Grade 4 Light and Sound test

Front

What is a form of energy that travels through the air?

Back

sound

Front

___________ is made when something vibrates

Back

sound

Front

The volume of a sound is measured in units called ________

Back

decibels

Front

Sound travels through the air as waves.

Back

True

Front

A sound that bounces off a surface is called an ________.

Back

echo

Front

Matter that carries sound waves is called a _________

Back

medium

Front

The ______ of a sound depends on the medium through which it's moving.

Back

speed

Front

The number of vibrations per second

Back

frequency

Front

How high or low a sound is

Back

pitch

Front

The loudness of a sound

Back

volume