Julias Science pg 2

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Author:
julia2
ID:
199412
Filename:
Julias Science pg 2
Updated:
2013-02-10 13:48:05
Tags:
science
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Description:
Science Page 2
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  1. sound is carried by
    energy
  2. what is needed to start an object vibrating to make sound
    energy
  3. Sources of heat such as coal, oil, and natural gas that cannot be easily reproduced.
    fossil fuels
  4. potential energy like a rock rolling down a hill
    kinetic energy
  5. prepositions that give clues about where an object is - like above, below, left and right
    position
  6. the number of times a sound source vibrates in one second -
    pitch
  7. frequency determines the highness or lowness of a sound called
    pitch
  8. the way light bends when passing through a lense
    refract
  9. what is the tendency of an object to stay at rest or to stay in motion
    inertia
  10. the amount of force used to move something is called the
    effort force
  11. what is the energy of motion
    mechanical energy
  12. what is a slanted surface
    inclined planeĀ 
  13. what is a wheel with teeth
    gear
  14. what is an inclined plane twisted into a spiral
    screw
  15. A lever is a barĀ that can turn or pivot on a fixed point is called a
    fulcrum
  16. Two inclined planes back to back make a
    wedge
  17. what is a simple machine that is not attached to anything, but it increases the force to moave an object yet it does not change the direction of the force
    movable pulley
  18. The transfer of energy by the flow of liquids and gases
    convection
  19. You can save time and energy by using
    machines
  20. When light strikes a surface and bounces off
    reflection
  21. The transfer of heat through space
    radiation

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