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, inclined planes, screws, wedges, and wheel and axles.

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

Front

What are the six types of simple machines?

Back

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

Front

How does a lever work?

Back

A lever consists of a rigid bar that pivots around a fixed point called the fulcrum. It can amplify force or change the direction of force applied.

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What is the function of a wheel and axle?

Back

A wheel and axle is a simple machine that consists of a larger wheel attached to a smaller axle. It reduces friction and makes it easier to move or lift loads.

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NGSS.MS-PS2-1

Front

What is an inclined plane?

Back

An inclined plane is a flat surface that is tilted at an angle to the horizontal. It allows heavy objects to be raised with less effort by spreading the work over a longer distance.

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What is a wedge?

Back

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

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What is a screw?

Back

A screw is a simple machine that consists of a spiral inclined plane wrapped around a cylinder. It converts rotational motion into linear motion and is used to hold objects together or lift materials.

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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.

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NGSS.MS-ETS1-2

Front

What is a compound machine?

Back

A compound machine is a device that combines two or more simple machines to perform work more efficiently and increase mechanical advantage.

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Front

How does a can opener function as a compound machine?

Back

A can opener uses a wedge (to pierce the can), a lever (to apply force), and a wheel and axle (to turn the cutting mechanism) to open cans.

Tags

NGSS.MS-PS2-1