weather i wind
DESCRIPTION
WIND/WEATHER HAPPENS BECAUSE OF…TRANSCRIPT
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WIND
Caused by air pressure and temperature differences. Moves from H to L Horizontal movement of air
http://www.youtube.com/watch?v=xCLwbqmacck
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WIND/WEATHER HAPPENS BECAUSE OF…
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HOW DO WE MEASURE WIND?
Anemometer- tool used to measure wind speed. Cups catch the wind and record speed.
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LOCAL WINDS- WINDS OVER A SHORT DISTANCE
(Land/Water) heats faster _________ (denser molecules)
As land heats the air rises and colder air comes in to replace it.
Sea Breeze- breeze coming from ocean/water to land (during the day)
Land Breeze- winds moving from land to water (generally in evenings)
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MONSOON
-Land and Sea breezes that change direction with the seasons.
http://www.youtube.com/watch?v=M0lTfJDiZsw
https://www.youtube.com/watch?v=RD5I9UhbRgg
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GLOBAL WINDS- STEADY WINDS FROM A LONG DISTANCE AND SPECIFIC DIRECTION.
http://www.youtube.com/watch?v=GvXPtQuQtiU
Caused by temperature changes between the poles and equator.
Seasonal changes (amount of sunlight and heat) at various locations affect global winds.https://www.youtube.com/watch?v=vp_1gK9139E
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CORIOLIS EFFECT- GLOBAL WIND CURVE CAUSED BY THE ROTATION OF THE EARTH
http://www.youtube.com/watch?v=i2mec3vgeaIhttp://www.youtube.com/watch?v=Pb69HENUZs8
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JET STREAM- BANDS OF HIGH SPEED WINDS IN THE STRATOSPHERE
http://www.youtube.com/watch?v=huweohIh_Bw
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BILL NYE- WIND
http://www.youtube.com/watch?v=zMyBheIn2DA
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BEAUFORT WIND SCALE
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BEAUFORT SCALE ASSIGNObj: Create/Design your own version of the Beaufort scale.You must have a title for your scale (2 pts)You must have a range of numbers (at least 5) (2 pts)You must include a wind speed category (2 pts)You must include an observation category (2 pts)You must include a colored picture for each category of wind speed (4 pts)Neatness/organization of design (2 pts)Bonus points will be awarded for highly artistic or creative scales. *A theme might be a great way to earn some bonus points!
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CANIS WIND SCALE
Wind scale Wind speed (mph)
Description Picture
0 Under 1 mph No movement of dog fur, ears at rest
1 1-5 mph Slight movement of fur
2 6-10 mph Light flapping of ears with breeze
3 11-15 mph Ears flipped back due to wind, fur rustling across body
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WEATHER II- PRECIPITATION
Water evaporates into the air from water surfaces and living things
It returns to the surface as PrecipitationWarmer air can hold more moistureClouds condense to form drops
http://www.youtube.com/watch?v=zBnKgwnn7i4
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ASSIGNMENT
YOU are a drop of water…(you can be wherever you want)…Write a diary describing your journey through the water cycle. How do you become a cloud? What type of conditions cause you to fall as precipitation? What form of precipitation are you? ½-1 pg. BE creative, and descriptive. This can be funny or serious…you decide. You have 15-20 minutes! Be prepared to share. *Use pg. 545 to help you.
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Precipitation- any form of water that falls from clouds and reaches the surface.
http://www.youtube.com/watch?v=SesRrocIFtc
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PRECIPITATION CAN COME IN MANY FORMS
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HOW DO WE MEASURE RAIN?
Rain gauge- tool used to collect and measure rainfallRuler- tool used to measure snow
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RAIN SHADOW
Windward side gets rain as clouds lift to go over mountains.
Leeward side is generally dryer
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ASSIGNMENT
1) Read pgs. 551-554 in the red book2) Take notes on the various forms of precipitation (rain, sleet, freezing rain, hail and snow.) Add these to your existing notes on precipitation.
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WEATHER III (HUMIDITY, CLOUDS)
http://www.youtube.com/watch?v=7GS5jl4nLek
Humidity- amount of ___________________ in the air
Warm air can hold more water than cold air (it’s less dense)
moisture
This is what we are doing for our lab! PAY ATTENTION
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SPECIFIC HUMIDITY
Amount of moisture in the airWarmer air holds more moisture
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RELATIVE HUMIDITY
Comparison of specific humidity to maximum amount of that the air can hold.
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PSYCHROMETER
Tool used to measure humidity. It compares air temp of a dry bulb with the temp of a wet bulb.
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CLOUDS High fog, mist or haze Cloud shapes relate to air movement
----- Stratiform
Cumuliform
http://www.youtube.com/watch?v=sGTSNYF8qIk
WARNING…this might bring a tear to your eye…clouds are beautiful.
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3 TYPES OF CLOUDS
1) Cirrus- thin, feathery, very high altitude; made of ice crystals2) Cumulus- thick, puffy, rising air (usually warm) vertical air3) Stratus- low sheets of clouds, layers, horizontal air
http://www.youtube.com/watch?v=FMagDRCpJ14