Grade 4 Pulleys and Gears Review

What is the name for any objects that you lift with a pulley?

• Load

• Input

• Output

• Chain

The type of pulley that changes position is?

• Fixed Pulley

• Movable Pulley

• Compound Pulley

Name the part of a spur that makes other gears turn?

• Input

• Teeth

• Pedals

• Bevel

What type of gear has slanted teeth and turn vertical movement into horizontal movement?

• Bevel

• Spur

• Rack and Pinion Gear

• Helical

Name the input component on a bicycle?

• Wheels

• Load

• Output

• Pedals

How can a pinion tighten the buckle on a pair of skates?

• Using buckles

• A handle moves the pinion

• The pinion moves the rack

• The rack pulls the buckle tight

What are pulleys we use everyday?

• Flag pole

• Fishing rod

• Blinds

• A wheel chair

What is mechanical advantage?

• Makes things more difficult for humans

• The force that is applied to move a load

• The use of gears

How does a gear work?

• A toothed wheel that moves with another toothed wheel

• It can change the speed or direction of motion

• Gears are found in clocks and bicycles

A gear train is...

• More than two gears that are attached together

• One gear that turns

• A pulley