WEATHER IWind

http://www.youtube.com/watch?v=RzSqhrn2dDM

WIND

Caused by air pressure and temperature differences. Moves from H to L Horizontal movement of air

http://www.youtube.com/watch?v=xCLwbqmacck

WIND/WEATHER HAPPENS BECAUSE OF…

HOW DO WE MEASURE WIND?

Anemometer- tool used to measure wind speed. Cups catch the wind and record speed.

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)

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

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

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

JET STREAM- BANDS OF HIGH SPEED WINDS IN THE STRATOSPHERE

http://www.youtube.com/watch?v=huweohIh_Bw

BILL NYE- WIND

http://www.youtube.com/watch?v=zMyBheIn2DA

BEAUFORT WIND SCALE

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!

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

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

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.

Precipitation- any form of water that falls from clouds and reaches the surface.

http://www.youtube.com/watch?v=SesRrocIFtc

PRECIPITATION CAN COME IN MANY FORMS

HOW DO WE MEASURE RAIN?

Rain gauge- tool used to collect and measure rainfallRuler- tool used to measure snow

RAIN SHADOW

Windward side gets rain as clouds lift to go over mountains.

Leeward side is generally dryer

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.

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

SPECIFIC HUMIDITY

Amount of moisture in the airWarmer air holds more moisture

RELATIVE HUMIDITY

Comparison of specific humidity to maximum amount of that the air can hold.

PSYCHROMETER

Tool used to measure humidity. It compares air temp of a dry bulb with the temp of a wet bulb.

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.

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

http://www.youtube.com/watch?v=bIc0Oss4boQ