	Java Games: Matching, concentration, word search, and flashcards.

Science Chapter 21 The Nature of Sound Matching Activity II

Learn your vocabulary words by matching terms and definitions.

Tools

A	B
sound waves are caused by	vibrations
all sound waves need a __ to travel	medium
outer, middle, inner	parts of the ear
A sounds pitch is related to	frequency
frequency is to hertz as decibels is to	loudness
using reflected sound to find objects	echolocation
combination of two or more sound waves into a single wave	interference
frequencies at which standing waves are made	resonant frequencies
musical instrument families	string, wind, wood
noise	a random mix of frequencies
region of high density air particles	compression
region of low density air particles	rarefaction