L 26 Tornadoes Created by Karen Duong Oct 2012. Tornadoes nvironment/environment-natural- disasters/tornadoes/tornadoes-101/

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Presentation transcript:

L 26 Tornadoes Created by Karen Duong Oct 2012

Tornadoes nvironment/environment-natural- disasters/tornadoes/tornadoes-101/ nvironment/environment-natural- disasters/tornadoes/tornadoes-101/

L26Tornadoes What does a tornado look like? What is a tornado? A tornado is a violent, rotating column of air stretching from a cloud to the ground. Weather conditions needed to form tornadoes: Warm, humid air mass meets cold, dry air mass Cold air moves under the warm air, forcing it to rise What do we call a tornado that forms over water? Waterspouts

Tornadoes What makes them dangerous? Strong winds and flying debris Tornado Watch: tornadoes are possible in your area Tornado Warning: tornado has been seen in the sky or on radar Safety: basement, bathroom, under heavy furniture, away from windows, or lie flat in a ditch

Hurricanes

Hurricanes What is a hurricane: – Large rotating tropical weather system How are they formed? – When wind traveling in two different directions meet – Over warm ocean water – Energy comes from condensation of water vapor evaporating from ocean

Hurricanes What makes them dangerous? – Storm surges: A dome of water sweeps across the coast – Heavy rain = floods – Wind Safety: – Evacuate area – Cover windows with plywood – Stay indoors

Hurricanes nvironment/environment-natural- disasters/hurricanes/katrina-formation/ nvironment/environment-natural- disasters/hurricanes/katrina-formation/

Videos VideoID=3483&CategoryID=771 VideoID=3483&CategoryID=771 nvironment/environment-natural- disasters/tornadoes/water-spouts/ nvironment/environment-natural- disasters/tornadoes/water-spouts/

L 26 E.O.P Review: 1.List 4 types of air masses. 2. What does it mean if an air mass is warm and humid? 3.List the 4 types of fronts. 4.Which front can bring weird weather (an example would be hail)?

1.List 4 types of air masses. a)Maritime b)Continental c)Polar d)Tropical 2. What does it mean if an air mass is warm and humid? a)Maritime Tropical: near equator and over water 3.List the 4 types of fronts. a)Cold b)Warm c)Stationary d)Occluded 4.Which front can bring weird weather (an example would be hail)? What is happening to the air masses? a)Occluded: warm front trapped between two cold fronts

E.O.P How are tornadoes formed? – What makes them so dangerous? How are hurricanes formed? – What makes them so dangerous?

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