Multiple choice

The region of atmosphere above troposphere is known as

  1. ionosphere

  2. mesosphere

  3. stratosphere

  4. thermosphere

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The atmospheric layers in order from Earth's surface upward are: troposphere (0-12 km), stratosphere (12-50 km), mesosphere (50-85 km), thermosphere (85-600 km), and exosphere. The stratosphere immediately above the troposphere contains the ozone layer and is where jets fly.