Question

Which of the following are characteristics of the mesosphere?

1. It is the highest layer of the Earth's atmosphere.
2. Temperatures decrease with altitude in the mesosphere.
3. It is the layer where most meteors burn up upon entering the Earth's atmosphere.
4. The mesosphere is the layer where ozone is primarily concentrated.
5. Airglow phenomena is observed in the mesosphere.

• A. ii, v
• B. i, iv
• C. ii, iii, v
• D. ii, iv

Answer 1

Answer:

C. ii, iii, v

Mesosphere

• The mesosphere is the third highest layer of the Earth's atmosphere, located above the stratosphere and below the thermosphere.
• It extends from about 50 kilometers (31 miles) to 85 kilometers (53 miles) above the Earth's surface.
• It is the coldest of the atmospheric layers.
• Temperatures in the mesosphere decrease with altitude, reaching as low as -100 degrees Celsius (-148 degrees Fahrenheit).
• This layer is known for its crucial role in the phenomenon of meteor trails or "shooting stars," as it is the region where most meteors burn up upon entering the Earth's atmosphere.
• The mesosphere is also characterized by the presence of various layers of airglow, which are faint emissions of light caused by chemical reactions in the atmosphere.