EDUCATION: URBANMAAP

Aerosols Study: Training Quiz

Check your knowledge of aerosols and the sunphotometer by answering the following questions:

Aerosols

1. What are aerosols?
2. What are natural sources of aerosols?
3. What are human (anthropogenic) sources of aerosols?
4. What is happening in the atmosphere to create a hazy day?
5. How can aerosols potentially influence human health?
6. What does a sunphotometer measure?
7. What is optical depth?

Sunphotometer

1. When is the air mass the smallest?

a) sunrise

b) 7 AM

c) 9 AM

d) noon

e) sunset

2. What changes with airmass?

a) time of day

b) the path length that the sunlight travels through the atmosphere?

c) amount of scattering

d) solar elevation angle

e) all of the above

3. When is the air mass changing the fastest?

a) 7-9 AM

b) 11 AM - 1 PM

c) 5 - 7 PM

d) both a and c

e) all of the above

4. What is a reasonable dark current reading?

a) 1 V

b) 2 V

c) 2 mV

d) 13 mV

e) 10 V

5. What is a reasonable sunlight reading?

a) 1 mV

b) 4 mV

c) 13 mV

d) 2 V

e) 10 V

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