Grade 7 REVISION: UNIT 11- 12

Sound waves can be shown on an oscilloscope. What happens to the loudness of the sound between X and Y?

• Increases

• Decreases

• Stays the same

What happens to the amplitude of the sound between X and Y?

• Increases

• Decreases

• Stays the same

What happens to the pitch of the sound between X and Y?

• Increases

• Decreases

• Stays the same

What happens to the frequency of the sound between X and Y?

• Increases

• Decreases

• Stays the same

Mia investigates shadows. She puts a piece of card between a flashlight and a screen. A shadow forms on the screen. Which answer shows the size of the shadow?

• A to B

• A to C

• A to E

• B to D

Blessy does an experiment with light. She uses a single incident light ray and a curved glass block. What is happening to the ray of light as it goes from the air into the glass block?

Evaluate responses using AI:

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The bigger the vibrations of the air particles the quieter the sound.

• True

• False

Sound waves can move through air, water and a vacuum.

• True

• False

When there is no sound the particles stop moving.

• True

• False

A high pitched sound is always loud.

• True

• False