Complex Machines

What do you call a machine made up of two or more simple machines?

• complicated machine

• complex machine

• constructed machine

Which statement correctly explains a complex machine?

• A complex machine is made up of one or more simple machines

• A complex machine is a tool that consists of a combination of more than one simple machine

An axe is a complex machines. It consists _____________

• wheel and axle

• pulley

• inclined plane

• wedge

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What do we use a machine for?

• To dream about nice things.

• To create new worlds.

• To make a job easier.

• To start a job.

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The picture shows _________

• Simple machine

• Complex machine

Which of the following tools has wedge, wheel and axle?

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• 
• 
• 

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Which of these tools has gear?

• 
• 
• 
• 

Which of the following simple machines can be found in this complex machine?

• Screw and wedge

• pulley and wedge

• Screw and inclined plane

This complex machine has a pulley.

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• 
• 
• 

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NGSS.MS-PS2-1

A wheelbarrow is an example of a complex machine. Which simple machine is NOT found in this object?

• lever

• wedge

• wheel and axle

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