Science Variables

Front

What is an independent (manipulated) variable?

Back

The one factor that is changed in an experiment to test its effects.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4

Front

What is a dependent (responding) variable?

Back

The factor that is measured or observed in an experiment, which changes in response to the independent variable.

Tags

NGSS.MS-PS3-4

Front

What is a controlled variable?

Back

Factors that are kept constant throughout an experiment to ensure that the results are valid.

Front

In an experiment, if you change the amount of sunlight a plant receives, what is the independent variable?

Back

The amount of sunlight.

Tags

NGSS.MS-LS1-5

Front

In an experiment measuring how different fertilizers affect plant growth, what is the dependent variable?

Back

The growth of the plants.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Front

Why is it important to have controlled variables in an experiment?

Back

To ensure that the results are due to the independent variable and not other factors.

Front

What is the purpose of an experiment?

Back

To test a hypothesis by manipulating variables and observing the effects.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS2-2

Front

If a scientist is testing how temperature affects the rate of a chemical reaction, what is the independent variable?

Back

The temperature.

Tags

NGSS.MS-PS1-4

Front

If a researcher is studying how different types of music affect concentration, what is the dependent variable?

Back

The level of concentration.

Front

What does it mean to manipulate a variable in an experiment?

Back

To change or control one variable to observe its effect on another variable.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4