Waves and optics crossword

Max displacement of particles in equilibrium
Lowest point on a wave
Distance between 2 adjacent points ( crest to crest )
The particles in the medium vibrate along the same direction as the wave ( parallel)
The particles of the medium that vibrate up and down ( perpendicular) to the wave
Examples of this are : water waves , waves on a string ,& sound waves
Zero hight, starting position to measure amplitude
Where particles are far apart
A wave that remains in a constant position
The change in direction and wave length when a wave moves from one medium to another
When some of the waves energy is taken away when it encounters a medium
When a wave remains in the same medium but bends around obstacles
The number of times per second a wave cycles
When one wave comes in contact with another wave
Matter that a wave passes through
When a wave bounces of a boundary , changing direction but remiaining in the same medium
When a wave bounces off a boundary and changes direction but remains in the same medium
The measurement of the strength of a sound wave
The measurement of the strength of a sound wave
The tendency of a system to ocillate with greater amplitude at some frequencies more then others