the substance through which a mechanical wave travels.

waves where the particles are disturbed perpendicular to the

direction of the wave

Waves where particles are disturbed back and forth parallel to

(in the same direction as) the wave

a measure of the number of times a wave cycles per unit time (typically

1 second).

a measure of the time it takes a wave to complete one cycle or to move the

distance of one wavelength

the throwing back by a body or surface of light, heat, or sound without

absorbing it.

the bending of light or sound as it passes through something like a wall

(sound) or a window (light).

the process or action by which one thing absorbs or is absorbed by

another

the act of transferring something from one spot to another

not letting light through : not transparent.

allows the passage of some light through a object

allowing light to pass through so that objects behind can be clearly

seen.

the spreading of waves around obstacles

a change in the direction of motion of a particle because of a collision

with another particle