WorksheetsVariables
Total questions: 166
Worksheet time: 3hrs 12mins
The ___ variable is what changes in an experiment.
Controlled
Independent
Dependent
All variables in an experiment must be changed.
True
False
A ____ variable remains constant, or does not change.
Controlled
Independent
Dependent
A study was done to find if different tire treads affect the braking of a car. What is the independent variable?
Car
Brakes
Tire treads
Seat belts
Lemon trees receiving the most water produced the most lemons. What is the dependent variable?
Amount of water
Growth of the lemon tree
How many lemons were produced
Amount of sunlight
The height of bean plants depend on the amount of water they received. What is the independent variable?
Amount of water
Height of the plants
How many beans were produced
Temperature the plants were in
The higher the temperature of air in the oven, the faster a cake will bake. Which is a controlled variable?
Type of oven used
Type of cake used
The temperature
Time for cake to bake
The dependent variable depends on the controlled variables.
True
False
The ____ variable is what is observed during the experiment.
Independent
Dependent
Controlled
The temperature of water was measured at different depths in a pond. The temperature of water is the dependent variable.
True
False
Which variable do you change for a scientific investigation?
Dependent variable
Independent variable
Controlled variable
Varying variable
Which variable reacts to what you change in a scientific investigation?
Dependent variable
Independent variable
Controlled variable
a varying variable
What is a hypothesis?
the right answer in an experiment
the wrong answer in an experiment
an educated guess; what you think will happen
A really energetic paper
What is the independent variable in this experiment?
Will a person wake up earlier if they drink water?
the person
the time it takes for a person to wake up
the water
none of these
What is the dependent variable in this experiment?
Does the type of pen determine how fast you write?
the type of pen
how fast you write
the person writing
none of these
What is the independent variable in the experiment?
Mr. Block wants to see which treat causes her cat, Whiskers, to jump the highest.
the type of treat
how high Whiskers jumps
the type of cat
Mr. Block
Why do we only test one variable at a time?
It is too much work to use more than one variable
It is how it's always been done
We want to know what is causing the change that occurs
There is no reason
Generally, how many times should each trial in an experiment be repeated?
1
2
3
5
When testing your ability to jump different distances, which of the following could be the controlled variable?
the length of the jump
the size of your muscles
the time of day you train
none of these
In an experiment where you see how the height of a roller coaster track affects the speed of a roller coaster, the type of roller coaster is what type of variable?
dependent variable
independent variable
controlled variable
none of these
This variable is the one thing that changed on purpose...
Dependent Variable
Control
Independent Variable
What is the DEPENDENT variable (effect) in this experiment?
"Does eating breakfast improve test scores?"
eating breakfast or not
the grade you got on the test
what time you get up in the morning
how tasty the breakfast is
You are testing how the amount you water a plant affects its growth. What would be the INDEPENDENT VARIABLE in this experiment.
They type of pot you put the plants in.
The amount you water each plant.
The amount of sunlight the plants get.
The amount the plant grows.
Mr. Pransky wants to see how different surfaces affect how high a tennis ball can bounce. What is the independent variable?
the different surfaces
using the same ball
how high they bounce
A student wants to test the hypothesis of "If salt is added to water then the boiling point of water will decrease (go down)." What is the independent variable?
Whether salt is added or not
Boiling Point
Amount of water
If you were testing the time it took for objects of different sizes to reach the ground after being dropped from 30 feet in the air, which of these would be the DEPENDENT VARIABLE?
The time it takes for each object to hit the ground.
The size of each object.
The type of object you use.
The height you drop the object from
Why do we use graphs in science?
to record and display data
to show trends in data
to predict what will happen if we extend the experiment
all of these are correct
Sadie is testing how the age of a seed affects how fast plants grow. Look at the picture to see if you can figure out what makes her experiment unfair. Mark all that apply.
She used different types of seeds/plants.
The plants are in different pots.
She did not plant very many plants.
Seed age might not make a difference.
What is the manipulated variable?
what we are changing or testing
what we are observing or measuring
what we keep the same to make the experiment fair
What is the responding variable?
what we are changing or testing
what we are observing or measuring
what we are keeping the same to make the experiment fair
What are the constant variables?
what we are changing or testing
what we are observing or measuring
what we keep the same to make the experiment fair
Scientific Question: Does being tardy impact test scores?
What is the manipulated variable?
test scores
the time a student arrives to class
amount of time to complete test
Scientific Question: Does being tardy impact test scores?
What is the responding variable?
test scores
the time a student arrives to class
amount of time to complete test
Scientific Question: Does being tardy impact test scores?
What is one of the constant variables?
test scores
the time a student arrives to class
amount of time to complete test
Scientific Question: Will a person fall asleep faster if they listen to music?
