A(n) ________ is the material through which a wave travels.

The high points of a wave are called ___________.

The lowest parts of a wave are called __________.

In a ________ wave, particles move back and forth in the same direction that the wave travels, or parallel to the wave.

Particles move perpendicularly to the direction the waves travels in a _____________ wave.

_____________ waves require a medium to travel through.

A disturbance in electric and magnetic fields is a(n) __________ wave.

_________ is a measure of how far the particles in the medium move away from their normal rest position.

___________ is the distance from any point on a wave to an identical point on the next wave.

The wave period is the time required for one __________.

The ____________ tell how many cycles occur in an amount of time, usually 1 second.

Frequency is expressed in _______________.

The speed at which a wave travels is called ________________.

The transfer of energy as electromagnetic waves is called _____________.

The longest electromagnetic waves are ________________.

The waves with the shortest wavelength are ____________.

Matter that transmits light is ______________.

Materials that transmit light but don't let the light travel straight through it are called ______________.

Materials that don't let any light pass through are ___________.

____________ is the transfer of light energy to matter.

___________ is the bouncing of light off a surface.

The speed of light is _________________ m/s.

____________ is the change in direction of a wave as it passes from one medium into another at an angle.

____________ occurs when light is sent in many directions as it passes through a medium.