topic 1 physics notes

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  • Created by: Farah
  • Created on: 19-02-13 17:16
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  • TOPIC 1
    • geocentric model- the sun, moon & planets orbited the earth
    • heliocentric model-  Earth & planets orbited the sun
    • visible light- given off so you can see objects
    • naked eye- map positions
    • Transverse waves are light waves travel 90 degrees
    • longitudinal waves-sound waves travel in  1 direction
    • reflection- when a wave hits a boundary between one medium  & another.
    • refracted- changes direction
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