4. TROPOSPHERE
Lowest portion of earth’s atmosphere
75% of the entire atmosphere mass
-WaterVapor
- Aerosols
0 km – 10 km Depth ~ 10 km
Warmer nearest earth
Colder the further you go
Travel Back to the Atmosphere
5. STRATOSPHERE
Second layer of earth’s atmosphere
10 km – 50 km Depth ~ 40 km
Colder nearer the earth surface
Warmer the further into the atmosphere
Energy is transferred via heat absorption
by the ozone layer.
Heating caused by conduction from
above and convection from below.
Travel Back to the Atmosphere
6. MESOSPHERE
Middle layer of earth’s atmosphere
50 km – 90 km Depth ~ 40 km
Warmer closer to earth’s surface
Colder the further you out you go
This is where meteors burn as they
collide with gas particles
Most poorly understood part of the
atmosphere
Travel back to the Atmosphere
7. THERMOSPHERE
4th layer of earth’s atmosphere
80 km – 500 km Depth ~ 420 km
Colder near earth’s surface
Warmer as you go further into
thermosphere
This layer absorbs radiation which in
turn electrically charge particles.
Travel back to the Atmosphere
8. EXOSPHERE
Outer layer of the atmosphere
500 km – 10,000 km Depth ~ 9,500 km
Only layer of atmosphere where gases can
escape
Main gases found here:
- Hydrogen
- Helium
- Carbon Dioxide
Travel Back to the Atmosphere
10. KEYTERMS
Condensation - process by which gas or vapor changes into a
liquid or solid
Evaporation - the process by which a liquid changes into a gas
Convection - upward movement of heat or other atmospheric
properties within the atmosphere
Photosynthesis – the synthesis of complex organic materials
from carbon dioxide, water, and inorganic salts using light as an
energy source
Radiation – energy that is transmitted in the form of rays
Conduction – spontaneous transfer of energy through matter,
from a region of higher temperature to a region of lower
temperature
11. GASES
CO2 - Carbon Dioxide
MH4 - Methane
O2 – Oxygen Gas
O3 - Ozone
N2 – Nitrogen Gas
Ar – Argon Gas
H2 – Hydrogen Gas
He - Helium
12. INCREASE IN CO2
Increased by the burning of fossil fuels- coal, oil, and
gas
Too much is harmful to our planet
Creates a cycle of
Carbon Dioxide
within our atmosphere
Contributes to the
hole in the ozone
layer
15. OZONE LAYER
Three oxygen atoms bonded together
Forms a layer above earth that protects us from harmful UVA
UVB rays
The ozone hole is a depletion of the ozone in the atmosphere.
19. QUIZ
1. What is the first atmospheric layer closest to earth?
2. What is the largest atmospheric layer?
3. Define a key term (condensation, evaporation, photosynthesis,
radiation, conduction, convection)
4. What gas is CO2?
5. What is one cause of an increase in CO2?
6. Does CO2 exist in oceans?
7. Which two layers of earth’s atmosphere does the ozone layer exist?
8. What are two things that are causing the thinning of the ozone?
9. What is an effect of GlobalWarming?
