KS3 light & sound

Light travels... (select 2 answers)

• Around corners

• In straight lines

• Faster in glass than in air

• Faster than sound

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

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.

What is the height of a wave called?

• Peak

• Wavelength

• Amplitude

• Frequency

Which explains why the fork looks different under water?

• light can't pass through the glass
• the wavelength of light lengthens
• the amount of light increases when going through water
• light is refracted at an angle

Another name for light bending is ....

• Reflaction
• Absorbing
• Refraction
• mirror

The Law of Reflection:
The angle of incidence is _________ the angle of reflection

• bigger than
• the same as
• smaller than

Luminous means...

• Gives out its own light
• Reflects light from other things

White light is made up of _________________ colors.

• 10
• 3
• 7
• 70