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Homeroom read

Homeroom read. Warm up. Answer these questions in your notebook: What is the difference between humidity and relative humidity? What are clouds made of? List the differences between a cold front and a warm front. Sketch the side profile of each. QUIZ!. High Pressure Systems.

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Homeroom read

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  1. Homeroomread

  2. Warm up • Answer these questions in your notebook: • What is the difference between humidity and relative humidity? • What are clouds made of? • List the differences between a cold front and a warm front. Sketch the side profile of each.

  3. QUIZ!

  4. High Pressure Systems • Formed when air moves all the way around a high-pressure center • Air sinks down • Spreads out toward areas of low pressure

  5. Characteristics • Large and change slowly • Moves slowly clockwise • Clear skies and calm air • This is due to air sinking to a lower altitude, which causes it to warm up a little bit (clouds disappear)

  6. Low Pressure Systems • Surrounds a center of low pressure • Air moves in toward lowest pressure • Moves upward to higher altitude • Upward motion moves air faster

  7. Characteristics • Stormy weather • Form where a warm front meets a cold front • Moves quickly counter-clockwise

  8. Low Pressure System Examples • Tropical Storms • Hurricanes • Winter Storms • Severe Storms

  9. Thunderstorms • Definition: Storm w/ lightning and thunder • Caused by rising moist air • Warm, humid air moves vertically into cooler air above

  10. Thunderstorm Formation:Cumulus Stage • Rising humid air (updraft) forms a cumulus cloud. • Energy increases the air motion, forming a cumulonimbus cloud.

  11. Mature Stage • Large ice particles form in the low temps near the top of the cloud. • They fall and pull cold air down with them, forming a strong downdraft • Downdraft brings heavy rain or hail • This is the most severe stage of a thunderstorm

  12. Dissipating Stage • Downdraft spreads out, which blocks more warm air from moving upward • The blocking of warm air causes the storm to slow down and eventually end

  13. Characteristics • Thunderstorms can form: • At a cold front • Air can be forced upward quickly • Within an air mass • Uneven heating produces convection and thunderstorms

  14. Effects of Thunderstorms • Flash Floods • Strong winds • Hail • Lightning • Tornadoes

  15. Video Segment • http://app.discoveryeducation.com/player/?assetGuid=0637b2e7-8063-48bd-ada4-64740657e954&fromMyDe=0&isPrinterFriendly=0&provider=&isLessonFromHealth=0&productcode=DETB&isAssigned=false&includeHeader=YES&homeworkGuid=

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