Flashcards
Waves Sound and Light
Flashcards do conjunto (23)
- 1a disturbance that moves through matter or spacewave
- 2Waves carry ______ from one place to another.energy
- 3can travel only through matterMechanical waves
- 4can travel either through matter or through empty spaceElectromagnetic waves
- 5causes particles in matter to move back and forth at right angles to the direction in which the wave travelstransverse wave
- 6causes particles in matter to move back and forth along the same direction in which the wave travelscompressional wave
- 7What are the two parts of an electromagnetic wave?They contain electric and magnetic parts
- 8The distance between one point on a wave and the nearest point moving with the same speed and directionwavelength
- 9the number of wavelengths that pass by a point each second.frequency
- 10half the distance between a crest and troughamplitude
- 11The more energy a wave carries, the larger its...amplitude
- 12What is the equation for wave speed?Wave speed=wavelength x frequency
- 13A line that makes an angle of 90 degrees with a surfacethe normal to the surface.
- 14the angle that the incoming wave makes with the normal equals the angle that the outgoing wave makes with the normallaw of reflection
- 15the change in direction of a wave when it changes speed it travels from one material to anotherRefraction
- 16the bending of waves around an object.diffraction
- 17What type of waves are sound waves?Sound Waves are Compressional Waves
- 18Sound waves can only travel through...matter
- 19Sound waves travel faster through...solids and liquids
- 20The speed of sound increases as the _________ of the material increasestemperature
- 21The amount of energy that a wave carries past a certain area each secondintensity
- 22How are intensity and amplitude related?Sound with a greater amplitude also has a greater intensity.
- 23What units do we use to measure sound intensity?units of decibels (dB)
Informações
- Descrição
- 9th Physics FlashCards sobre Waves Sound and Light, criado por Brian Hedspeth em 18-03-2014.
- Criado por
- Brian Hedspeth
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