Olivia's science

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Anonymous
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298114
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Olivia's science
Updated:
2015-03-10 20:52:07
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olivia science
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Olivia's science
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  1. When light strikes a surface and bounces off.
    reflection
  2. The measure of how much useful work a machine puts out compared to the amount of work put into it.
    efficiency
  3. The ability to do work.
    Energy
  4. The number of times a sound source vibrates in one second.
    frequency
  5. The transfer of heat through space.
    radiation
  6. A material that transfers heat well.
    Conductor
  7. The energy in a sound wave.
    amplitude
  8. The bending of light as it passes from one material into another.
    refraction
  9. The force that works against motion between surfaces that touch.
    friction
  10. A range of light waves with different wavelengths and energies.
    spectrum
  11. The object being lifted or moved by a simple machine.
    Load
  12. A material that does not transfer heat very well.
    insulator
  13. When force is used to move an object a certain distance.
    work
  14. A rock rolling down a hill has _______
    Kinetic energy  (energy in motion)
  15. Sound carries _____________ because energy is needed to start an object vibrating to make sound.
    energy
  16. A push or pull that makes an object start moving, stop moving, speed up, slow down, or change direction is a(n)______________
    force
  17. The tendency of an object to stay at rest or to stay in motion is called
    inertia
  18. Energy of motion is also called
    mechanical energy
  19. A wheel with teeth is a
    gear
  20. A machine made up of two or more simple machines is a...
    compound machine.
  21. A inclined plane twisted into a spiral is a
    screw
  22. This simple machine is not attached to anything.  It increases the force to move an object, but it does not change the direction of the force.  It is a...
    movable pulley
  23. A bar that can turn or pivot on a fixed point called the fulcrum is a...
    lever
  24. White light can be separated into the colors that make it up by passing it through a...
    prism
  25. An area of crowded particles followed by an area of widely spaced particles is called a(n)
    sound wave

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