Waves light and sound

What is the speed of light?

How do you measure waves per second ?

What is is from one point to another point on a wave?

Light that you can see clearly through

Light that transmit light but scatter

Light that is transmitted but can't see any light?

A section where particles are crowed together?

A section of particles crowed than normal?

Wave in which particles vibrate up and down motion

Wave that requires a medium?

Substance through which a can travel?

Wave that doesn't require a medium?

Particle of a medium vibrates back and forth along a path that a wave travels?

Bouncing back of a wave after it strikes a barrier or an object?

The bending of a wave as it passes at an angle from one medium to another?