Bell Ringer What is the name for a very severe thunderstorm? supercell

Tornadoes

Funnel Cloud (has not reached the ground) Tornadoes Tornado – narrow, funnel-shaped column of spiraling winds that extends from a cloud to the ground Before reaching the ground, it’s called a funnel cloud Funnel Cloud (has not reached the ground)

Tornadoes Always travels with a fast-moving supercell, the most severe thunderstorm (40-65km/hr) The winds in the tornado can travel up to 500km/hr (310mph)! Although devastating, most tornadoes only last a few minutes

Tornadoes People can see tornados because of dust and debris pulled into the swirling column

Tornado Formation A tornado is caused by a wind shear, which is when wind speed and direction change suddenly with height Causes a horizontal rotation near surface

Tornado Formation An updraft shifts this rotating air into an upward, vertical position

Tornado Formation As updrafts speed up the rotation, air pressure drops in the center of the column, creating a big difference in pressure between tornado’s interior and exterior This creates the tornado’s violent winds

Tornado Classification The National Weather Service (NWS) tracks supercells on radar and issues watches and warnings to alert the public

Tornado Classification Tornado watch – conditions are favorable for a tornado to form Tornado warning -- a tornado has been spotted in the area If a tornado warning has been issued, people should seek shelter immediately, preferably in an area away from windows or doors

Tornado Classification Tornados vary in size and intensity Fujita Tornado Intensity Scale (Fujita Scale) – ranks tornadoes according to the path of destruction, wind speed, and duration Ranges from EF0 to EF5 (EF5 is most violent)

Fujita Scale Simulator https://cimss.ssec.wisc.edu/satmet/modules/8_wild_weather/ww-13.html

F5 Tornadoes

Where Are Tornadoes? Most tornadoes occur in the spring, during late afternoon and evening, when temperature differences are the greatest Most common in Central US where cP and mT air masses collide This area is often called Tornado Alley

Quiz I will give you about 2-3 minutes to look over your review sheet for your quiz Remember that 7.4 notes are also on your quiz! When finished, turn into the CORRECT basket I am still missing atmosphere vocab from: Yury, Qai, Alejandra, Cam, Zakilya, Daniel, Julian, Julia, Nicholas After today they are late

Quiz I will give you about 2-3 minutes to look over your review sheet for your quiz Remember that 7.4 notes are also on your quiz! When finished, turn into the CORRECT basket I am still missing atmosphere vocab from: Alejandro, TaNayaha, Luke, Chavon, Ashley, Khaylah, Tati, Joel, Jennie After today they are late

Fact or Fiction? Hollywood movies often stretch the truth Watch the movie. On a sheet of paper, write down 3 things that you think the movie gets wrong about tornadoes (has to be about tornadoes… can’t say “I don’t think that couple would be together in real life”)

Tuscaloosa tornado – http://www.youtube.com/watch?v=mPcUDIXX2G4

Fact or Fiction? Movies aren’t always scientifically accurate Watch the movie. On a sheet of paper, write down 5 Tornado Facts they got scientifically right and 5 Tornado Fictions they got scientifically wrong Try your best!

Fact or Fiction? Movies aren’t always scientifically accurate Watch the first part of Wizard of Oz, paying close attention to the tornado scene On a sheet of paper, write down 5 Tornado Facts they got scientifically right and 5 Tornado Fictions they got scientifically wrong

Lab Dish Soap and Vinegar are at FRONT TABLE. Soap: 2 spoonfuls Vinegar: 4 spoonfuls Return to your lab station, and I will add the food coloring.

http://www.youtube.com/watch?v=q7gtFurmKX0 http://www.youtube.com/watch?v=hORUSzOvUfM

Twister – Fact or Fiction? Write down 10 things that are true about tornadoes from the movie Write down 5 things that are NOT true about tornadoes from the movie We will be watching this several days, so you do not have to have all of these today. Hold onto your sheet!

Twister – Fact or Fiction? http://www.ew.com/ew/article/0,,292766,00.html