Levers and Gears

What is a lever?

• A simple machine used to lift or move loads

• A type of pulley

• A wheel that spins

• A tool that makes things heavier

Which of these is a part of a lever? Select all relevant answers

• Load

• Fulcrum

• Gear

• Effort

In a first-class lever the fulcrum is located _______ the load and the effort

Which of these is an example of a first-class lever?

• 
• 
• 
• 

In a second-class lever, what is in the middle?

• Effort

• Spring

• Fulcrum

• Load

Which of these is an example of a second-class lever?

• Nutcracker

• Tongs

• Fishing rod
  

• Knife

This is an example of a _____ class lever

In a third-class lever, what is in the middle?

• Gear

• Load

• Effort

• Fulcrum

What class of lever is your arm when lifting a weight?

• First

• Second

• Third

• It’s not a lever

Which of these are examples of types of gears?

• Spur

• Bevel

• Worm

• Rock and Roll