KS3 Waves

Light travels... (select 2 answers)

• Around corners

• In straight lines

• Faster in glass than in air

• Faster than sound

What are the mistakes in the image? Select 2 answers.

• The arrow on the light ray is going towards the person's eye

• The arrow on the light ray is going away from the person's eye

• The arrow on the light ray is going towards the light source

• The arrow on the light ray is going away from the light source

Which is true about reflection?

• The angle of incidence is bigger than the angle of reflection.

• The angle of incidence is smaller than the angle of reflection

• The angle of incidence = the angle of reflection

When drawing ray diagrams, you need to...

• Use a ruler

• Use a pencil

• Have no gaps in the light rays

• Put an arrow to show the direction the light ray is travelling

What is happening to the light ray at the surface of the water to mean the fish appears higher up than it is?

• The light ray is reflecting

• The light ray is refracting

• The light ray is scattering

• The light ray is absorbed

The picture shows 4 sound waves on an oscilloscope. Which has the highest pitch?

• A

• B

• C

• D

The picture shows 4 sound waves on an oscilloscope. What can you say about A?

• It is a very low pitched sound

• It is a very high pitched sound

• It is a very quiet sound

• It is a very loud sound

The picture shows 4 sound waves on an oscilloscope. Which 2 have the smallest amplitude?

• A

• B

• C

• D

The picture shows 4 sound waves on an oscilloscope. What is the wavelength of B?

• 4 boxes

• 2 boxes

• 6 boxes

• 8 boxes

Which statement is true of sound waves. Select 2 answers.

• They are made by objects vibrating

• They are detected because they make our ear drum vibrate

• They are transverse waves

• They travel faster in air than in water.