The Earth's atmosphere consists of five main layers - the troposphere, stratosphere, mesosphere, thermosphere, and exosphere. The troposphere is the lowest layer and contains nearly all air and weather. Above the troposphere is the stratosphere, where temperature increases and contains the ozone layer. The mesosphere is the coldest layer and where most meteors burn up upon entering. The thermosphere is the second highest layer with extremely high temperatures, and the International Space Station orbits within this layer. The exosphere is the outermost layer but has no clear boundary with outer space.

1. The Layers of the Earth’sThe Layers of the Earth’s
AtmosphereAtmosphere
Atmosphere Song.mp4Atmosphere Song.mp4

2. EXOSPHERE
THERMOSPHER
E
MESOSPHERE
STRATOSPHE
RE
TROPOSPHER
E

3. The AtmosphereThe Atmosphere
• The atmosphere consists of layers of air
that surround the Earth. Some of the “air”
is oxygen, which we breathe, but there are
also many other gasses, dust particles,
and even some water vapor mixed into the
air.

4. TROPOSPHER
E
The troposphere is the layer closest to the surface of
Earth. Nearly all life and all weather occur in this layer.
The air thins in this layer and is denser than in other
layers. In this layer, the higher up from Earth’s surface
you go, the colder it gets. The peak of Mt. Everest is
near the top of this layer.

5. STRATOSPHER
E
The temperature in this layer becomes
warmer. The air is thinner and drier
than in the previous layer.

6. MESOSPHER
E
The mesosphere is the coldest layer of the atmosphere.
When meteoroids from space enter our atmosphere, this is
the layer in which they usually burn up. That might be
surprising because it’s a pretty thin layer.

7. THERMOSPHER
E
Temperatures in the thermosphere are very
high, more that 2000 degrees Fahrenheit. This
is where space begins. The International Space
Station orbits Earth in this layer.

8. EXOSPHER
E
The exosphere is the outermost layer of Earth’s
atmosphere but there is no exact dividing line
between this layer and space.

9. This concludes the notes for theThis concludes the notes for the
Layers of the Earth’s Atmosphere!!Layers of the Earth’s Atmosphere!!

10. Layers of theLayers of the
AtmosphereAtmosphere
The four layers of the
atmosphere include:
1. the troposphere, where we
live;
2. the stratosphere, which
contains the ozone layer;
3. the mesosphere, where
meteors burn; and
4. the thermosphere, where
satellites orbit Earth.