Simple Machines

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What are simple machines?

Back

Simple machines are basic mechanical devices that help make work easier by allowing us to apply force in a more effective way. They include the lever, wheel and axle, pulley, inclined plane, screw, and wedge.

Tags

NGSS.MS-PS2-2

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 with less effort.

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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. When the wheel turns, the axle turns as well, allowing for easier movement of objects.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Front

What is a pulley?

Back

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

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

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. It reduces the amount of force needed to lift an object.

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What is a wedge?

Back

A wedge is a simple machine that is used to split, cut, or separate objects. It consists of two inclined planes joined back to back.

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What is a screw?

Back

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

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What is mechanical advantage?

Back

Mechanical advantage is a measure of the force amplification achieved by using a tool, mechanical device, or machine system. It is the ratio of the output force to the input force.

Tags

NGSS.MS-PS2-2

Front

How do compound machines work?

Back

Compound machines are made up of two or more simple machines working together to make work easier and increase mechanical advantage.

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What simple machines are used in scissors?

Back

Scissors use a wedge and a lever as their simple machines.