Quizizz: Independent, Dependent , Controlled Variables Practice

Scenario 1: A student is conducting an experiment to determine how different amounts of sunlight affect the growth of tomato plants.

What is the Independent Variable?

• Amount of sunlight

• Growth of tomato plants

• Type of tomato plant

• Type of soil

Answer explanation

The independent variable is the factor that is changed in an experiment. In this scenario, the amount of sunlight is what the student is varying to observe its effect on the growth of tomato plants.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Scenario 1: A student is conducting an experiment to determine how different amounts of sunlight affect the growth of tomato plants.

What is the Dependent Variable?

• Amount of sunlight

• Growth of tomato plants

• Type of tomato plant

• Type of soil

Answer explanation

The dependent variable is what is measured in an experiment. In this scenario, the growth of tomato plants is measured to see how it changes with different amounts of sunlight, making it the dependent variable.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Scenario 1: A student is conducting an experiment to determine how different amounts of sunlight affect the growth of tomato plants.

What are TWO controlled variables that are NOT independent or dependent variables? Select ALL that apply!

• Amount of sunlight

• Amount of water

• Type of soil

• Growth of Tomato Plant

Answer explanation

Controlled variables are factors kept constant to ensure a fair test. In this scenario, the amount of water, type of soil, and temperature must remain unchanged while testing the effect of sunlight on tomato plant growth.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Scenario: A scientist is investigating how the length of a pendulum affects the time it takes for one full swing.

What is the independent variable?

• Length of the pendulum

• Time for one full swing

• Mass of the pendulum bob

• air resistance

Answer explanation

The independent variable is the factor that is changed in an experiment. In this case, the length of the pendulum is manipulated to observe its effect on the time for one full swing.

Scenario: A scientist is investigating how the length of a pendulum affects the time it takes for one full swing.

What is the dependent variable?

• Length of the pendulum

• Time for one full swing

• Mass of the pendulum bob

• air resistance

Answer explanation

The dependent variable is what is measured in an experiment. In this scenario, the scientist is measuring how the length of the pendulum affects the time for one full swing, making 'Time for one full swing' the dependent variable.

Scenario: Students are experimenting with different paper airplane designs to see which one travels the farthest distance.

What is the independent variable?

• Type of paper

• Launching force

• Paper airplane design

• Distance traveled by the paper airplane

Answer explanation

The independent variable is the factor that is changed in an experiment. In this scenario, the 'paper airplane design' is what the students are experimenting with to see its effect on distance traveled.

Scenario: Students are experimenting with different paper airplane designs to see which one travels the farthest distance.

What is the dependent variable?

• Type of paper

• Launching force

• Paper airplane design

• Distance traveled by the paper airplane

Answer explanation

The dependent variable is what is measured in an experiment. In this scenario, the distance traveled by the paper airplane is the outcome being observed, making it the correct choice.

Tags

NGSS.MS-ETS1-3

NGSS.MS-PS2-2

Scenario: Researchers are studying how varying incubator temperatures impact the hatch rate of chicken eggs.

What is the independent variable?

• Hatch rate of chicken eggs

• Type of chicken eggs

• Incubator temperature

Answer explanation

The independent variable is the factor that is manipulated in an experiment. In this scenario, the researchers are changing the incubator temperature to observe its effect on the hatch rate, making it the independent variable.

Scenario: Researchers are studying how varying incubator temperatures impact the hatch rate of chicken eggs.

What is the dependent variable?

• Hatch rate of chicken eggs

• Type of chicken eggs

• Humidity

• Incubator temperature

Answer explanation

The dependent variable is what is measured in an experiment. In this scenario, the hatch rate of chicken eggs is affected by the incubator temperature, making it the dependent variable.

What is the purpose of a controlled variable in a scientific experiment?

• It is the variable that we manipulate (change) to test our hypothesis.

• It is a factor that we keep constant (the same) to ensure a fair test.

• It is the outcome or result we are trying to measure.

Answer explanation

A controlled variable is a factor that we keep constant to ensure a fair test. This allows us to isolate the effects of the independent variable and accurately assess its impact on the dependent variable.

Tags

NGSS.MS-PS2-2