Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Lauren Staats
Chapter 17&18 Vocab
| Question | Answer |
|---|---|
| mechanical wave | disturbance in matter that carries energy from one place to another |
| medium | material through which a wave travels |
| crest | highest point of the wave above the rest position |
| trough | lowest point below the rest position |
| transverse wave | a wave that causes the medium to vibrate at right angles to the direction in which the wave travels |
| compression | an area where the particles in a medium are spaced out |
| rarefraction | an area where the particles in a medium are spread out |
| longitudinal wave | a wave in which the vibration of the medium is parallel to the direction the wave travels |
| surface wave | wave that travels along a surface separating two medium |
| periodic motion | any motion that repeats at regular time intervals |
| period | time required for one cycle, a complete motion that returns to its starting point |
| frequency | the number of complete cycles in a given time |
| hertz | frequency measured in cycles persecond |
| wavelength | the distance between a point on one wave and the same point on the next cycle of the wave |
| amplitude | the maximum displacement of the medium from its rest position |
| reflection | occurs when a wave bounces off a surface that it cannot pass through |
| refraction | bending of a wave as it enters a new medium at a angle |
| diffraction | bending of a wave as it moves around an obstacle or passes through a narrow openin |
| interference | occurs when two or more waves overlap and combine together |
| constructive interference | occurs when two or more waves combine to produce a wave with a larger displacement |
| destructive interefence | occurs when two or more waves combine to produce a wave with smaller displacements |
| standing wave | a wave that appears to stay in one place |
| node | a point on a standing wave that has no displacement from its rest position |
| antinode | a point where a crest or tough occurs midway between two nodes |
| electromagnetic waves | transverse waves consisting of changing electric fields and changing magnetic fields |
| electric field | a region of space exerts electric forces on charged particles |
| magnetic field | a region of space produces magnetic forces |
| electromagnetic radiation | transfer of energy by electromagnetic waves traveling through matter or across space |
| photoelectric effect | emission of electrons from a metal caused by light striking the metal |
| photons | packets of electromagnetic energy |
| intensity | rate at which a wave's energy flows through a given unit of area |
Created by:
lauren.staats
Popular Physical Science sets