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Free Exam: Atmosphere- Post

Number of Questions in Test: 9
Number of Questions in Preview: 5
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Question 1

I am the layer that provides the highest SPF (sun protection factor) for living things.
NOTE: You must spell answer correctly for credit.

Type: Free text
Points: 1

Question 2

I am the layer where artificial satellites orbit the earth.
NOTE: You must spell answer correctly for credit.

Type: Free text
Points: 1

Question 3

Within the thermosphere, there is the ionosphere. It helps radio waves travel across the atmosphere by using

Type: Multiple choice
Points: 1
Randomize answers: Yes

Question 4

Why are clouds generally observed to form only in the troposphere?

Type: Multiple choice
Points: 1
Randomize answers: No

Question 5

What is the most abundant gas in the atmosphere?

Type: Multiple choice
Points: 1
Randomize answers: Yes

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