What is the manipulated variable?
music
time to fall asleep
person
Scientific Question: Will a person fall asleep faster if they listen to music?
What is the responding variable variable?
music
time to fall asleep
person
What is the control variable?
Jamal is trying to perfect his basketball shots. He thinks getting closer to the basketball hoop before throwing the ball will help him score more points. In this situation, what is the manipulated variable?
How close Jamal gets to the hoop
How high Jamal jumps when he shoots
How many points he scores
How hard he throws the ball
In a study to determine whether how long a student sleeps affects test scores, the independent variable is _________________________________.
the test scores
the amount of sleep
You want to know which brand of fertilizer is best for your plants. What is the independent variable?
the fertilizer
the health of your plants
You want to compare brands of paper towels, to see which holds the most liquid. Which is the independent variable?
the brand of paper towel
the amount of water
You suspect the amount of television a person watches is related to their age. What is the independent variable?
age
the amount of tv time
You think rising sea temperatures might affect the amount of algae in the water.
What is the independent variable?
the water temp
the amount of algae
You want to know which brand of microwave popcorn pops the best.
What is the independent variable?
brand of popcorn
number of kernels popped
In a study to determine whether how long a student sleeps affects test scores, the dependent variable is ______________.
the test score
the amount of sleep
You want to know which brand of fertilizer is best for your plants.What is the dependent variable ________________.
The health of the plants
the type of fertilizer
You want to compare brands of paper towels, to see which holds the most liquid. Which is the dependent variable?
the brand of paper towel
the amount of water
You suspect the amount of television a person watches is related to their age. What is the dependent variable?
age
the amount of tv time
You think rising sea temperatures might affect the amount of algae in the water.
What is the dependent variable?
water temp
amount of algae
You want to know which brand of microwave popcorn pops the best.
What is the dependent variable?
brand of popcorn
the amount of kernels popped
The information you collect in an experiment in order to answer a question is called
Charts
Graphs
Data
Hypotheses
This type of variable is what you DON'T change in a lab
Control
Independent
Dependent
A graph can be described as all of the following EXCEPT:
A tool to be interpreted only by trained scientists and mathematicians
A good way to describe the relationship between to variables
A mathematical design
A model
A variable that is unchanged throughout the experiment is the:
Controlled Variable
Experimental Variable
Independent Variable
Dependent Variable
The independent Variable in a lab can be described as the variable:
Represented on the X Axis
Causing the change in the dependent Variable
Over which a scientists usually has direct control when designing an experiement
All of the above
The independent Variable is found on the:
X Axis
Y Axis
The dependent Variable is found on the:
X Axis
Y Axis
The independent Variable is:
What you keep the same in the experiment
What you change in an experiment
What you measure in an experiment
Jack is doing an experiment to see which shoes help him run the fastest. What will his independent variable be?
The shoes he wears
The track he runs on
The time of day he runs
Sally is doing an experiment to see which brand of sunscreen works best. What is not a controlled variable for this experiment?
The time of day she is in the sun
The amount of time she is in the sun
The amount of sunscreen she uses.
The brand of sunscreen.
The variable that is being tested, counted or measured and is responding to the independent variable is known as:
Control
Independent Variable
Constant
Dependent Variable
Which brand of paper towel will absorb the most liquid? What is the dependent variable?
brand of paper towel
amount of water absorbed
Zach wants to know if the amount of time he spends on social media has an effect on his grades. What is the independent variable?
Time on social media
His grades
Maddie wants to determine if the weight of the dog determines the number of puppies in a litter. What is the dependent variable?
type of dog
number of puppies
Beth wants to know if increasing her exercise will decrease the time it takes her to run a mile. What is the independent variable?
Distance
amount of exercise
Brad sets up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. Identify the independent variable.
distance traveled by the ball
mass of the ball
height of the ramp
weight of the ball
Mr. Pransky wants to see how different surfaces affect how high a tennis ball can bounce. What is the independent variable?
the different surfaces
how high they bounce
Carey and Justin are raising money to purchase books for the library. The more money they raise, the more books they will be able to purchase for the library.
Which of the variables is dependent?
amount of money raised
number of books
One chicken is injected with a growth hormone while another chicken is not injected with a growth hormone. After one year, both chickens are weighed. What is the independent variable?
If a chicken was injected with a growth hormone or not
The weight of the chicken
The type of chicken
One chicken is injected with a growth hormone while another chicken is not injected with a growth hormone. After one year, both chickens are weighed. What is the dependent variable?
If the chicken was injected with a growth hormone or not
The weight of the chicken
The type of chicken
A bug repellent was sprayed on one arm. On the other arm, the bug repellent was not sprayed. After 2 hours, the number of bug bites are recorded. What is the independent variable?
