Checkpoint Physics Review

Sound is produced from _________ ?

• movement

• vibration of wave

• vibration of particles

• particles moving randomly

Sound can travel through which medium?

• solid

• vacuum

• liquid

• gas

Amplitude shows ______ of sound.

• the pitch

• the volume

Amplitude tells ________ ?

• how big the vibration is

• how frequent the vibration is

Amplitude is measured in _______

• decibel (dB)

• herzt (Hz)

Frequency shows ______ of sound.

• the pitch

• the volume

Frequency tells ________ ?

• how big the vibration is

• how frequent the vibration is

Frequency is measured in _______

• decibel (dB)

• herzt (Hz)

Longer things vibrate less. (T/F?)

Thicker things vibrate more (T/F?)

• T _ F

• F _ T

• T _ T

• F _ F

The range of hearing for human is: _________ Hz - __________ Hz (Fill in the blank, exactly like this form: 50 - 10000)

(a)