Scientific Variables

In an experiment, a variable is...

• Something that remains the same.

• Something that is changed.

• A constant

• The hypothesis

In an experiment, the constant, or control, is...

• Something that is changed.

• What you're measuring.

• Something that does not change.

• Your conclusion.

In your experiment, the factor that you measure is called the...

• independent variable

• dependent variable

• control

• ruler

In an experiment, the factor that is changed is called the...

• independent variable

• dependent variable

• control

• spam

Choose the correct definition of a constant or a control in a scientific experiment.

• The factor that is always changing.

• Something that happens a lot.

• All the factors that stay the same in an experiment.

• Stating whether your hypothesis was correct.

Why is it important to only change the independent variable in an experiment?

• It's not important.

• To keep the experiment fair.

• To prove your hypothesis correct

• To make sure you have enough detail for your conclusion.

Steve wanted to see if the type of fertilizer he uses in his garden makes his sunflowers grow larger. If he did an experiment to find this out, what would be the independent variable?

• Type of fertilizer

• Size of sunflower

• type of sun flower

Tags

NGSS.MS-LS1-5

In this same experiment of Steve finding out which type of fertilizer would make his sunflowers grow larger, what would be the dependent variable?

• Type of fertilizer

• Size of sunflower

• Type of sunflower

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid, water, apple juice and gatorade. Each plant has the same amount of sunlight, soil and listens to the same music. What is the independent variable?

• the type of plant

• the type of liquid

• the type of music

• the amount of liquid

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid, water, apple juice and gatorade. Each plant has the same amount of sunlight, soil and listens to the same music. What is the control?

• The size of the plant.

• The type of liquid.

• There are no controls.

• Amount of sunlight, soil and music.