Gears and Gear Ratios

What is a gear?

• Stylish Clothes

• A Wheel with teeth that meshes with another gear

• A square with spurs

• A wheel with spurs that acts by itself

Gears are wheels with teeth. Gears mesh together and make things turn. Gears are used to transfer motion or power from one moving part to another.

• True
• False

Why are gears used? (Choose all correct answers)

• To change direction

• To change speed

• To change torque

• To change size

This is largest LEGO gear. What is it called

• 60 tooth gear

• 40 tooth gear

• 36 tooth gear

• 24 tooth gear

This is the smallest LEGO gear. What is it called?

• 12 tooth gear

• 10 tooth gear

• 8 tooth gear

• 6 tooth gear

What does Torque mean?

• Turns

• Flexible

• Strength or Power

• Stable

What is a Driver Gear?

• The gear that applies the force

• The gear that is driven

• The biggest gear

• The smallest gear

What is the Follower Gear?

• The gear that applies the force

• The gear that is driven

• The biggest gear

• The smallest gear

The Driver Gear is attached to the......

• Wheel

• Motor

The Follower Gear is attached to the.....

• Wheel

• Motor