GRADE 4- "SIMPLE MACHINES"

Front

What is a simple machine?

Back

A simple machine is a device that makes work easier by allowing us to push or pull in a more efficient way.

Front

Name the six types of simple machines.

Back

The six types of simple machines are lever, pulley, inclined plane, wheel and axle, screw, and wedge.

Front

What is a lever?

Back

A lever is a bar that pivots on a point called a fulcrum, used to lift or move loads.

Front

What is a fulcrum?

Back

A fulcrum is the point on which a lever rests and pivots.

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

What is an inclined plane?

Back

An inclined plane is a flat surface that is tilted at an angle to help lift objects more easily.

Front

What is a wheel and axle?

Back

A wheel and axle is a simple machine that consists of a larger wheel attached to a smaller axle, allowing for easier movement.

Front

What is a screw?

Back

A screw is a simple machine that is an inclined plane wrapped around a cylinder, used to hold things together or lift materials.

Front

What is a wedge?

Back

A wedge is a simple machine that is a piece of material with a sharp edge, used to split or cut objects apart.

Front

What type of simple machine is a rake?

Back

A rake is a lever.