full sound

Which one of the following material will reflect sound better?

• Thermocole

• Curtain made from cloth

• Steel

• Paper

The velocity of sound in vacuum is

• 330 m/s

• 1430 m/s

• 6100 m/s

• 0

The human perception of how much energy a sound wave carries

• frequency

• loudness

• distance

Some animals use this to navigate and hunt

• frequency

• ecolocation

• vibration

The total time for sound waves to return to a ship was 8 seconds after being released. What is the depth in meters?

Distance (Depth) = Velocity x (Total time/2)

Velocity of sound in water = 1500 m/s

• 12,000m

• 6000m

• 375m

• 187.5m

The total time for sound waves to return to a ship was 4.5 seconds after being released. What is the depth in meters?

Distance (Depth) = Velocity x (Total time/2)

Velocity of sound in water = 1500 m/s

• 6750m

• 333.33m

• 667m

• 3375m

If the depth of the ocean floor is 7500 meters, how long does it take sound waves to reach the bottom of the ocean?

Distance (Depth) = Velocity x (Total time/2)

Velocity of sound in water = 1500 m/s

• 10sec

• 5sec

• 11,250,000sec

• 0.2sec

A rapid back and forth movement?

• Echo
• Vibrate
• Pitch
• Amplitude

Tags

NGSS.MS-PS4-1

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

______________ sounds have a larger amplitude

• quiet

• loud

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2