| A | B |
|---|
| Wave | a disturbance(vibration) that transfers energy bu does not transfer matter. |
| Medium | Matter that mechanical waves travel through (solid, liquid, gas) |
| Mechanical Wave | Type of wave that must have a medium to transfer energy. |
Transverse Wave,  | a mechanical wave where the energy travels perpendicular (90 degree angle) as the energy is transferred |
| Longitudinal Wave | a mechanical wave where the matter moves (same direction) as the energy |
| Crest | The highest point on a transverse wave. |
| Trough | The lowest point on a transverse wave |
| Amplitude | distance between the "normal" (at rest) line on a transverse to the crest, or from the trough. |
| Wavelength | the distance between same two parts of a wave (transverse or longitudinal) |
| Frequency | the number of waves that pass a point in a certain amount of time in the unit called Hertz. |
| Reflection | a wave striking an object(angle of incidence), and bouncing off (angle of reflection) that are equal. |
| Refraction | a wave that enters a medium, changing speed and direction. |
| Diffraction | a wave that strikes an object and bends around that object. |
| Absorption | a wave that strikes an object that is absorbed (does not bounce back, or is not reflected.) |
| Interference | when two waves meet and either amplify(make larger) or cancel(decrease each other) |
| Constructive Interference | two waves that meet that are identical resulting in a larger crest or trough as they pass through each other. |
| Destructive Interference | two waves that meet that are opposites, canceling each other out (flat line NORMAL) as they pass through each other. |
| Electromagnetic Wave | Wave that can travel in space,not needing a medium, consisting of two transverse waves that are perpendicular(90 degrees) to each other. |
| Transverse Wave |  |
| Longitudinal/Compression Wave |  |
| Electromagnetic Wave |  |
| Constructive Interference |  |
| Destructive Interference |  |
| Reflction |  |
| Refraction |  |
| Refraction |  |
| Diffraction |  |
| Diffraction |  |
| Decibels | the intensity of a sound is measured in... |
