Independent Dependent Variable Science

In a science experiment, what is an independent variable?

• The thing that you change

• The thing that you measure

• The thing that you keep the same

In a science experiment, what is the dependent variable?

• The thing that you change

• The thing that you measure

• The thing that you keep the same

In the scientific question "Does the amount of fertiliser affect the height that a bean plant grows?"

What is the independent variable?

• Amount of fertiliser

• Height of the bean plant

• Amount of soil used

• How often the plant is watered

In the scientific question "Does the amount of fertiliser affect the height that a bean plant grows?"

What is the dependent variable?

• Amount of fertiliser

• Height of the bean plant

• Amount of soil used

• How often the plant is watered

Make a prediction by finishing the sentence.

If more fertiliser is added to the bean plant the plant will.....

In the scientific question "If salt is added to water, will the water boil at a different temperature?"

What is the independent variable?

• Amount of salt added

• Whether salt is added or not

• Temperature the water boils at

• The amount of water mixed with the salt

In the scientific question "If salt is added to water, will the water boil at a different temperature?"

What is the dependent variable?

• Amount of salt added

• Whether salt is added or not

• Temperature the water boils at

• The amount of water mixed with the salt

Make a prediction by filling in the blank.

If salt is added to water the water will boil at a ________ temperature than if no salt was added.

In the scientific question "Does the colour of light used on plants affect how well they grow? "

What is the independent variable?

• How well plants grow

• Colour of light

• Type of plant that is used

• How often the plants are watered

In the scientific question "Does the colour of light used on plants affect how well they grow? "

What is the dependent variable?

• How well plants grow

• Colour of light

• Type of plant that is used

• How often the plants are watered