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S8.D.2.1 Explain how pressure, temperature, moisture, and wind are used to describe atmospheric conditions that affect regional weather or climate. Reference: 3.5.7.
S8.D.2.1.1 Explain the impact of water systems on the local weather or the climate of a region (e.g., lake effect snow, land/ocean breezes).
S8.D.2.1.2 Identify how global patterns of atmospheric movement influence regional weather and climate.
S8.D.2.1.3 Identify how cloud types, wind directions, and barometric pressure changes are associated with weather patterns in different regions of the country.

View Free Brain Pop Tim & Moby for this Unit: http://glencoe.mcgraw-hill.com/sites/007877828x/student_view0/brainpop_movies.html

ATMOSPHERE

CLICK HERE FOR A VIRUAL INTERACTIIVE:http://www.glencoe.com/sites/common_assets/science/virtual_labs/ES14/ES14.html

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The Strong Monkey Throws Elephants

CHECK YOURSELF-THE ATMOSPHERE

1) Make a valid statement about the relationship between the height of the atmosphere vs. the temperature for each of the layers of the atmosphere.
2) Many students erroneously state "the ozone is the atmosphere." Correct that statement so that it is both specific and valid.
3) The o-zone depletion problem is not the same thing as climate change due to the greenhouse effect. Compare and contrast the Ozone depletion issue with the greenhouse effect.
4) Name the several roles that the atmosphere plays in our planet's survival.
5) If the globe is to scale, how think is the atmosphere?
6) What two gasses and in what percentage composition create the troposphere?
7) Explain how and why the "bends" occurs in divers.
8) Draw a quick line graph representing the trend observed when we compare distance above Earth to atmospheric pressure.







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Global Winds Driven Initially by Sun's Uneven Heating of our Planet!!!

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RULES THAT GOVERN GLOBAL ATMOSPHERE & WIND MOVEMENT
1) The global wind system is governed by the fact that the planet is UNEVENLY heated by Sun.
2) Air always moves from where there is HIGH pressure to where there is LOW pressure.



















North American Air Masses

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CLIMATE vs. WEATHER



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CLICK HERE FOR A VIRUAL INTERACTIIVE: http://www.glencoe.com/sites/common_assets/science/virtual_labs/ES16/ES16.html


















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WEATHER

Sect 1) What is weather?

weather: the state of the atmosphere at a specific time & place.

  • Our star, Sun, (though it is 93 million miles away) provides Earth with nearly ALL of its energy!!!

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  • Uneven heating of the Earth by Sun (equator gets more direct sunlight per year than any other latitude line) causes air to rise at the equator. This rising air causes low pressure (books coming off your head) at the equator. That rising air eventually sinks when it moves north or south to the tropics and out into the troposphere where it cools (cool air sinks) and makes a high pressure system. And the cycle continues along the globe.

In summary: the Sun's uneven heating of Earth by Sun drives all of the weather systems on Earth.

COMPONENTS OF WEATHER

air temperature
-measured by thermometer

air pressure
-barometer

wind speed & direction
-measured by an anenometer & weather vane respectively

humidity
-sling psychrometer

clouds: collections of condensed water droplets/ice crystals onto particulates in the troposphere

classified by shape & height

high = cirro-
medium = alto-
low = strato-

puffy = cumulus
feathery = cirrus
flat/layered = stratus

nimbo or nimbus = bad weather/precipitation

http://www.cityofportsmouth.com/school/dondero/msm/weather/index.html

Sect 3) Weather Forecasts

terms to know: meteorologist, station model, isobar, isotherm, weather maps

INTERACTIVE ON ATMOSPHERE & WEATHER http://www.learner.org/interactives/weather/


WEATHER PREDICTING:
http://www.glencoe.com/sites/common_assets/science/virtual_labs/ES15/ES15.html



STATION MODELS
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6) What is the station model for Pittsburgh, PA for today?