Wheels, Axles, Gears and Pulleys

Front

What is an axle?

Back

A rod that is fixed to the center of a wheel allowing the wheel to rotate.

Front

What is a wheel?

Back

A round object that turns around an axle.

Front

What is a pulley?

Back

A simple machine that helps lift things using a wheel and a rope.

Front

What is a gear?

Back

A wheel with teeth that helps to move other gears.

Front

What is a fulcrum?

Back

The point on which a lever rests or turns.

Front

What is a simple machine?

Back

A tool that makes work easier, like a wheel, lever, or pulley.

Front

What does a wheel and axle do?

Back

It helps things move by turning.

Front

Can you name a simple machine that helps lift heavy objects?

Back

A pulley.

Front

What is the purpose of gears?

Back

To change the direction or speed of movement.

Front

How does a pulley work?

Back

It uses a wheel and a rope to lift things up.