The type of bug repellent
If an arm was sprayed with bug repellent or not
The number of bug bites
A bug repellent was sprayed on one arm. On the other arm, the bug repellent was not sprayed. After 2 hours, the number of bug bites are recorded. What is the dependent variable?
The type of bug repellent
If an arm was sprayed with bug repellent or not
The number of bug bites
Javier and his twin sister both have the same science exam. Javier sleeps for 9 hours the night before the exam and his sister sleeps for 6 hours. After they take the test, they both compare their test grades. What is the independent variable?
The number of hours of sleep they had
The type of test
The test grades
Javier and his twin sister both have the same science exam. Javier sleeps for 9 hours the night before the exam and his sister sleeps for 6 hours. After they take the test, they both compare their test grades. What is the dependent variable?
The test grades
The number of hours of sleep they had
The type of test
Group A decides to exercise for a month. Group B decides not to exercise during the same month. Afterwards, they measure the amount of weight that each group lost. what is the independent variable?
How much weight each group lost
The type of exercise
If group exercises or not
Group A decides to exercise for a month. Group B decides not to exercise during the same month. Afterwards, they measure the amount of weight that each group lost. what is the dependent variable?
If a group exercises or not
How much weight each group lost
The type of exercise
One math class studies for an upcoming test while another math class does not study for the same test. The test scores of the two classes are compared afterwards. What is the independent variable?
The test scores
If a class studies or not
The type of class
One math class studies for an upcoming test while another math class does not study for the same test. The test scores of the two classes are compared afterwards. What is the dependent variable?
If a class studies or not
The type of class
The test scores
One plant is given sunlight every day. Another plant of the same type is not given any sunlight. After 3 weeks, the height of each plant is measured. What is the independent variable?
The type of plant
If a plant receives sunlight or not
How tall the plants are
One plant is given sunlight every day. Another plant of the same type is not given any sunlight. After 3 weeks, the height of each plant is measured. What is the dependent variable?
How tall the plants are
The type of plant
If a plant receives sunlight or not
One plant is given sunlight for 12 hours each day. Another plant of the same type is not given any sunlight. After 3 weeks, the plants are compared to see how green each one looks. What is the independent variable?
How much sunlight each plant receives
How green each plant looks
The type of sunlight
One plant is given sunlight for 12 hours each day. Another plant of the same type is not given any sunlight. After 3 weeks, the plants are compared to see how green each one looks. What is the dependent variable?
The type of sunlight
How much sunlight each plant receives
How green each plant looks
The one factor that a scientist changes during an experiment. (It affects the results of the experiment).
Controlled Variable
Dependent Variable
Independent Variable
The variable that is measured. It is the result of the experiment.
Controlled Variable
Dependent Variable
Independent Variable
The factors that stay the same throughout the experiment.
Constant
Dependent Variable
Independent Variable
Why is it important to have only one independent variable and to control the other variables when performing science experiments?
So you can tell which factor is causing the change in the experiment and get more accurate results
It does not matter, you can have as many independent variables as you want.
None of these answers are correct
Ben makes five paper helicopters with different wing lengths. He drops them the same way from a height of two meters for five trials each. He records the amount of time it takes for each helicopter to fall to the ground.
What is the independent variable?
Dropping the same way
Wing Length
Amount of time it takes the helicopter to hit the floor
Dropping from the same height
Ben makes five paper helicopters with different wing lengths. He drops them the same way from a height of two meters for five trials each. He records the amount of time it takes for each helicopter to fall to the ground.
What is the dependent variable?
Dropping the same way
Wing Length
Amount of time it takes the helicopter to hit the floor
Dropping from the same height
Ben makes five paper helicopters with different wing lengths. He drops them the same way from a height of two meters for five trials each. He records the amount of time it takes for each helicopter to fall to the ground.
What are two CONSTANTS? (Select 2 answers)
Dropping the same way
Wing Length
Amount of time it takes the helicopter to hit the floor
Dropping from the same height
Cindy wanted to find out how the amount of sunlight affects the growth of plants. She placed two tomato plants in 10 inch pots with potting soil and watered them ¼ cup each day. One plant was placed under a cardboard box and one was placed in the sunlight. She measured the growth of the plant each week for three weeks.
What is the independent variable?
Using the same type of plant
Each plant was placed in a 10 inch pot
The growth of the plant
One plant is in the sunlight and the other is under a box
Cindy wanted to find out how the amount of sunlight affects the growth of plants. She placed two tomato plants in 10 inch pots with potting soil and watered them ¼ cup each day. One plant was placed under a cardboard box and one was placed in the sunlight. She measured the growth of the plant each week for three weeks.
