Download - Intro to the Atmosphere. Weather: General condition of the atmosphere at a particular time and place
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Intro to the Atmosphere
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Weather:General condition of the
atmosphere at a particular time and place.
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Climate:General weather conditions
over many years.
What was the high temperature
in January?A)71
B)25
C)20
D) 1SMART Response QuestionTo set the properties right click and selectSMART Response Question Object->Properties...
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Weather versus Climate
Weather Climate
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ATMOSPHERICComposition
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MIXTURE OF GASES
COMPOSITIONMajor
1- 78% Nitrogen N2
2- 21% Oxygen O2
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• Oxygen removed from atmosphere by: (6 ways)
living things
burning
weathering of rocks
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Question
The Most abundant gas in Earth’s atmosphere is?
Nitrogen
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Oxygen added to atmosphere by one way!
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Minor but very important3- .93% Argon Ar4-.03% Carbon dioxide CO2
5-0-.04% water vapor H2O
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TRACE ELEMENTS
Ne neon He helium
H2 hydrogen
Kr kryptonXe xenon
O3 OZONE- protects us from harmful ultraviolet light
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Minor but very important: .07 %
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Atmospheric dust: known as "particulates," although the total suspended particulate matter found in the atmosphere can be both solid particles or liquid droplets.
Added:
Soil blown by wind
Ash from fires
Volcanoes
Micro organisms
Important:
Needed for cloud formation
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Nitrogen activity (cycle)
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LAYERS OF THE ATMOSPHERE
CLASSIFIED BY TEMPERATURE DIFFERENCES
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1. TROPOSPHERETROPOSPHERE
-greatest air pressure
-all clouds and weather
-jet stream lies at the top
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2. STRATOSPHERE
Airplanes fly here (try to)
little temperature change
has the greatest concentration of the OZONE
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question
Where in our atmosphere does weather occur?
Troposphere!!!
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3. MESOSPHERE
Coldest layer
meteors burn up here
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4. THERMOSPHERE(ionosphere)
“Hottest” layerfewest air particlescontains the ionosphere
a layer of charged particlesreflects radio waves around the
worldhelps to produce the
auroras(northern lights)
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Air pressure- weight of the atmosphere
1. Caused by gravity
2. 14.7 lbs/ sq.in at sea level
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Solar Energy and your atmosphere
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Electromagnetic spectrum: Complete range of wavelengths.
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Question: In order for electromagnetic waves (EM) to
reach the Earth’s surface what must it travel through first?
a)Earth’s Geosphere
b)Earth’s Hydrosphere
c) Earth’s Atmosphere
d)Earth’s Asthenosphere
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Em waves path to Earth:
Nitrogen and Oxygen absorb short wave lengths.
X-rays
Gamma rays
Occurs in Thermosphere and Mesosphere
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Scattering: water droplets and dust bend rays
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Pair-share
Why is the sky blue?
a)Because most of the earth is water so it reflects the blue color
b)Scattering of blue wavelengths by water and dust
c) Reflection of blue wavelengths from blue surfaces such as our oceans
d)It is the color of our atmosphere reflected down from the suns rays
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Albedo: the fraction of solar radiation reflected by a particular substance.
20% absorbed
By atmosphere
30% reflected
by clouds or Earth’s surface
50% absorbed
by the Earth’s surface
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Greenhouse effect: Not bad! Helps maintain Earth’s temperature.
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Greenhouse factors (write under diagrams)
Natural
Water vapor
Water cycle
Methane CH4
Breaking down dead organisms
Nitrous Oxide N20
Nitrogen cycle
Carbon Dioxide CO2
Carbon cycle
Anthropogenic Water vapor
Over usage/ waste of surface water (steam)
Methane
Burning/ emissions
Nitrous oxide
Chemicals
Carbon dioxide
burning
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Uneven heating: Maritime/Continental
Maritime
Regions near water masses. (coastal regions)
Continental
Regions with large areas of land (mid-west)
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Clicker
Climate change is responsible for warming which layer of Earth’s Atmosphere?
a)Troposphere
b)Mesosphere
c) Stratosphere
d)All of the above
e)None of the above
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In your notes: Describe 3 things that influence temperature.
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Latitude
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Uneven heating: Maritime/Continental
Maritime
Regions near water masses. (coastal regions)
Continental
Regions with large areas of land (mid-west)
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Factors that affect Temperature
Latitude Elevation Maritime Continental
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Solar energy transfer
Radiation
Warms solid objects(conduction)
Warm gases rise from surfaceConvection
Cool gases fall warming the atmosphereConvection
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Explain the delay using your diagram
Daily...the most intense radiation hits Earth at ______pm, but the warmest time is at _______ pm.
Yearly...the most intense radiation hits Earth in _________, but the warmest months are ___________.
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Diagram and label the fate of solar radiation
1st label the layers of the atmosphere
2nd label how each wavelength of the EM spectrum are affected by those layers
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Air pollution Any substance in the atmosphere that is harmful to
living organisms or to property.
Sulfur dioxide
Carbon monoxide
Lead
Hydrocarbons
Burning coal