1. Layers of the Atmosphere

2. Atmospheric Temperature vs. Altitude
120
110
100 80 70 60 50 40 30 20 10 90
-120
-100
-80
-60
-40
-20
THERMOSPHERE
Mesopause
MESOPHERE
Stratopause
STRATOSPHERE
Tropopause
TROPOSPHERE
Height above ground (kilometers)
COLDER
WARMER
The atmosphere is divided into layers based on temperature.
Makes no sense without caption in book

3. extends up to 10km
contains 99% of the water vapor
75% of the atmospheric gases
contains most clouds and half of the Earth's atmosphere.
Weather occurs in this layer.
Most of the layer’s heat is from Earth
Temperature cools as you move up through the troposphere

4. STRATOSPHERE Stratosphere – directly above troposphere
extending from 10 km to about 50 km above Earth’s surface
Many jet aircrafts fly in the stratosphere because it is very stable.
Portion of the upper layer contains high levels of a gas called ozone

5. The Ozone Layer (part of the Stratosphere)
O3 molecules that protect the Earth from the Sun’s harmful ultraviolet radiation
Life depends on the ozone!
Pollutants called chlorofluorocarbons (CFCs) destroy ozone
CFCs are used in refrigerators, air conditioners, aerosol sprays, and foam packaging
Ozone layer has a large hole over Antarctica and a smaller one over the North Pole

6. Mesosphere – extends from the top of the stratosphere to about 85 km above Earth
Coldest layer with little ozone
Meteors or rock fragments burn up in the mesosphere

7. THERMOSPHERE J
Thermosphere – thickest atmospheric layer found between 85 km and 500 km above Earth’s surface
The thermosphere is a layer with auroras, known for its high temperatures.
Warms as it filters out X-rays and gamma rays from the Sun
Made of two parts – the IONOSPHERE, which helps carry radio waves and the EXOSPHERE

8. EXOSPHERE
Exosphere - The atmosphere merges into space in the extremely thin exosphere. This is the upper limit of our atmosphere.
Outer layer where the ISS orbits.

9. https://youtu.be/3CerJbZ-dm0
Layers of Atmosphere