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Density & Buoyancy Test

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

 1. 

Which of the following objects will float in water?
a.
a solid iron cube with a volume of 8 cm3
b.
a solid lead cube with a volume of 1 cm3
c.
a solid stone cube with a volume of 9 cm3
d.
a solid wooden cube with a volume of 15 cm3
 

 2. 

A box sinks when placed in water. What could you change about the box to make it float?
a.
density
c.
Archimedes’ principle
b.
atmospheric pressure
d.
temperature
 
 
nar001-1.jpg
Figure 3
 

 3. 

In which direction does the pressure exerted by the water push on the sphere in Figure 3?
a.
upward
c.
to the side
b.
downward
d.
in all directions
 

 4. 

The ____ is a unit of force.
a.
atmosphere
c.
pascal
b.
newton
d.
kilopascal
 

 5. 

Archimedes' Principle helps to explain the relationship between ____.
a.
temperature and density
c.
pressure and density
b.
buoyancy and density
d.
kinetic energy and density
 
 
nar002-1.jpg
Figure 5
 

 6. 

Use the information in Figure 5 to choose the gas that would be the best choice to use to fill a balloon that would float in air.
a.
carbon dioxide
c.
hydrogen
b.
nitrogen
d.
oxygen
 

 7. 

Which is the upward force on an swimmer that balances the downward force of gravity and keeps the swimmer from sinking?
a.
atmospheric pressure
c.
density
b.
buoyant force
d.
pascal
 

 8. 

Density depends on ____.
a.
mass and volume
c.
volume
b.
mass
d.
weight
 

 9. 

Lam has three identical 1-L bottles. One is filled with water, another is filled with air, and the third bottle is filled with soil. What is the same about all three bottles?
a.
weight
c.
density
b.
mass
d.
volume
 

 10. 

A cork is able to float on water because it is ____.
a.
equal in density to water
c.
a crystalline solid
b.
less dense than the water
d.
small in size
 

Completion
Complete each statement.
 

 11. 

The measurement of force per unit area is called ____________________.
 

 

 12. 

The mass of an apple would be measured in ____________________.
 

 

 13. 

To calculate the density of a sample of matter, you must divide its ____________________ by its ____________________.
 

 

 14. 

The ____________________ of water at room temperature is 1 g/cm3.
 

 

 15. 

A twig, a small log, and a tree trunk all float in water because the ____________________ of a material is not affected by the size of the sample.
 

 

 16. 

One way to calculate the mass of an object, is to multiply its density by its ____________________.
 

 

Matching
 
 
Match each item with the correct statement below.
a.
buoyant force
c.
fluid
b.
atmospheric pressure
 

 17. 

101.3 kilopascals
 

 18. 

a description of gases and liquids
 



 
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