Part A Modified True/False
Indicate whether the sentence or statement is true or false.
If false, change the identified word or phrase to make the sentence
or statement true.
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1. |
The heart is a hydraulic system
because it pumps blood through the arteries and veins.
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2. |
Pneumatic systems are used
in machinery such as air conditioning systems in aircraft and ejection
seats in fighter planes.
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3. |
When the air outside your body is
at a higher pressure than the air in your lungs, the air rushes in.
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Part B Completion
Complete each sentence or statement.
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4. |
____________________ systems use
liquids under pressure to move many things.
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5. |
During scuba diving, a person uses
the buoyancy compensator vest to decrease his/her density and ____________________
his/her buoyancy.
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6. |
A sphygmomanometer measures ____________________.
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7. |
A jackhammer is a ____________________
drill.
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Part C Multiple Choice
Identify the letter of the choice that best completes the
statement or answers the question.
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8. |
If the force of gravity on a diver
is 700 N, what should the buoyant force be if the diver wants to rise
to the surface of the sea?
a. |
0 N |
c. |
equal to 700 N |
b. |
less than 700 N |
d. |
greater than 700 N |
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9. |
Any material carried on ships, submarines,
hot-air balloons, or blimps that acts as weight and alters buoyancy
is called a
a. |
ballad |
c. |
ballot |
b. |
ballast |
d. |
blast |
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10. |
________________ are organisms that
have been introduced, intentionally or unintentionally, to an area where
they are not normally found.
a. |
Abnormal species |
c. |
Native species |
b. |
Exotic species |
d. |
Unnatural species |
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11. |
Which of the following is not
a hydraulic system?
a. |
car braking system |
c. |
hypodermic syringe |
b. |
human heart |
d. |
lungs |
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12. |
Which part of the human respiratory
system acts like a compressor in a pneumatic system?
a. |
valve |
c. |
lungs |
b. |
diaphragm |
d. |
oxygen |
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Part D Short Answer
Use sentences to answer the following questions.
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13. |
How do you make air lighter (less
dense) so that it will cause a balloon to rise?
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14. |
Why is it important to develop a
control for an exotic species that was introduced through dumped ballast
water?
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15. |
How is a pump different from a valve?
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