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Earth's Atmosphere

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Ann Gamboa

on 2 December 2014

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Transcript of Earth's Atmosphere

photo credit Nasa / Goddard Space Flight Center / Reto Stöckli
Chapter 11 Atmosphere
Atmospheric Composition
Structure of The Atmosphere
78% Nitrogen
21% Oxygen
.03% Carbon Dioxide
.0 to 4.0% water vapor
.93% Argon
.01% Trace gases
Blanket of gases surrounding Earth that is composed of various gases
A gas, formed by the addition of a third oxygen atom to an oxygen molecule, that exists in a layer in the atmosphere and adsorbs ultraviolet radiation from the Sun; the major chemical in smog.
Transfer of energy by the flow of a heated substance
Energy transfer that occurs when molecules collide; takes place only when substances are in contact with each other.
Outermost layer of Earth's atmosphere that is located above the thermosphere and contains light gases such as helium and hydrogen.
Layer of Earth's atmosphere that is located above the mesopause and contains only a minute portion of the atmosphere's mass
Layer of Earth's atmosphere above the stratopause.
Layer of Earth's atmosphere that is located above the tropopause and is made up primarily of concentrated ozone.
Layer of the atmosphere closest to Earth's surface, where most of the mass of the atmosphere is found and in which most weather takes place and air pollution collects.
Development of Earth's Atmosphere
4.6 BYA
1st 500 MY
Out gassing-Volcanic Eruptions
3.5 BYA
Primitive Life- Photosynthesis
~570 MYA-present day ATM
Weather is the condition of the atmosphere in terms of heat, pressure,wind and moisture.
Climate is weather over a long period of time.
We live at the bottom of a sea of air.
Cools with increasing elevation
Over the course of a yr, Earth sends back into space just about as much energy as it receives from the sun.
The Sun is the source of all energy in the atmosphere and this energy is transferred to Earth in three ways.
Radiation is the transfer of energy through space by visible light, UV radiation, and other forms of electromagnetic waves.
Earth's Atmosphere
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