sound part 2

Sound does not travel in space because...

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

Sound moves in a _________.

• Transverse wave
• Longitudinal wave

Which of these sound waves has the highest frequency?

• 
• 
• 

The speed of sound at 20 degrees celcius and sea level is:

• 331 m/s
• 365 m/s
• 621 m/s
• 343 m/s

The ______ of a sound depends on the medium through which it's moving.

• pitch

• vibration

• speed

• loudness

Which state of matter do sounds travel fastest in?

• Solid

• Liquid

• Gas

• Plasma

Calculate the speed of sound if a sound wave travels 680 m in 2 seconds.

• 1360 m/s

• 340 m/s

• The speed of sound is always the same

• 250 m/s

A teacher bangs two bits of wood together. She hears an echo from a wall 0.14 seconds later. The wall is 25m away. What is the rough speed of sound, ACCORDING TO THESE RESULTS?

• Roughly 340 m/s

• Roughly 360 m/s

• Roughly 375 m/s

• Roughly 330 m/s

What does the fluid inside your ears do when displaced?

• Vibrates the skin in your ear

• Sends sound waves to the brain

• Displaces the hair cells.

• Stimulates the hair cells to send an impulse