Machines

How is a machine helpful?

• Machines do work.

• Machines make work harder.

• Machines make people do more work.

• Machines make life more difficult.

What does a motor need to move?

• energy

• wheels

• levers

• pulleys

What is an example of a wheel and axle machine?

• shovel

• ramp

• swing

• bicycle

What is every machine made of?

• simple machines

• wheel and axles

• levers

• complex machines

What makes machines move?

• wood

• motors

• nails

• metal

What powered the model airplane in the video?

• inclined plan

• motor

• wind

• gas

All bicycles use motors

• True

• False

Which is a source of energy?

• manpower

• motors

• engines

• motion

What makes a bicycle easy to ride?

• levers

• gears

• engine

• motor