KS3 How Science Works: Variables

Choosing what to change and observing changes

How Science Works

Variables - Working scientifically - KS3 Science - BBC Bitesize

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Open Ended

What score did you get on the Test your knowledge quiz?

Match

Match the key terms

• The variable you choose to change

• The variable you measure

• The variables you keep the same

• An experiment that measures what you intend to measure

Independent variable

Dependent variable

Control variables

Valid

• Independent variable

• Dependent variable

• Control variables

• Valid

Open Ended

Professional baseballs are made to be the same size, shape and weight. They are stored at the same temperature before they are used. Explain why you think this is.