Fronts Fronts Animation- http://www.phschool.com/atschool/phsciexp/active_art/weather _fronts/

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Presentation transcript:

Fronts Fronts Animation- http://www.phschool.com/atschool/phsciexp/active_art/weather _fronts/

Answer this question… What happens to the upper level air in the jet stream when there is an area of convergence? Divergence? What winds do you get on the ground for each?

Answer this question… What happens between the air masses (fronts) when the Low is created on the ground from the upper atmosphere? What does this create?

Cyclogenesis

Supercell Thunderstorm- Downdraft and updraft in equilibrium allowing storm to grow bigger

How do we find pressure areas on a map? Use isobars- areas on a map with equal pressure (same idea as topographic maps! In 4mb increment levels Start on the edge of the map Spacing between points should be relative and to scale. Practice makes perfect!

Lets Look at current maps Based on the Isobar map…where are the Lows? Where do you expect there to be weather?

BEFORE THE BELL! Somewhere in a blank spot in your notes, without using your notes, try to explain the formation of a cyclone. Draw it in at least 4 stages. Label the fronts. Also, what is an isobar map? What can we find from an isobar map? On a scale of 1-10 how much fun are isobar maps to draw? DON’T GET HELP FROM ENYONE!

Hail Formation http://www.atmosedu.com/meteor/Animations/52_Hail/5 2.html

Before the bell… How does lightning form? How does the Van de Graff machine represent lightning?

Lightning Watch the first video and summarize how lightning forms. Video- https://www.youtube.co m/watch?v=tKN_bJ0HX Ss Leaders and Streamers- https://www.youtube.co m/watch?v=6MUYsIjTK vk NOAA Explnation- http://www.srh.noaa.go v/srh/jetstream/lightning /lightning.html

Tornado Formation Watch these videos and write down a summary of how they form http://www.scientificamerican.com/video/how-do-tornadoes-form2013-04-23/ http://ngm.nationalgeographic.com/2013/11/biggest-storm/tornado-formation

Tornados-General Formation Intersecting winds at different speeds and directions meet within a storm system Wind sheer causes horizontal column of fast moving air Down drafts and/or updrafts cause the column of spinning air to extend vertically from ground to thunderstorm

Tornado Videos https://www.youtube.com/watch?v=bjb7QtMEBUg

Hurricanes What is it? Where do they form? What do they need?

Hurricanes https://www.youtube.com/watch?v=Wk_FVXVnE2I

Hurricane Footage? https://www.youtube.com/watch?v=-Kou0HBpX4A What kills a hurricane?

Tornado vs Hurricane https://www.youtube.com/watch?v=W0LskBe_QfA