Quarter 1 Exam / Midterm PART 2 Question Preview (ID: 32617)


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Which of the following is not an air pollutant as given in your text?
a) carbon dioxide
b) ozone
c) chlorine
d)

Is the air cleaner today or was it cleaner 30 years ago?
a) today
b) 30 years ago
c)
d)

Will sweating help cool you down when the humidity is 100%?
a) yes
b) no
c)
d)

What gas makes up the majority of the air we inhale?
a) oxygen
b) nitrogen
c) hydrogen
d) carbon dioxide

What gas makes up the majority of the air we exhale?
a) oxygen
b) nitrogen
c) carbon dioxide
d) helium

Dry air is _________% nitrogen and _________% oxygen.
a) 75% nitrogen and 24% oxygen
b) 21% nitrogen and 78% oxygen
c) 78% nitrogen and 21% oxygen
d) 24% nitrogen and 75% oxygen

Why is it important to have ozone in earth’s air?
a) Helps us breathe
b) it helps us get a good tan
c) It blocks UV rays
d) it mixes with carbon monoxide and is no longer poisonous

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 freezing temperatures
b) We would all die because of extremely hot temperatures
c) Life would be improved because greenhouse gases are poisonous.
d) Life would be improved because greenhouse gases improve lung health.

95% helium, 4% hydrogen, and 1% other.
a) heterosphere
b) homosphere
c)
d)

21% oxygen, 78% nitrogen, and 1% other.
a) heterosphere
b) homosphere
c)
d)

Which of the following is not a region of the homosphere?
a) thermosphere
b) troposphere
c) stratosphere
d) mesosphere

If you want to study weather, which region of the atmosphere would you study?
a) mesosphere
b) troposphere
c) stratosphere
d) none of these

On a cold night, what makes you shiver?
a) the cold in the air
b) the high humidity
c) the loss of heat
d) the low humidity

Dry air is 78% oxygen.
a) true
b) false
c)
d)

Ozone is both a poison gas and critically important to survival of life on earth
a) true
b) false
c)
d)

A decrease in the amount of carbon dioxide in the atmosphere would increase the Earth’s temperature.
a) true
b) false
c)
d)

For good health, we should decrease the concentration of ground-level ozone
a) true
b) false
c)
d)

The average global temperature is increasing at an alarming rate.
a) true
b) false
c)
d)

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