The measure of how much useful work a machine puts out compared to the amount of work put into it.
What is efficiency?
100
When light strikes a surface and bounces off.
What is reflection?
100
A material that transfers heat well.
What is a conductor?
100
The number of times a sound source vibrates in one second.
What is frequency?
200
When a force is used to move an object a certain distance.
What is work?
200
The bending of light as it passes from one material to another.
What is refraction?
200
The transfer of heat through space.
What is radiation?
200
The highness or lowness of a sound.
What is pitch?
300
The force that works against motion between surfaces that touch.
What is friction?
300
A range of light waves with different wavelengths and energies.
What is a spectrum?
300
A material that does not transfer heat very well.
What is an insulator?
300
The energy in a sound wave.
What is amplitude?
400
The ability to do work.
What is energy?
400
A range of all light waves with varying wavelengths make this up.
What is electromagnetic spectrum?
400
These are three different forms of energy.
What is chemical energy, light energy, and electrical energy, mechanical energy, thermal energy, and nuclear energy?
400
Outer ear, eardrum, middle ear, inner ear, nerve to the brain.
What is the flow of sound when we hear something?
500
The tendency of an object at rest to stay at rest unless a force acts on it.
What is inertia?
500
The distance an object moves in a certain amount of time.
What is speed?
500
Sources of heat such as coal, oil, and natural gas are examples of these.
What are fossil fuels?
500
The outer ear collects sound waves that make an eardrum vibrate, causing the three bones in the middle ear vibrate. The vibrations move along to the fluid filled tube in the middle ear, causing the fluid and small hair cells to vibrate and pass the vibrations onto a nerve that carries the sound messages to the brain.