science test

The energy in a sound wave

A material that transfers heat well

The measure of how much useful work a machine puts out compared to the amount of work put into it

The ability to do work

The number of times a sound source vibrates in a second

The force that works against motion between surfaces that touch

A material that doesn't transfer heat well

The object being lifted or moved by a simple machine

The highness or lowness of a sound

The transfer of heat through space

When light strikes a surface and bounces off

The bending of light as it passes from one material to another

A range of light waves with different wavelengths and energies

The distance an object moves in a certain amount of time

When a force is used to move an object to at a certain distance