What is the dependent variable?
Using the same type of plant
Each plant was placed in a 10 inch pot
The growth of the plant
One plant is in the sunlight and the other is under a box
Cindy wanted to find out how the amount of sunlight affects the growth of plants. She placed two tomato plants in 10 inch pots with potting soil and watered them ¼ cup each day. One plant was placed under a cardboard box and one was placed in the sunlight. She measured the growth of the plant each week for three weeks.
What are two CONSTANTS? (Select 2)
Using the same type of plant
Each plant was placed in a 10 inch pot
The growth of the plant
One plant is in the sunlight and the other is under a box
True of False
The dependent variable is responsive to the independent variable.
True
False
The one factor that a scientist changes during an experiment. (It affects the results of the experiment).
Controlled Variable
Dependent Variable
Independent Variable
The variable that is measured. It is the result of the experiment.
Controlled Variable
Dependent Variable
Independent Variable
The factors that stay the same throughout the experiment.
Constant
Dependent Variable
Independent Variable
The one factor that a scientist changes during an experiment.
Controlled Variable
Dependent Variable
Independent Variable
The factors that stay the same or are constant throughout the experiment.
Controlled Variable
Dependent Variable
Independent Variable
Why is it important to have only one independent variable and to control the other variables when performing science experiments?
So you can tell which factor is causing the change in the experiment.
It does not matter, you can have as many independent variables as you want.
Is the underlined phrase the independent variable or the dependent variable?
Does the flavor of ice cream effect how fast the ice cream melts?
Independent Variable
Dependent Variable
Is the underlined phrase the independent variable or the dependent variable?
How does watching TV during studying affect a student’s test grades?
Independent Variable
Dependent Variable
Is the underlined phrase the independent variable or the dependent variable?
Which brand of bubblegum allows for you to blow the largest bubble?
Independent Variable
Dependent Variable
Is the underlined phrase the independent variable or the dependent variable?
Does deflating a ball affect a its ability to bounce?
Independent Variable
Dependent Variable
Is the underlined phrase the independent variable or the dependent variable?
Will a person’s teeth will be whitened quicker if they use baking soda with their toothpaste?
Independent Variable
Dependent Variable
Is the underlined phrase the independent variable or the dependent variable?
Does the type of shoe worn during a 30 meter dash affect the speed of the runner?
Independent Variable
Dependent Variable
Is the underlined phrase the independent variable or the dependent variable?
Will a student’s performance in school will be affected if they do not eat breakfast?
Independent Variable
Dependent Variable
You want to test which size of soccer ball is easiest to juggle with your feet. You test a size 3, size 4 and a size 5 ball. You count the seconds the ball stays in the air for each of the trials.
What is the independent variable?
the size of the soccer ball
The seconds the ball stays in the air
You want to test which size of soccer ball is easiest to juggle with your feet. You test a size 3, size 4 and a size 5 ball. You count the seconds the ball stays in the air for each of the trials.
What is the dependent variable?
the size of the soccer ball
the seconds the ball stays in the air
Does the size of a fish tank affect how large a fish will grow?
What is the dependent variable?
how large the fish will grow
the size of the fish tank
Does the size of a fish tank affect how large a fish will grow?
What is the independent variable?
how large the fish will grow
the size of the fish tank
Is the underlined phrase the independent variable or the dependent variable?
Does the lack of sleep make you gain weight?
independent variable
dependent variable
The variable that you observe and measure is the ______________.
independent variable
dependent variable
The one thing that you can change or manipulate in an experiment is called the ______________.
independent variable
dependent variable
Two groups of students were tested to compare their speed working math problems. Each group was given the same problems. One group used calculators and the other group computed without calculators.
What is the independent variable?
speed of students working math problems
the use of calculators
Marcel and his twin sister Marley both have the same science exam. Javier sleeps for 9 hours the night before the exam and his sister sleeps for 6 hours. After they take the test, they both compare their test grades. What is the independent variable?
The number of hours of sleep they had
The type of test
The test grades
One math class studies for an upcoming test while another math class does not study for the same test. The test scores of the two classes are compared afterwards. What is the independent variable?
The test scores
If a class studies or not
The type of class
Caleb wants to know: Does the type of gasoline put in a car effect how fast the car can drive?
What is the independent variable?
Type of gasoline
which car the gas is put into
how fast the car can drive
how much gas is put into the car
Does the flavor of ice cream effect how fast the ice cream melts? The flavor of ice cream is the....
independent variable
dependent variable
What effect does decreasing the temperature of a room have on a lifespan of a battery? The temperature of the room is the...
independent variable
dependent variable
