1. Mechanical
1. Transmit waves through matter
2. Electromagnetic
1. Transmit energy through a vacuum

1. Mechanical
1. Transmit waves through matter
2. Electromagnetic
1. Transmit energy through a vacuum

1. Maximum downward disturbance of a wave
2. Use resting point as measurement (no distrurbance)

1. Max mount of displacement from a resting point
2. High energy waves have greater amplitutdes
3. Measures the wave's strength

1. One complete cycle
2. Crest to Crest

1. Measure of how often a particle in a medium vibrate when a wave passes through a medium
2. Usually in Hz (hertz)
3. 1 Hz is 1 Cycle per second
4. 2 hz is equal to 8 cycles per 4 seconds

1. Measure how long it takes to complete a cycle
2. Measure of time only

1. How fast or slow a wave travels
2. Usually measured in terms of distance over time
3. Meters per second

1. Waves that travel in the same direction as the particle movement
2. Called pressure, compressional, or density waves
3. Similar to slinky toy

1. Move in perpendicular to the direction of the particle movement
1. If particles in a medium move up and down, a transverse wave will move forward
2. Only in solids and slower than logitudinal

1. Travel at the surface of a material and move in elliptical orbits
2. Little slower than shear waves

1. Can be in phase or out of phase
1. If peaks align for a wave they are in phase
2. When in phase the displacement is double, out of phase they cancel each other out
3. If somewhat in the middle you add them together to see

1. Pressure distance that moves through a medium in the form of mechanical waves
2. Requires a medium to pass through it
3. Transfer energy of particles, not the actual particle

Frequnecy = Phase Speed / Wave Length

Phase Speed is always 3.0x10^9

1. Wavelengths that are not absorbed
1. Apple is red because it absorbed everything but red light
2. Rough surfaces scatter light
3. Smooth reflect in one dirrection
4. Mirror reflect mainly in a parallel direction

1. Change in any waves direction because of a change in its velocity
2. Can appear distorted because of it

Longest Wavelength to Shortest (Red to Violet)

When entire wavelength comes back it shows as white, no part is black

Diffration refers to the bedning of waves around small objects and the spreading out of waves past small openings. Smaller the opening, greater the difraction. Larger wavelengths also increase diffraction

Certain wavelength of visible when they interaction with matterm.

WHen wavelengths that are not abosrbed the can by transmistted by transparent material or rerflected by opaque