Unit 11: Making Work Easier, Revision

When you use a simple machine you use_________force.

• Less

• More

All simple machines make work______________.

• Harder

• Easier

This picture shows a ________________.

• Lever

• Wedge

• Pulley

• Wheel and axle

In this picture, the man is applying effort to:

• Push the fridge up

• Pull the fridge down

• Move the truck

Tags

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A wheel is...

• A circular disc that can turn or roll

• Any shape that can turn, like a triangle

• A flat shape that hovers

• A small, rigid rod that can turn

Tags

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What is the point of using a wheel and axle?

• It does more work for more force

• It is shiny and decorative

• It does the same work, but takes less force

• It can be used on any terrain

Tags

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What is friction? 

• when an object moves very quickly 
• the action of one object rubbing against another surface
• when an object  can not move at all 

What force causes the carts to slow down?

• friction
• applying force
• gravity
• gravity and friction

Tags

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The force that makes a roller coaster roll is...?

• Rocket Power
• Gravity
• Motors
• Gears

Tags

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 If a drop is steeper, the roller coaster will go...

• Faster
• Crash
• Slower
• Stop

Tags

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