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MACHINES
BY BRENDA AND ELENA
WE NEED MACHINES

• A machine is something we use to make
work easier.We can classify machines as
simple machines or compl...
SIMPLE MACHINES
PULLEY
• A pulley uses a wheel and a rope to lift or
lower an object.
INCLINED PLANE
• An inclined plane moves objects up or
down.
SCREW
• A screw holds things together or lift
objects
WHEEL AND AXLE
• A wheel turns around an axle .We use it to
move or lift an object
WEDGE
• We use a wedge to cut objects.
LEVER
• A lever is a rigid bar with a fulcrum we
use to lift or move objects
Machines by brenda and elena
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Machines by brenda and elena

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Transcript of "Machines by brenda and elena"

  1. 1. MACHINES BY BRENDA AND ELENA
  2. 2. WE NEED MACHINES • A machine is something we use to make work easier.We can classify machines as simple machines or complex machines.Simple machines have a few movig parts.Complex machines are made up of different simple machines.All machines use energy,but many complex machines need electrical energy to work
  3. 3. SIMPLE MACHINES
  4. 4. PULLEY • A pulley uses a wheel and a rope to lift or lower an object.
  5. 5. INCLINED PLANE • An inclined plane moves objects up or down.
  6. 6. SCREW • A screw holds things together or lift objects
  7. 7. WHEEL AND AXLE • A wheel turns around an axle .We use it to move or lift an object
  8. 8. WEDGE • We use a wedge to cut objects.
  9. 9. LEVER • A lever is a rigid bar with a fulcrum we use to lift or move objects
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