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Quarter 1 Exam / Midterm PART 2
Test Description: Review
Instructions: Answer all questions to get your test result.
1) Which of the following is not an air pollutant as given in your text?
A
carbon dioxide
B
chlorine
C
ozone
2) Is the air cleaner today or was it cleaner 30 years ago?
A
today
B
30 years ago
3) Will sweating help cool you down when the humidity is 100%?
A
yes
B
no
4) What gas makes up the majority of the air we inhale?
A
hydrogen
B
oxygen
C
carbon dioxide
D
nitrogen
5) What gas makes up the majority of the air we exhale?
A
carbon dioxide
B
oxygen
C
nitrogen
D
helium
6) Dry air is _________% nitrogen and _________% oxygen.
A
21% nitrogen and 78% oxygen
B
75% nitrogen and 24% oxygen
C
24% nitrogen and 75% oxygen
D
78% nitrogen and 21% oxygen
7) Why is it important to have ozone in earth’s air?
A
it helps us get a good tan
B
Helps us breathe
C
It blocks UV rays
D
it mixes with carbon monoxide and is no longer poisonous
8) What would happen to life on the earth if all the greenhouse gases such as carbon dioxide were removed and why?
A
We would all die because of extremely hot temperatures
B
We would all die because of freezing temperatures
C
Life would be improved because greenhouse gases improve lung health.
D
Life would be improved because greenhouse gases are poisonous.
9) 95% helium, 4% hydrogen, and 1% other.
A
heterosphere
B
homosphere
10) 21% oxygen, 78% nitrogen, and 1% other.
A
heterosphere
B
homosphere
11) Which of the following is not a region of the homosphere?
A
thermosphere
B
stratosphere
C
troposphere
D
mesosphere
12) If you want to study weather, which region of the atmosphere would you study?
A
troposphere
B
mesosphere
C
none of these
D
stratosphere
13) On a cold night, what makes you shiver?
A
the cold in the air
B
the loss of heat
C
the high humidity
D
the low humidity
14) Dry air is 78% oxygen.
A
true
B
false
15) Ozone is both a poison gas and critically important to survival of life on earth
A
false
B
true
16) A decrease in the amount of carbon dioxide in the atmosphere would increase the Earth’s temperature.
A
true
B
false
17) For good health, we should decrease the concentration of ground-level ozone
A
true
B
false
18) The average global temperature is increasing at an alarming rate.
A
false
B
true
*select an answer for all questions
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