chapter 3
Terms
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- wavelength
- distance between a point on one wave and an identical from crest 2 crest or trough 2 trough
- focal point
- temperature at which attractive forces trap particles in a cooling liquid and form crystals
- concave lens
- lens whose edges are thicker than its middle;cause light waves 2 diverge
- compressional wave
- a wave in which matter moves forward and backward in the same direction the wave travels
- interference
- ability of two or more waves 2 combine and form a new wave when they overap
- electromagnetic wave
- types of wave such as a light wave or a radio wave that can travel in vacuum as well as in various materials
- transverse wave
- wave in which matter moves back and forth at right angel 2 the direction the wave travel
- convex lens
- lens whose center is thicker than its edges;cause light wave 2 converge
- focal length
- distance of the focal point from the center if the mirror or lens
- frequency
- number of wave that pass a given point in one second or hertz
- light ray
- narrow beam of light traveling in straight line
- refraction
- bending of a light wave when it changes speed in moving from one material 2 another
- lens
- transparent object that cause light 2 bend
- amplitude
- measure of the energy a wave carries
- wave
- regular disturbances that carry energy through matter or space without carrying matter can have different amplitudes frequencies wavelengths and speeds
- medium
- material in which a light wave travels
- diffraction
- bending of waves around a barrier
- reflection
- occurs when a wave strikes an object surface and off
- reflection
- occurs when a wave strikes an object or surface and bounces off
- mechanical wave
- waves that can travel only trough matter
- law of reflection
- states that the angle of incidence is equal to the angle of reflection