Card Set Information
When light strikes a surface and bounces off.
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 one second.
The transfer of heat through space.
A material that transfers heat well.
The energy in a sound wave.
The bending of light as it passes from one material into another.
The force that works against motion between surfaces that touch.
A range of light waves with different wavelengths and energies.
The object being lifted or moved by a simple machine.
A material that does not transfer heat very well.
When force is used to move an object a certain distance.
A rock rolling down a hill has _______
Kinetic energy (energy in motion)
Sound carries _____________ because energy is needed to start an object vibrating to make sound.
A push or pull that makes an object start moving, stop moving, speed up, slow down, or change direction is a(n)______________
The tendency of an object to stay at rest or to stay in motion is called
Energy of motion is also called
A wheel with teeth is a
A machine made up of two or more simple machines is a...
A inclined plane twisted into a spiral is a
This simple machine is not attached to anything. It increases the force to move an object, but it does not change the direction of the force. It is a...
A bar that can turn or pivot on a fixed point called the fulcrum is a...
White light can be separated into the colors that make it up by passing it through a...
An area of crowded particles followed by an area of widely spaced particles is called a(n)