F Chapter 2 Part 1 Independent and Dependent Variables

Multiple Choice

On a graph, which axis shows the dependent variable?

• x-axis
• y-axis
• neither
• it changes

Multiple Choice

On a graph, which axis shows the independent variable?

• x-axis
• y-axis
• neither
• it changes

Multiple Choice

The x- axis is the ___________________ number line in the coordinate plane.

• Vertical

• Diagonal

• Horizontal

• origin

Multiple Choice

A(n) _____________ variable depends on or is changed by another variable.

• dependent
• independent

Multiple Choice

The y- axis is the ___________________ number line in the coordinate plane.

• Vertical

• Diagonal

• Horizontal

• origin

Multiple Choice

Name the INDEPENDENT variable from the table below.

• words
• minutes

Multiple Choice

In the table, Bubbles is the ______________.

• independent variable

• dependent variable

Multiple Choice

Sarah is bringing treats to her elementary school class on her birthday. The number of treats she brings in is based on the number of students in her class.

t = the number of treats

s = the number of students

Which of the variables is INDEPENDENT?

• s

• t

Multiple Choice

Sophie earned $5 for every A she got on her report card.

m = money

A = A on report card

The dependent variable is:

• m = money

• A = A on report card

Multiple Choice

Which of the following is the label for the independent variable.

• Money Collected

• Raising Money

• Boxes Sold

• None of the above

Multiple Choice

Independent means

• an amount that can stand on its own
• an amount that depends on another amount

Multiple Choice

Which label best describes the dependent quantities shown in the table?

• Number of tickets (t)
• Cost (c)

Multiple Choice

Which label best describes the independent quantities shown in the table?

• Number of tickets (t)
• Cost (c)

Multiple Choice

• the independent variable is distance
• the independent variable is d=25 t
• the dependent variable is time
• the dependent variable is distance

Multiple Choice

If I drink a lot of water then I will have to go to the bathroom.

What is the red part?

• Independent variable

• dependent variable

Multiple Choice

If I drink a lot of water then I will have to go to the bathroom.

What is the red part?

• independent variable

• dependent variable

Multiple Choice

Jimmy earned $8 for every pizza he delivers.

m = money (dollars)

p = number of pizzas delivered

The dependent variable is:

• m = money

• p = number of pizzas delivered

Multiple Choice

Emma gets one sticker for every paper she completes.

s = stickers earned

p = papers completed

The independent variable is:

• s = stickers earned

• p = papers completed

Multiple Choice

Ms. Shi is making a scrapbook. As she adds more photos, the scrapbook grows thicker.

p = the number of photos added

t = the thickness of the scrapbook

• t is the independent variable and p is the dependent variable

• p is the independent variable and t is the dependent variable

Multiple Choice

Sam wanted to know if the color of the chair you sat in when taking a test affected your test grade. What is the independent variable.

• Color or chair
• Grade on test
• Age of students

Variables

By Paul Jordan

Multiple Choice

Which is one is the variable that you change in an experiment?

• Independent

• Dependent

• Constant

• Control

Multiple Choice

Which variable is what changes because of what you manipulated in the experiment?

• Independent

• Dependent

• Constant

• Control

Multiple Select

I am experimenting with how water effects the growth of a bean plant. Select all that need to remain constant

• Sunlight

• Type of Soil

• Temperature

• Amount of water

Multiple Choice

What is the "control" in the experiment?

• The variable I change

• The variable I observe or measure.

• Something in the experiment that must remain constant.

• A similar test with typical factors to compare the experiment to.

Multiple Choice

Select the variable described.

Melinda will use different light on plants in her experiment.

• Independent

• Dependent

• Control

• Constant

Multiple Choice

The gas mileage went from 30 mpg to 28 mpg with different gasoline.

• Independent

• Dependent

• Control

• Constant

Multiple Choice

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

Multiple Choice

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

Multiple Choice

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

Multiple Choice

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

Multiple Choice

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

Multiple Choice

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

Multiple Choice

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

Multiple Choice

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

Multiple Choice

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

Multiple Choice

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

Multiple Choice

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

Multiple Choice

Is the underlined phrase the independent variable or the dependent variable?

Does the lack of sleep make you gain weight?

• independent variable

• dependent variable

Multiple Choice

The variable that you observe and measure is the ______________.

• independent variable

• dependent variable

Multiple Choice

The one thing that you can change or manipulate in an experiment is called the ______________.

• independent variable

• dependent variable

Multiple Choice

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

Multiple Choice

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

Multiple Choice

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

Multiple Choice

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

Multiple Choice

Does the flavor of ice cream effect how fast the ice cream melts? The flavor of ice cream is the....

• independent variable

• dependent variable

Multiple Choice

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

VARIABLES

something that is able to be changed or adapted

Independent Variables

what you change in a scientific experiment

Example

• Are students who are involved in school sports more likely to have a higher grade point average?

• The independent variable would be whether or not students are involved in school sports. Because that is what we can change.

Dependent variable

what changes because of the independent variable, what you are trying to figure out or understand

often the result of the experiment

Example

• Are students who are involved in school sports more likely to have a higher grade point average?

• The dependent variable would be the grade point average of the students who participated in the experiment.

• The dependent variable should be measureable or observeable.

Try to identify the independent and dependent variables in the following examples.

Multiple Choice

What is the independent variable in the question below?

Will hair have more shine if conditioneer is used before or after shampooing?

• Shininess of hair

• When the hair is conditioned

Multiple Choice

What is the dependent variable in the question below?

Are children who learn to read before kindergarten more likely to attend college?

• when students learn to read

• likeliness to attend college

• what students read

Multiple Choice

What is the dependent variable in the question below?

Are fisherment who use live bate more likely to catch a fish than fisherman who use artificial (fake) bait?

• likeliness of catching fish

• what bait is used

Multiple Choice

What is the independent variable in the question below?

When students bring a packed lunch to school do they consume fewer calories?

• Whether or not students bring a packed lunch or eat a school lunch

• how many calories students consume

Multiple Choice

What is the independint variable in the question below?

Do movie goers eat more popcorn during comedies or dramas?

• the amount of popcorn eaten during the movie

• which movie is seen

Multiple Choice

How does the amount of sunlight affect how many tulip flowers a plant grows? The sunlight is the...

• independent variable

• dependent variable

Multiple Choice

How does adding cardio to one’s daily schedule affect their heart rate? The heart rate is the...

• independent variable

• dependent variable

Multiple Choice

An apple’s freshness will last longer if they are refrigerated. If you did an experiment to test this, the freshness would be the...

• independent variable

• dependent variable

Multiple Choice

The variable that is measured.

• Controlled Variable

• Dependent Variable

• Independent Variable

Multiple Choice

The one factor that a scientist changes during an experiment.

• Controlled Variable

• Dependent Variable

• Independent Variable

Multiple Choice

Identify the dependent variable:
A study was done to find if different tire treads affect the braking distance of a car.

• The car
• The distance the car took to brake 
• The different tire treads
• The drive

Multiple Choice

Identify the independent variable:
The height of bean plants depends on the amount of water they receive. 

• The bean seed
• The amount of water provided daily
• The amount of sunlight they're exposed to daily
• How tall they grow by the end of the experiment