Gears | Design and technology | Quizalize & Oak National Academy

Starter quiz

Match the description to the type of motion:
- rotary
  
  ⇔
  
  motion in a circle ✓
- linear
  
  ⇔
  
  motion one way in a straight line ✓
- reciprocating
  
  ⇔
  
  motion backwards and forwards in a straight line ✓
- oscillating
  
  ⇔
  
  motion in an arc ✓
Imagine both spanners are moving at the same speed. Which statements are correct about the larger spanner on the right?
- It completes a full turn more quickly than the smaller spanner.
- It completes a full turn more slowly than the smaller spanner. ✓
- It has further to travel than the smaller spanner to complete a full turn. ✓
- It has less distance to travel than the smaller spanner to complete a full turn.
What do you use on a bike to support your speed on different terrains?
- gears ✓
- pedals
- wheels
Match the statements to the description:
- driver pulley wheel
  
  ⇔
  
  provides the input motion ✓
- driven pulley wheel
  
  ⇔
  
  provides the output motion ✓
- belt
  
  ⇔
  
  transfers the motion ✓
Decreasing the size of the driven pulley wheel (right) in comparison to the driver pulley wheel (left) has what effect on the output:
- decreases the speed
- increases the speed ✓
- makes no difference
What is friction?
- A force that helps objects move faster.
- A resistance encountered when two surfaces rub together. ✓
- A material used to reduce wear on surfaces.
- A type of energy that powers machines.

Which statements are true about a gear?
- It is a toothed wheel. ✓
- It normally connects to another gear. ✓
- It rotates to move. ✓
- It has a belt.
- It is a grooved wheel.
Imagine the large gear on the left is the driver gear. What is another name for the small gear in the middle?
- 'Idler gear' ✓
A canal lock is an example of a rack and pinion mechanism. It uses a gear to change rotary motion to ______ motion on a rack.
- 'linear' ✓
Which statement is correct? Driver gear (left), driven gear (right).
- Increasing the size of the driven gear, increases the output speed.
- Decreasing the size of the driven gear, increases the output speed. ✓
- Increasing the size of driver gear, increases the output speed. ✓
- Decreasing the size of driver gear, increases the output speed.
Bevel gears transmit rotary motion through __________ degrees.
- 45
- 180
- 90 ✓
Match the type of gear to the example.
- rack and pinion
  
  ⇔
  
  opening and closing a canal lock ✓
- bevel gear
  
  ⇔
  
  manual hand drill ✓
- chain and sprocket
  
  ⇔
  
  bike gears ✓
- rack and pinion
  
  ⇔
  
  raising the heavy table on a pillar drill ✓
- bevel gear
  
  ⇔
  
  hand held manual food mixer ✓

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Increasing the size of the driven gear, increases the output speed.

Decreasing the size of the driven gear (or increasing the size of driver gear), increases the speed of the driven gear.

Gear - a toothed wheel that normally connects to another gear
Driver gear - provides the input movement
Driven gear - provides the output movement
Gear ratio - shows how one gear's speed or force affects another's
Rack and pinion - uses a gear to change rotary motion to linear motion on a rack