This molecule is in both clean air and polluted air because of its concentration (ppm).

CO2

Cl

C

O2

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Question 2

2 pts

Why is O3 important to life on Earth?

absorbs UVA rays

absorbs UVB rays

reflects UVC rays

absorbs UVC rays

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Question 3

2 pts

The SI unit for energy is:

KE

PE

J

G

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Question 4

2 pts

Heat and temperature are the same.

only when discussing air pollution

false

only when discussing ambient air

true

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Question 5

2 pts

Chemical bonds:

capture energy when formed

store E as PE

all choices are correct

release E when broken

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Question 6

2 pts

Oxygen radicals are formed when:

CFCs stay in the troposphere

UVA rays are absorbed

O3 is formed

ozone is broken down

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Question 7

2 pts

What does the AQI tell us?

the relative amount and type of outdoor air pollutant that is in our area that day

none of these

how fast you will get a sunburn

air visibility

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Question 8

2 pts

Which air pollutant contributes to adverse health effects?

CO

Rn

nicotine

all choices are correct

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Question 9

3 pts

How can you personally reduce air pollution in your house/apartment/dorm room?

no furry pets

all choices are correct

take your shoes off when entering

have indoor house plants

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Question 10

2 pts

How does Penn State reduce indoor air pollution?

redecorate with new carpets

keep windows closed

no cigarette smoking indoors

no air filtration or conditioning

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Question 11

2 pts

Which type of radiation has been shown to contribute to skin cancer?

infrared

UVC

UVB

visible light

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Question 12

2 pts

Which element ‘glows’ under UV light?

P

F

Ph

C

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