Sound Energy Review By Ms. Nguyen

What is sound? A form of energy caused by _____________. Vibrations are the rapid back and forth ______________ of molecules. Sound travels in ____________. Sound travels in all ______________ from its source.

Pitch Measures how _____ or ______ a tone sounds to your ear. Pitch depends on the ____________ of the sound waves. ____________ is the measure of the number of waves that pass in a given amount of time. High frequency= more waves= ______ pitch. The longer, larger, or looser an instrument = _______ pitch.

Volume Volume is the __________ or intensity of a sound. Volume depends on the amount of___________ used to produce the sound. Yelling requires ___________ energy compared to whispering.

More Volume Volume is how ___________ or ____________ a sound is. Sounds can be reflected off surfaces or __________ by them. The library uses materials that absorbs sound like:_______ The gym uses materials that reflects sound like:________ When sound is reflected off a surface we can hear an _______. The reflection of sound is known as __________________.

Speed of Sound Sound travels faster through ____________. Sound travels ___________ through liquids and gases. A vacuum is a place with no ___________. Sound does not ______________ through a vacuum. There is no _________ in space so no sound are produced.