monday october 5, 2015 objective...
TRANSCRIPT
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October 05, 2015
Monday October 5, 2015
Objective• I can list 5 air masses that affect US weather
• I can explain difference between land & sea breeze
WarmUphttp://www.cnn.com/studentnews
35 facts about storm
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October 05, 2015
Homeroom No talking, Work time
Your options today:1. make up missing work2. work on new vocab (7.E.1.3 & 7.E.1.5)
Quizlet3. Read silently
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October 05, 2015
DEN• Hand out folders (You may decorate)• "The Cay" Reading Excerpt/Questions
• Put "The Cay" reading activity in folder & place in "purple" bin before leaving room
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October 05, 2015
Homeroom: Foundational Core Today's word is "clarify"
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October 05, 2015
Homeroom: Foundational Core Today's word is "collaboration"
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October 05, 2015
Today's Agenda
• 7.E.1.3 & 7.E.1.5 Vocab words given• 7.E.1.3 & 7.E.1.5 Choice Board assigned• 7.E.1.3 & 7.E.1.5 C.Notes
Important Dates:
10/15 ALL missing work due no exception
Look at white board/online calendar for other dates
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October 05, 2015
7.E.1.3 (Severe Storms) & 7.E.1.5 (Air Mass/Wind) Vocab Words
• air mass• anticyclone• conduction• continental air mass• continental polar air mass• continental tropical air mass• convection• Coriolis effect• cyclone• flash flood• global wind• hurricane
• local wind• maritime air mass• maritime polar air mass• maritime tropical air mass• polar air mass• pressure gradient• radiation• storm• storm surge• tornado• tropical air mass• warm surface current• wind
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October 05, 2015
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October 05, 2015
7.E.1.3 & 7.E.1.5 Choice Board
• Due 10/13• Look in Google Classroom for assignment• READ EXPLANATIONS BEFORE COMPLETING
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October 05, 2015
#20 10/5/15 7.E.1.3 (Severe Storms) & 7.E.1.5 (Air Mass/Wind) C.Notes
• Students will copy C.Notes exactly as they appear• Students will learn different types of air masses that affect US weather, difference between conduction, convection & radiation and types of wind
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October 05, 2015
7.E.1.5 (Wind & Climate) & 7.E.1.3 (Severe storms) C. Notes What is an air mass
Where do air masses form
How are air masses controlled
Air masses
Types of air masses that affect US
What is the difference between conduction, convection and radiation
large section of the lower troposphere that has the same weather throughout
over continents, icecaps or the ocean
by patterns of heating and cooling over large areas of the Earth’s surface
Maritime air mass – air mass over ocean Continental air mass – air mass over land Tropical air mass – warm & hot Polar air mass ‐ cold air near the surface Arctic air mass – extremely cold
Maritime tropical (mT) – air masses are warm, moist & usually unstable i They can be associated with fog and low clouds as they moves northwardi Some originate in the subtropical Pacific Oceani Some originate over the Gulf of Mexico and Caribbean Sea
Maritime polar (mP) – air masses are cool, moist & unstable i Some originate as continental polar air masses over Asia and move westward over
the Pacifici Some originate from the North Atlantic and move southwestward toward the
Northeast StatesContinental tropical (cT) – air masses are hot, dry & unstable at low levels and generally stable aloft (upper‐level ridge)
i originate in northern Mexicoi characterized by clear skies and negligible rainfall
Continental polar (cP) – air masses are cold, dry & stable i marked by surface high pressure, cold temperatures, and low dew pointsi originate over northern Canada and Alaska
conduction – transfer of heat by touching i only occurs in solids i Example: pot cooking on a stove’s burner
Convection – transfer of heat through particles @ warm particles rise, cool particles sink i Circular motion
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October 05, 2015
7.E.1.5 (Wind & Climate) & 7.E.1.3 (Severe storms) C. Notes
How do the 3 types of heat transfer affect Earth’s atmosphere
What causes wind
Types of wind
What causes a pressure gradient
What is pressure‐gradient force
Where are wind speeds very high
What is the jet stream
What direction does jet streams flow
Coriolis effect affects wind
i Only occurs in liquids & gases i Example: pot of boiling water
Radiation – transfer of energy as waves i Example: sun warming Earth
The atmosphere is warmed by radiation and conduction and then is transferred throughout the atmosphere by convection
Air flowing from high pressure to low pressure Uneven heating and cooling of Earth’s surface
Local wind examples
i Sea breeze @ air moving from ocean to land o Occurs during day when land is warmer than water
i Land breeze @ air moving from land to ocean o Occurs during the night when water is warmer than land
Global wind examples
i Polar easterlies @ cold, fairly weak winds blowing from east to west i Doldrums @ very calm air in a band over the equator i Trade winds @ warm, steady winds that blow back toward the equator in usually
clear skies i Prevailing westerlies @cool air, usually moving quickly toward the poles from west
to east in both hemispheres
Island heats faster than water (land heats faster, water stays warmer longer) so the air above the island becomes warmer Molecules in air become further apart
i Air expands upward & outward Expansion lowers the air pressure over the island Cooler ocean air moves in toward low‐pressure area over the island
i Called pressure gradient between ocean and island i Speed of wind depends on pressure gradient
o The lower the pressure (hotter the island), the steeper the pressure gradient @ stronger wind
Force that makes the wind blow
Upper troposphere i Jet stream located there
fairly narrow zone of very strong winds in the upper troposphere i Separates warm from cold air
east to west
Rather than flowing directly from areas of high pressure to low pressure, as they would on a non‐rotating planet, winds and currents tend to flow to the right of this direction north of the equator, and to the left of this direction south of the equator
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October 05, 2015
7.E.1.5 (Wind & Climate) & 7.E.1.3 (Severe storms) C. Notes
What is a warm surface current
How do currants affect weather
Example of warm surface current
What is a storm
This deflection is responsible for the rotation of large cyclones
As ocean currents move westward along the equator, they absorb lots of solar energy, heat up, and become warm currents
Because ocean currents circulate water worldwide, they have a significant impact on the movement of energy and moisture between the oceans and the atmosphere
Gulf Stream i One of the strongest known currents i As the Gulf Stream approaches Cape Hatteras, North Caroling the cold current
that flows from the north separates it from the coast as warm Gulf Stream waters from the south (Florida) combine with the cold winds a dense concentration of fog forms along with an immense heat transfer causing atmospheric storms to intensify in this region
natural disturbances in the atmosphere that involve air pressure, clouds, precipitation, and strong winds
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October 05, 2015
7.E.1.5 (Wind & Climate) & 7.E.1.3 (Severe storms) C. Notes Major types of storms Thunderstorms
i known as electrical storms i brief, intense storms that affect a small area i characterized by the presence of lightning and thunder i produced rapidly when rising air causes cumulus clouds to build upward into a
thunderhead i are usually accompanied by strong winds, heavy rain and sometimes snow, hail
or no precipitation at all i cloud type associated with thunderstorms are cumulonimbus
Hurricanes
i huge, rotating storms that form over the ocean near the equator i produce very strong winds, heavy rains, and large, powerful waves and can
cause severe flooding and damage from strong winds Tornadoes
i violently whirling winds sometimes visible as a funnelshaped cloud i produced by severe thunderstorms i Spiraling high winds and extremely low pressure are the unique features
Winter storms i are associated with quickly moving cold fronts and they can produce high
winds, very low temperatures i possible blizzards i ice storms and large accumulations of snow
Floods
i occur when an area is inundated with water i most often associated with hurricanes and thunderstorms