Sound

Why can you hear your friends talking before the enter the room?

• density

• destruction

• diffraction

• disturbance

Tags

NGSS.MS-PS4-2

What causes the Doppler effect?

• A sound wave's frequency.

• A sound wave's intensity.

• Christian Doppler.

• When a sound source moves, the frequency of the waves changes because the motion of the source adds to the motion of the waves.

Tags

NGSS.MS-PS4-1

Sound waves travel the fastest in type of material?

• Solids

• Liquids

• Gasses

Sounds with frequencies below the range of human hearing are called

• infrasound.

• resonance.

• reverberation.

• ultrasound.

What is it called when an object which is flying faster than the speed of sound moves through the sound barrier and the sound waves overlap and ultimately release a huge amount of energy.

• acoustics

• resonance

• shock wave

• sound wave

Tags

NGSS.MS-PS4-1

Frequency is measured in_____________.

• Amps

• Decibels

• Hertz

• Watts

What is Pitch?

• How loud or soft a sound is

• muscle that holds vocal cords

• movement back and forth

• how high or low a sound is

How does sound travel?

• Sounds travels in waves

• sound travels slow

• sound travels fast

• sound doesn't travel

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

What is volume?

• How high or low a sounds is

• reflected sound that comes back and is repeated

• how loud or soft sound is

• movement back and forth

The rate in which sound waves occur is?

• vibration

• echo

• frequency