Name: 
 

LAB: Can Crusher Lab



True/False
Indicate whether the sentence or statement is true or false.
 

 1. 

The ONLY reason we add water to cover the bottom of the aluminum can is to keep it from melting.
 

 2. 

When the can is turned upside down into the water trough the can collapses because of suction.
 

 3. 

Boiling water in the can fills the can with water vapor and pushes air out of the can.
 

 4. 

Turning the can upside down and plunging it into the water cools the can and the water vapor inside. This causes the water vapor (a gas) to condense back into liquid water taking up much less space. This dramatically reduces pressure inside the can.
 

 5. 

A given volume of water when evaporated takes up 4600 times as much space as the original volume of water
 

 6. 

This can crusher lab would work just as well if no water was placed in the bottom of the aluminum can.
 

 7. 

When cooled, gases contract in volume.
 

 8. 

When heated, gases contract in volume.
 

 9. 

A can is crushed when the pressure inside the can is greater than the pressure outside the can.
 

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

 10. 

A fully inflated basketball taken outside on a cold day will seem less bouncy because...
a.
it gets stiff outside in the cold.
c.
the cold ground is not as resilient as the indoor floor.
b.
there is less moisture in colder air.
d.
the colder temperature decreases pressure inside the ball.
 

 11. 

When the can is turned upside down and plunged into the water trough it collapses because
a.
the sides of the can get sucked in.
c.
the rapid temperature change weakens the walls of the can.
b.
air outside the can pushes the sides in.
d.
density is greater inside the can.
 

 12. 

In this lab water is placed in the bottom of the aluminum can to
a.
to cool the can.
c.
create water vapor which expands 1517 times in volume over liquid water.
b.
moderate the temperature inside the can.
d.
keep the can from melting.
 

 13. 

The aluminum can is turned upside down into a water trough because
a.
it plugs the hole and cools the gases inside quickly.
c.
its needed to keep the high pressure sealed inside the can.
b.
it keeps the can from melting.
d.
outside air will enter the can.
 

 14. 

Besides being able to boil the water, the amount of heat used underneath the can
a.
matters
c.
should not be too hot
b.
does not matter
d.
should not be too cool
 

Matching
 
 
cancrusher_files/i0180000.jpgChoose the correct letter.
 

 15. 

Low pressure
 

 16. 

High pressure
 

 17. 

Water trough container
 

 18. 

Water
 

 19. 

High density gas
 

 20. 

Low density gas
 
 
cancrusher_files/i0250000.jpgChoose the correct letter.
 

 21. 

Aluminum can -- normal pressure
 

 22. 

Air in classroom -- normal pressure
 

 23. 

Escaping air & water vapor
 

 24. 

Evaporation
 

 25. 

Boiling water
 



 
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