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

• Which of the following is NOT a constituent of air (or Earth’s atmosphere)?
• The stratosphere layer is about _____ kilometres thick.
• The unit to measure ozone concentration is
• In which atmosphere layer(s) of the Earth temperature increases with the altitude?
• The increase of temperature with altitude in the stratosphere is due to
• The increase of temperature with altitude in the thermosphere is due to
• The coldest region of the Earth atmosphere is
• The average temperature in the mesopause is about
• Noctilucent clouds, the highest clouds in Earth’s atmosphere, are formed in the
• Cumulonimbus cloud (also known as thunderclouds) are formed in
• In which atmospheric layer meteors burn up when they enter the Earth’s atmosphere?
• The outermost layer of the Earth’s atmosphere is “Exosphere”. It starts at the height of
• The International Space Station orbits the Earth for _____ times per day.
• The “Ozone Layer” lies within the
• The average height of the troposphere is _____ kilometre.
• “Karman Line” is considered the border between the Earth’s atmosphere and outer space. It is at _____ above the sea level.