Pulley and Gears Quiz Grade 4 - Mr Patrick

What is a gear?

• A gear is a wheel with a grove on its edge.

• A gear is a wheel with teeth on its edge that interlocks with the teeth of other gears.

• A gear is a wheel which is heart shaped

• All of the above

Which machine does not use a gear system?

• Pencil Sharpener

• Watch

• Treadmill

• Bike

• Water spray bottle

This is a picture of a...

• fixed pulley

• moveable pulley

There are three types of pulleys: fixed, movable, and compound.

• True

• False

What kind of pulley is this? 

• fixed pulley
• block and tackle 
• movable pulley

What kind of pulley system is this? 

• block and tackle pulley
• movable pulley
• fixed pulley

Spur Gears have

• Teeth that go straight up and down when the gear lies flat; can change the speed or direction of motion

• No teeth they just slide into place

• a sloped rim and the gear teeth are also sloped

A Combined Pulley system

• uses two gear systems

• uses both a fixed pulley and movable pulley.

• uses a rack and pinion connection

Which of these machines / devices do not use a pulley system

• Flagpole

• Water well

• Elevator

• Tow Truck

• Can opener

Which of the following is an example of a pulley?

• flag pole

• see saw

• jump rope