Question

The coldest layer of Earth’s atmosphere is the __________.
a.
troposphere
c.
mesosphere
b.
stratosphere
d.
thermosphere

Answer 1

mesosphere

Answer 2

mesosphere because it is the highest and closest to the cold space.

Answer 3

The atmosphere is divided into five layers. It is thickest near the surface and thins out with height until it eventually merges with space.

1) The troposphere is the first layer above the surface and contains half of the Earth's atmosphere. Weather occurs in this layer.
2) Many jet aircrafts fly in the stratosphere because it is very stable. Also, the ozone layer absorbs harmful rays from the Sun.
3) Meteors or rock fragments burn up in the mesosphere.
4) The thermosphere is a layer with auroras. It is also where the space shuttle orbits.
5) The atmosphere merges into space in the extremely thin exosphere. This is the upper limit of our atmosphere.

The Mesosphere is the coldest layer. Temperatures are as low as -90oC (-130oF). Although the air is thin, it is still thick enough to burn up meteors.