Weather Label Item WEATHER VOCABULARY Complete Definitions over

Weather

. Label Item: WEATHER VOCABULARY Complete Definitions over the weekend for the terms listed below! 1. Air pressure – 10. Condensation – 2. *Barometer – 11. Precipitation – 3. Weather – 12. Humidity – 4. *Wind – 13. *Saturation – 5. Global wind – 14. *Relative humidity – 6. *Coriolis effect – 15. *Dew point – 7. Jet stream – 16. Freezing rain – 8. Monsoon – 17. Sleet – 9. Evaporation – 18. Hail – 19. Acid rain –

The Water Cycle

Types of Precipitation • Rain/Drizzle – form from water droplets or ice crystals that melt as they fall • Freezing Rain – rain that freezes when it hits the ground or other surfaces • Sleet – rain that freezes while falling through the cold air • Snow – forms from ice crystals that merge in clouds • Hail – forms when ice pellets move up and down in clouds, growing larger as they gain layers of ice

Why is dust necessary for precipitation? • These particles are solids but are light enough to stay in the atmosphere for long periods of time. Water vapor will only condense on something solid.

• Cirrus – – Cloud Types Feathery, wispy Form in cold air at high altitudes Made of ice crystals Fair weather • Cumulus – Cotton ball clouds (puffy white) – Usually fair weather, daytime • Stratus – Spread out, flat layers, blanket – When the whole sky looks gray – Produce steady, light precipitation • Fog – Low-lying clouds – Form when ground is cooler than air above it

Cloud Prefixes & Suffixes • -nimbus or nimbo– Carries precipitation – Example: Cumulonimbus (TALL storm clouds) • alto– Clouds that form at medium altitudes • Cirro– High altitudes

Cloud Types

What is the difference in WEATHER & CLIMATE? • Weather – The condition of earth’s atmosphere at a particular time & place (daily) • Climate – The characteristics of weather conditions in a specific area over a LONG PERIOD OF TIME • 20 years

Different Climates • POLAR – extremely cold – very little precipitation – Penguins, polar bears, arctic fox, seals, puffin

Different Climates • HIGHLAND – Located in high altitudes – Rocky Mountains – Grizzly Bears, Mountain Lions

Different Climates • MILD – Experience all 4 seasons – Summers are warm/hot – Winters are cool/cold – Moist climate

Different Climates • DRY – Very little precipitation – Hot during the day and cold at night – Cactus, scorpions, lizards – Death Valley, CA (desert)

Different Climates • TROPICAL – Located near the equator – Very hot and wet – Colorful birds and plants – Amazon Rainforest

Different Climates • SEVERE – Extreme weather differences – Very cold and very hot

Climate Change • El Nino – A disturbance in wind patterns and ocean currents in the Pacific Ocean. • Ice Age

• Temperature Weather Basics – How fast/slow the molecules in the air move. – Qualitative: “It’s hot outside. ” – Quantitative: “It’s 90 degrees outside. ” • Air Pressure (Atmospheric Pressure) – Air moves from an area of high pressure to an area of low pressure. • Wind – Air that moves horizontally (parallel to the ground) • Relative Humidity – The amount of water vapor in the air • Dew Point – – The temperature at which air with a given amount of water vapor will reach saturation.

Air Masses • Air mass – large body of air that has the same temperature & humidity • Naming Air Masses – Temperature Classifications • (T) tropical – warm • (P) polar – cold • (A) arctic – extremely cold – Humidity Classifications • (c) continental – dry • (m) maritime - moist

Air Masses • Describe following air masses: 1. 2. 3. 4. 5. c. P c. A m. P c. T m. T

Fronts • Front – boundary between 2 air masses that meet • Weather conditions typically change as fronts pass by.

3 Types of Fronts • Cold – cold air mass that is under running and displacing the warmer air in its path (convection…remember? ) • Warm – warm air mass that is replacing a retreating relatively colder air mass • Stationary – a battle between warm and cold fronts

Air Pressure • Barometer – measures air pressure

High Pressure System • Formed when air moves all the way around a high-pressure center • Brings clear skies and calm air • Happy (weather) = HIGH

Low Pressure System • Formed when air moves all the way around a low-pressure center • Brings stormy weather • Lousy (weather) = LOW

Other Definitions • Tropical Storm – a lower-pressure system that starts the equator • Hurricane – tropical low pressure system with winds of 74 mph + • Storm Surge – huge mass of ocean water from a hurricane • Blizzard – blinding snowstorm • Thunderstorm – a storm with lightning and thunder • Tornado – violently rotating column of air stretching from a cloud to the ground • Meteorologist - scientist who studies the weather • Isobar – line that connects places that have the same air pressure

Wind • Wind travels in patterns on Earth. • Wind moves from an area of high pressure towards an area of low pressure. • Coriolis Effect – Winds bend to the right in the Northern Hemisphere. – Winds bend to the left in the Southern Hemisphere.

Global Winds • Doldrums – Low pressure zone – Air rises • Horse Latitudes – High pressure zone – Air sinks • Trade Winds – Blow from horse latitudes towards equator • Westerlies – Blow from horse latitudes towards poles • Easterlies – Blow away from polar regions

Global Winds

Reading Weather Maps • What type of precipitation is Maiden getting?

WEATHER LOG (40 POINTS) • Write your NAME at the top. • Pick a city & write it in the blank. • Find out the zip code of your city and write it in the blank. • Go to www. noaa. gov and find the latitude & longitude of your city. • Write the time zone of your city in the blank. • Pick a TIME to record your data each day. • Record the specified data for your city using the websites posted on Edmodo.

Weather Log • Please use your i. Pad to collect data for today’s weather & record it on your weather log. • If you need to do your log for yesterday, go to wunderground. com and click on “calendar view. ” • You may use the following: – Accu. Weather app – Weather. Station app – www. wunderground. com (via Safari)

Review • P. A 73 -74 – #9 -19 – #34 -38 (do not have to draw table) • P. 75 – #1 -7 (use diagram)

TEAM REVIEW POSTERS Groups: 1. Clouds 2. Fronts and Air Masses and Pressure 3. Severe WX 4. Water Cycle 5. Wind 6. Types of Precipitation 7. Weather Technology 8. How Human Activities Affect Our Atmosphere Rubric: 5 points: Teamwork 5 points: Colored Pretty & Matches Up Well 5 points: Accurate & Adequate Information 5 points: Presentation