Atmosphere MCQs Quiz Test Questions with Answers

Atmosphere | Environment | Meteorology

Atmosphere (or Air) related Multiple Choice Questions (MCQs). Earth’s atmosphere and the 5 layers of the Earth’s atmosphere quiz.

Atmosphere MCQs

1. The 99% of the Earth’s atmosphere consists of
(A) Oxygen
(B) Nitrogen
(C) Oxygen and Nitrogen
(D) Nitrogen and Water

2. By volume, Earth’s atmosphere (or air) contains about _____% of Nitrogen and _____% of Oxygen.
(A) 78,   21
(B) 21,   78
(C) 70,   25
(D) 25,   70

3. The lowest layer of Earth’s atmosphere (the closest to the surface of the Earth) is
(A) thermosphere
(B) troposphere
(C) stratosphere
(D) mesosphere

ANSWERS: ATMOSPHERE MCQS
1. (C) Oxygen and Nitrogen
2. (A) 78,   21
3. (B) troposphere

Atmosphere MCQs