Grade 7 Sound Online class Quiz Test

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 travels FASTEST through which of these materials?

• Air
• Empty space
• Metal
• Water

Tags

NGSS.MS-PS4-2

Why is the school library covered with carpet?

• So everyone can make a lot of noise
• to help absorb sounds to keep it quiet
• because it looks good
• to help absorb sounds so it can stay noisy

Tags

NGSS.MS-PS4-2

Matter that carries sound waves is called a _________

• low
• high
• medium
• surface

Tags

NGSS.MS-PS4-2

• Frequency
• Amplitude
• Wavelength
• Trough

Tags

NGSS.MS-PS4-1

• Trough
• Crest
• Amplitude
• Wavelength

Tags

NGSS.MS-PS4-1

• Crest
• Trough
• Height
• Frequency

Tags

NGSS.MS-PS4-1

In which medium will sound travel fastest?

• air

• water

• glass

• salt water

Dan was sitting outside playing his new drum when his dog knocked some sand on it.  Afterwards, each time Dan thumped the drum, he noticed the sand on top of the drum bounced.  Which of the following is the best explanation for why this happened?  

• Sand moves easily on drums.
  
• Dan was thumping the drum too hard.
• Vibrations moved from the drum to the sand.
• Vibrations moved from the sand to the drum.

Tags

NGSS.MS-PS4-2

Jane and Sophie were playing a game in the pool.  Jane would ask a question andthen both girls would go under the water where Sophie would say the answer.  The girls observed that the sound was different under water.  Why is the sound different?

• Sophie didn’t speak loudly enough.
  
• Sound doesn’t vibrate in the water.
• Ears don’t receive sound under water.
• Sound moves differently through the water than the air.

Tags

NGSS.MS-PS4-2