12.18 SImple Machines

Front

What is a simple machine?

Back

A simple machine is a device that changes the direction or magnitude of a force, making work easier. Examples include levers, pulleys, and inclined planes.

Front

Name the six types of simple machines.

Back

The six types of simple machines are: 1) Lever, 2) Inclined Plane, 3) Wedge, 4) Screw, 5) Pulley, 6) Wheel and Axle.

Front

What is a lever?

Back

A lever is a simple machine that consists of a rigid bar that pivots around a fixed point called the fulcrum. It is used to lift or move loads.

Front

What is an inclined plane?

Back

An inclined plane is a flat surface that is tilted at an angle to help raise or lower objects with less effort.

Front

What is a wedge?

Back

A wedge is a simple machine that is used to split, cut, or separate objects. It has a thick end and a thin edge.

Front

What is a screw?

Back

A screw is a simple machine that converts rotational motion into linear motion. It consists of a cylindrical shaft with a helical ridge (thread) around it.

Front

What is a pulley?

Back

A pulley is a simple machine that consists of a wheel on an axle or shaft that is designed to support movement and change the direction of force.

Front

How does a wheel and axle work?

Back

A wheel and axle is a simple machine that consists of a larger wheel attached to a smaller axle. When the wheel turns, it moves the axle, making it easier to move heavy loads.

Front

What is the purpose of simple machines?

Back

The purpose of simple machines is to make work easier by allowing us to apply less force over a greater distance.

Front

Give an example of a lever in everyday life.

Back

A common example of a lever is a seesaw or a crowbar.