Multiple choice

The atmospheric layer farthest form the earth's surface is known as:

  1. Exosphere

  2. Ionosphere

  3. Mesophere

  4. Stratosphere

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

The exosphere is the outermost layer of Earth's atmosphere, extending from about 500 km altitude to the edge of space. It is followed inward by the thermosphere, mesosphere, stratosphere, and troposphere (lowest).