L3 Units 11 and 12 Review

Please choose the correct image for a spray bottle.

• 
• 
• 
• 

This is a...

• nozzle

• spring

• bottle

• trigger

This is a...

• spring

• piston

• 
  trigger

• valve

This is a...

• valve

• bottle

• spring

• tube

This is a...

• pump

• spray bottle

• piston pump

• water pump

This is a...

• piston

• shaft

• motor

• valve

This is an...

• inlet valve

• inlet pipe

• outlet valve

• outlet pipe

This is a...

• piston

• motor

• pipe

• shaft

Please read and choose the correct option.

The motor makes the shaft ___.

• to move

• move

Please read and choose the correct option.

When the piston moves in, it causes the water pressure ___.

• increase

• to increase