Copy of NPMS Knowledge Check - Sound Waves

The lower the frequency, the _____________ the sound.

• Higher
• Lower
• Quieter

The higher the amplitude, the __________________ the sound.

• Higher
• Quieter
• Louder

Sound waves are what type of wave?

• Transverse
• Longitudinal

How loud are noises in space?

• Really loud, nothing out there to stop the sound waves
• It's space, everyone knows there are no sounds in space.
• Never been there, I wouldn't know.

Sound waves are longitudinal waves which have _________________ and rarefactions.

• Crests
• Compressions
• Troughs

Sound does not travel in space because...

• To dark
• Too many asteroids
• No air, so there is no medium to travel through

What is an echo?

• An ABSORBED sound wave
• A TRANSMITTED sound wave
• A REFLECTED sound wave

Sound travels best through ___________________.

• Air
• Water
• Solid

Sound moves in ____________________ directions.

• One
• Two
• Three
• All

Sound waves are produced when when particles in a medium ____________________.

• Vibrate
• Break
• Explode