Sound

Sound is caused by ?

• Vibration

• Ms. Wong

• Movement

• Viblation

What object is used to measure sound wave ?

(No capital letters)

What is C ?

• Compression

• Rareflraction

• Dots

• Rarefraction

Sound needs a _____ to travel.

(No capital letters)

Sound travels the fastest through gas followed by liquid and solid.

• True

• False

Sound can travel through . . . EXCEPT

• Gas

• Vacuum

• Solid

• Liquid

What is A called ?

(No capital letters)

What is Wavelength in sound waves ?

• Distance between 2 crest and 1 troughs.

• Distance between 1 crest / troughs.

• Distance between 2 crests / troughs.

• Distance between 1 crest and 1 troughs.

The higher the ______ the louder the sound.

(NO CAPITAL LETTERS)

What is the unit for amplitude ?

• Hertz (Hz)

• Ohms

• Decibels (dB)

• Decibles (dB)