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MIDTERM Review - Semester 1 - Physical Science - Part 2
Test Description: MIDTERM review
Instructions: Answer all questions to get your test result.
1) _____23. Will sweating help cool you down when the humidity is 100%?
A
Yes
B
No
2) What gas makes up the majority of the air we inhale?
A
Carbon Dioxide
B
Oxygen
C
Nitrogen
3) What gas makes up the majority of the air we exhale?
A
Nitrogen
B
Oxygen
C
Carbon Dioxide
4) Dry air is _________% nitrogen and _________% oxygen.
A
78% nitrogen and 21% oxygen
B
75% nitrogen and 24% oxygen
C
24% nitrogen and 75% oxygen
D
21% nitrogen and 78% oxygen
5) Why is it important to have ozone in earth’s air?
A
It helps us breathe.
B
It mixes with carbon monoxide so we are not poisoned.
C
It helps us get a good tan.
D
It blocks harmful UV rays from the sun
6) 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 are poisonous.
7) What are the layers of the homosphere in order from bottom to top?
A
Troposphere, stratosphere, mesosphere
B
Troposphere, meosophere, stratosphere
C
stratosphere, troposphere, mesosphere
D
mesosphere, troposphere, stratosphere
8) A liquid that is hot will move ______________than a cold liquid.
A
faster
B
slower
9) Is the ozone hole a problem?
A
Yes, we are going to freeze
B
Yes, there is chlorine in our atmosphere
C
No there isn't anything wrong. Scientists made up everything.
D
No, it only affects antarctica during a few months.
10) Is helium found in the homosphere or heterosphere?
A
Homosphere
B
Heterosphere
*select an answer for all questions
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