KS3 Light and Sound

Sound travels FASTEST through which of these materials?

• Air
• Empty space
• Metal
• Water

Tags

NGSS.MS-PS4-2

Sound is caused by? 

• force
• vibrations
• instruments

What is frequency?

• the number of vibrations per second
• how high or low a sound is
• the loudness or softness of a sound
• the back and forth movement of matter

Tags

NGSS.MS-PS4-1

Sound does not travel in space because

• Space is too far away.
• There is no matter in space.
• Space is the final frontier
• Space has planets.

Identify the order in which sound travels through the ear 

• hammer, stirrup, anvil, eardrum, ear canal
• ear canal, eardrum, hammer, stirrup, anvil 
• ear canal, eardrum, hammer, anvil, stirrup
• eardrum, ear canal, hammer, anvil, stirrup

________ is the degree of loudness of a sound.

• Pitch
• Volume

________ is the highness or lowness of a sound.

• Volume
• Pitch

The bell rings. How do you hear it?

• The air moves the sound to your ears.
• The vibrations of the bell make your ears vibrate.
• The vibrations of the bell make the air vibrate, which make your ear drum vibrate
• The sound source vibrates and you hear it.

Sound travels fastest through a gas.

• False
• True

Which one is NOT a danger of listening to music loudly?

• headache
• damaging your ear drum
• singing loudly
• ringing in the ears