Ch. 22 Notes
Terms
undefined, object
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- type of energy that travels as a wave
- light
- a wave that consists of electic and magnetic fields that vibrate at right angles to each other
- electromagnetic waves
- EM waves are produced by the vibration of an _____ ____ _____
- electrically charged particle
- transfer of energy as electromagnetic waves
- radiation
-
distance
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time - speed
- the speed of light is
- 300,000km/s
- the time it takes light to travel one year
- light year
- Why is light from the sun important?
- light is a major source of energy on earth
- the entire range of EM waves
- electromagnetic spectrum
- Name the EM spectrum from long wavelength to short wavelength
- radio waves, microwaves, infared waves, visible light (ROY G BIV), UV waves, X rays, gamma rays
- visible light of all wavelengths combined
- white light
- light waves bounce off an object
- reflection
- the bending of a wave as it pass from one substance to another
- refraction
- waves combine and form a larger wave
- cinstructive interference
- waves combine and form a smaller wave
- destructive interference
- matter through which light is easily transmitted
- transparent
- transmits light but also scatters the light as it passes through the matter
- translucent
- matter that doesn't transmit any light
- opaque