1. Weather Unit E in our textbooks Video Intro 15:00

2. Air E10-11 mixture of gases that take up space and have weight Nitrogen = 78% Oxygen = 21% Carbon Dioxide, water vapor, etc. = 1%

3. Gases Importance to Life E10-11 Carbon Dioxide (CO 2 ) - plants use to make food Oxygen (O 2 ) – Humans breathe it in Nitrogen – bacteria makes it useful for plants Water vapor – makes rain (helps plants grow)

4. Atmosphere E12-13 Thermosphere Mesosphere Stratosphere TROPOSPHERE***(where weather happens) Orange = Thermosphere Pink = Mesosphere Yellow = Stratosphere Sky Blue = troposphere

5. Weather vs. Climate E13; E86-91 WEATHER WEATHER = condition of atmosphere (troposphere) at a certain place and time CLIMATE CLIMATE = weather conditions over a LONG period of time

6. 3 Climate Categories E 86-91 Polar – temperature usually below freezing Temperate – warm, dry summers & cold, wet winters Tropical – hot and rainy all year Video 15:00

7. Greenhouse Effect E14-15 heat builds up near Earths surface and is trapped by the atmosphere pollution increases it and may be causing global warming Video 24:00

8. Wind E20-22 As air is warmed, the particles spread farther apart (Hot Air Balloons). Warm air RISES; Cool air SINKS Wind = movement of air Video 3:24

9. Wind Tools E38-41 To find DIRECTION: Wind vane Wind sock To find SPEED: Anemometer – tool with four cups that spin Beaufort Scale – measures wind speed from 2-12

10. Air Pressure E30-33 Air Pressure – push of air against its surroundings Barometer – measures air pressure Cooler air=higher pressure; Warmer air=lower pressure Video 13:00

11. Humidity E46-47 Humidity – amount of water vapor in the air (changes from day to day) Sweat = cooling system; As it evaporates (changes from a liquid to a gas), it cools your body. * When the humidity is high, it doesnt evaporate as easily, and therefore, you feel hotter. Video 3:39

12. Precipitation E44-48 Clouds form when water vapor condenses (changes from a gas to a liquid). *When the drops are heavy enough, they fall to Earth. Precipitation – any form of water that falls from the air (rain, snow, sleet, hail, etc.) Rain Gauge – tool used to measure amount of precipitation Video 15:01

13. TYPES OF CLOUDS E55-57 Cumulus – tall and puffy – look like cauliflower Stratus – FLAT, gray blankets Cirrus – wispy – look like commas

14. Prefixes for Cloud Names E57 Nimbo- = RAIN Cirro- = HIGH Alto- = MEDIUM Video 15:00

15. Forecasting E54; 62-65 Weather satellites – devices in space that take pictures of clouds and collect weather information Weather forecasters- person who makes predictions about the weather using maps and images from the satellites Video 15:00

16. Fronts E64-65 Front–place where two different types of air masses meet Warm front = warm moves into cool (light rain) Cold front = cold moves into warm (thunderstorms) Video 4:30

17. Storms E68-70 Thunderstorm – storm with heavy rain, strong winds, lightning, and thunder Flash Flood – sudden and violent floods Video 15:00

18. Hurricanes/Tornadoes E71-74 Hurricanes – large violent storms that form over warm ocean water (winds at least 74 mph) Tornado – funnel-shaped storm of upward spinning wind Video 15:00

19. Seasons E78-83 1 rotation about Earths axis = 1 day (24 hours) 1 revolution around the sun = 1 year (365 ¼ days) Revolution is when the earth travels around the sun. After 365 days, its done! Rotation is when the earth takes a spin. After 24 hours, a new day can begin.

20. Seasons E78-83 SEASONS occur because Earth is TILTED on its AXIS Video 26:00

21. Weather Fun Field Trip Mrs. Frizzle Style Video 29:24

22. References - Videos Rain or Shine: Understanding the Weather. Rainbow Educational Media (1987). Retrieved May 4, 2006, from unitedstreaming: http://www.unitedstreaming.com/http://www.unitedstreaming.com/ Weather Smart: The Water Cycle and Clouds. United Learning (2001). Retrieved May 4, 2006, from unitedstreaming: http://www.unitedstreaming.com/http://www.unitedstreaming.com/ Power Up: Energy in Our Environment. Rainbow Educational Media (1992). Retrieved May 4, 2006, from unitedstreaming: http://www.unitedstreaming.com/http://www.unitedstreaming.com/ Weather Smart: Forecasting and Weather Instruments. United Learning (2001). Retrieved May 4, 2006, from unitedstreaming: http://www.unitedstreaming.com/ Reasons for the Seasons, The. United Learning (1997). Retrieved May 4, 2006, from unitedstreaming: http://www.unitedstreaming.com/ http://www.unitedstreaming.com/ Weather Smart: Thunderstorms. United Learning (2001). Retrieved May 4, 2006, from unitedstreaming: http://www.unitedstreaming.com/ Weather Smart: Climate. United Learning (2001). Retrieved May 4, 2006, from unitedstreaming: http://www.unitedstreaming.com/

23. References - Pictures Mrs. Frizzle Picture. May 4, 2006 www.verizonreads.netwww.verizonreads.net Windsock. May 3, 2006. www.aerocovers.comwww.aerocovers.com Weather Map. May 4, 2006. www.weather.comwww.weather.com Warm front rising above cold front. Paul Fuqua. (2005). Retrieved May 4, 2006, from unitedstreaming: http://www.unitedstreaming.com/ http://www.unitedstreaming.com/ Hurricane Frances approaching Florida coast.. (2005). Retrieved May 4, 2006, from unitedstreaming: http://www.unitedstreaming.com/ http://www.unitedstreaming.com/ Tornado. May 2, 2006 mypage.bluewin.ch/klipsi/tornado-Springer.jpg