Science_Chapter_12

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Author:
caleb1
ID:
196679
Filename:
Science_Chapter_12
Updated:
2013-01-30 14:41:42
Tags:
prism vibration simple machines
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Description:
science flash cards for chapter 12
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  1. the measure of how much useful work a machine puts out compared to the amount of work put into it.
    efficiency
  2. the number of times a sound source vibrates in one second.
    frequency
  3. a material that transfers heat well
    conductor
  4. the transfer of heat through space
    radiation
  5. the ability to do work
    energy
  6. when light strikes a surface and bounces off
    reflection
  7. when a force is used to move an object a certain distance
    work
  8. the highness or lowness of sound
    pitch
  9. a material that does not transfer heat very well
    insulator
  10. the object being lifted or moved by a simple machine
    load
  11. the bending of light as it passes from one material to another
    refraction
  12. the distance an object moves in a certain amount of time
    speed
  13. a range of light waves with different wavelengths and energies
    spectrum
  14. the force that works against motion between surfaces that touch
    friction
  15. the energy in a sound wave
    amplitude
  16. words such as above and below, left and right, and north and south give clues about…
    position
  17. Name 4 simple machines
    wheel and axle, wedge, pulley, inclined plane, lever
  18. A rock rolling down a hill has…
    kinetic energy
  19. Sources of heat such a coal, oil, and natural gas
    Fossil fuels
  20. Lenses are tools that _______ light.
    refract
  21. Frequency (the number of times a sound source vibrates in one second) determines…
    pitch
  22. Sound carries ______ because energy is needed to start an object vibrating to make a sound.
    energy
  23. The opposite of an insulator
    conductor
  24. A range of all light waves with varying wavelengths.
    electromagnetic spectrum
  25. A push or pull that makes a object start moving, stop moving , speed up, slow down, or change directions
    force
  26. The principal of Newtonian physics that describes the tendency of an object to stay at rest or to stay in motion.
    inertia
  27. Energy of motion is also called...
    mechanical energy
  28. A wheel with teeth
    gear
  29. A flat slanted surface
    inclined plane
  30. How much force you use to move something
    effort force
  31. Two inclined planes back to back
    wedge
  32. A machine made up of two or more simple machines
    compound machine
  33. A inclined plane twisted around a spiral
    screw
  34. A simple machine that is not attached to anything, but it increases the force to move an object, but it does not change the direction of the force.
    A movable pulley
  35. A bar that can turn or pivot on a fixed point called the fulcrum.
    lever
  36. A simple machine that you might use to move a heavy box into a truck.
    ramp
  37. Two things you can save by using tools.
    Time and energy
  38. The transfer of energy by the flow of liquids and gases
    convection
  39. The transfer of energy when one particle bumps into another.
    conduction
  40. The distance from the top of one wave to the top of the next wave.
    wave length
  41. Any smooth, shiny object that reflects almost all the light that falls on it.
    mirror
  42. Light waves with a shorter wavelength differ from those with a longer wavelength because they have...
    higher energy
  43. White light can be separated into colors that make it up by passing it through a...
    Prism
  44. A back-and-forth movement
    vibration
  45. An area of crowded particles followed by an area of widely spaced particles.
    sound waves
  46. If you tighten or loosen guitar strings you are adjusting the pitch of the sound by changing the...
    frequency of the sound waves
  47. What simple machines would help to load objects onto a truck if they are too heavy to lift.
    A wheel and axle and a ramp.

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