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Machines and Forms or energy

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  • It is a slanting surface that connects a low level with a high level.
    An inclined plane.
  • Sound is produced when objects ___________.
    vibrate
  • Food contains ___________.
    Chemical energy
  • A ________ uses a wheel and a rope to lift or lower an object.
    pulley
  • When light reaches an object, it can do one or more of the following things:
    It can be reflected, it can be absorbed or it can pass through the object.
  • Energy can be obtained from ____________ or ____________ sources.
    renewable or non-renewable
  • _____________ is in anything that's hot.
    Thermal energy
  • The Sun produces lots of ____________, too.
    Light energy
  • A complex machine...
    is made out of many simple machines and/or need electrical energy to work.
  • A __________ is an object with at least one slanting edge.
    wedge
  • Complex machines use energy that can come from ...
    people, electricity or fuel
  • _____________ is a man-made source of ligtht.
    candles, flashlights....
  • We use it to hold things together or lift objects.
    A screw
  • A _________ is a circular object that turns around an ___________.
    wheel / axle
  • A machine is something __________________________.
    we use to make work easier.
  • A simple machine ....
    has few or no moving parts.
  • Moving things have _____________.
    Kinetic energy
  • We can classify machines as _____________ or _______________.
    simple or complex machines
  • _______things have more energy than _______ things.
    hot / cold
  • We use ____________ for a lot of things in our homes.
    Electrical energy
  • A __________ is a rigid bar with a support called a ___________.
    lever / fulcrum
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