br> color yellow	control <br> color green
8	bobby conducts an investigation to determine whether eating a mint during a test will increase test scores. which of the following is bobby’s independent variable?	the test scores <br> color black	the mint <br> color orange	the students who do not receive a mint <br> color purple
9	when you graph the results of an experiment, what goes on the x - axis?	independent variable <br> color blue	dependent variable <br> color yellow	control group <br> color red
10	how many variables should you change when you conduct an experiment?	1 <br> color light green	2 <br> color gray	3 <br> color pink

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