These type of waves are incapable of transmitting its energy through a vacuum.
What are Mechanical waves
These types of waves are the ones that come from radios. They can travel space.
What are Electromagnetic waves
The change in direction of waves as they pass through an opening or around a barrier in their path.
The angle of incidence is equal to the angle of reflection.
What is The Law of reflection
(we want the equation)
If you squeeze a Slinky toy together and then release it will move away from the middle going both directions. This is called ?
What is a Longitudinal Wave
This animal can hear frequencies between 67-45,000 Hz.

An increase (or decrease) in the frequency of a wave as the source and observer moving towards (or away from) each other.
This is the change in direction that waves encounter as they pass through an opening or around a barrier in their path.
What is Diffraction
an increase (or decrease) in the frequency of a wave as the source and observer move toward (or away from) each other.