Science Terms-Ch. 5

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Author:
ccoe
ID:
121231
Filename:
Science Terms-Ch. 5
Updated:
2011-12-08 14:34:13
Tags:
6th Grade
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Description:
Science Terms Chapter 5
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  1. equals distance traveled divided by the time it takes to travel that distance

    S=d/t
    average speed
  2. the speed of an object and the direction of motion; changes when speed changes
    velocity
  3. occurs when an object speeds up, slows down or changes direction
    acceleration
  4. a push or pull
    force
  5. a set of rules developed by Isaac Newton to explain how forces affect the motion of an object
    Newton's laws of motion
  6. a force between two surfaces in contact that resists the motion of the surfaces past each other.
    friction
  7. the tendency to resist a change in motion

    --pushing the wheelchair in a straight line and then trying to change the the direction of motion (turn)
    inertia
  8. is done when an applied force causes an object to move in the direction of the force
    ---picking up a box
    work
  9. a device thta makes work easier with only one movement: include the wedge, screw, lever, wheel and axle, pulley and inclined plane

    Ex. screwdriver
    simple machine
  10. a combination of simple machines

    Ex. can opener
    compound machine
  11. the number of times the applied force is increased by a machine is called the ________
    mechanical advantage
  12. an object, like a wheel, that has a groove with a rope or cable running through it.

    It changes the direction of the input force

    pulley
  13. a rod or plank that pivots about a fixed point.

    The point is called the fulcrum

    lever
  14. a sloped surface, sometimes called a ramp.

    It allows you to lift a heavy load by using less force over a greater distance

    ---Moving a couch from the ground into a trunk bed

    inclined plane

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