1. HURRICANES vs. TORNADOES!
Objective: Describe and analyze the formation of severe weather.

2. Science Starter
What would you do if you were told that there was a chance that the place where you live would be destroyed by a large storm (but you’ve been told this before). Would you evacuate and leave your life behind you, or take the risk and stay?
2. Think Back: What type of air pressure system is associated with high precipitation and stormy weather?

3. Agenda Warm Up & Objective Announcements
Hurricane Katrina, 5 years later
Tornado & Hurricane Search
TORNADO & HURRICANE VIDEO CLIPS
Venn Diagram
Exit Ticket

4. Objective
SWBAT describe and analyze the factors leading up to the development of severe cyclonic systems

5. Reminders Tutoring Tues/Thurs 2:30-4:30pm Unit 5 Test: Next Tuesday
Not available this week (meetings)
Unit 5 Test: Next Tuesday

6. From Monday… Take out notes & HW from Monday
Use this time to fill out the remaining boxes in the fronts notes
Any group want to present on their front type?
Warm, Cold, Stationary, Occluded

7. Warm Fronts Warm air mass meets and rises above cold air mass
Associated with slow and steady rain, followed by hot, humid weather
gentle slope

8. Cold Fronts
Cold air masses overtake and pushes under warm air mass forms faster
Heavy rains and violent thunderstorms, followed by fair, cool weather
Steeper slope

9. Stationary Fronts
Front does not move b/c air flows parallel to front line
Gentle to moderate precipitation

10. Occluded Fronts
Cold fronts move faster than warm fronts they can catch up to and overtake a warm front, wedging the warm air upward
Complex; Heavy rains followed by light precipitation for several days

12. HURRICANE KATRINA… 5 years later

13. On the top part of the “X” is a date, which is when the house was checked.
To the left is the unit that conducted the search (volunteer unites from other states came in)
To the right are state abbreviations for contaminations within the house
On the bottom part of the “X” is a number which marks how many people they found dead inside Read more:

15. Hurricane and Tornado Search
Textbook page
Quietly in your seat, take 15 minutes to complete your graphic organizer
As you go, consider similarities and differences between the 2 storms

16. Tornadoes Hurricanes CYCLONIC SYSTEM What is it?
How does the storm develop?
How often does this storm occur?
What is the intensity ranking?
Associated with High or Low Pressure?
Tornadoes
Hurricanes

17. What is a Tornado?

18. How Do Tornadoes Develop?
Warm, humid air collides with cold, dry air
The warm air rises up through the cold air creating an updraft
If this updraft begins spinning, it can turn into a tornado

19. Damage Caused by Tornadoes
Extremely high winds can tear buildings apart, slip cars, and even suck the water out of a riverbed

20. Tornado in Joplin, Missouri
May
2011

21. STORM CHASERS VIDEO http://www.youtube.com/watch?v=65Su8wpmFu8
Why was this tornado in Joplin so destructive?
What damage resulted from this cyclonic storm?
What intensity rating did this tornado receive?
Any Future storm chasers in the crowd!?!

22. CFU What causes the most damage during a tornado?
What is the primary factor responsible for a tornado touching down?

23. Hurricane

24. Damage Caused by Hurricanes
Most from storm surge and flooding!!

25. FAST FACT
The word “hurricane” comes from the Taino Native American word, Hurucane, meaning “evil spirt of the wind.” The first time anyone flew into a hurricane happened in 1943 in the middle of WWII.

26. Raging Planet: Hurricanes
10:35-17:48
Answer the questions and fill in the blanks on the worksheet provided while you watch

27. CFU What produces the most damage during a hurricane?
How is a hurricane formed?
What gives a hurricane its energy?
What happens when a hurricane hits land?

29. Comparing & Contrasting Cyclonic Systems 5 minutes
With your group, complete a VENN DIAGRAM on hurricanes vs. tornadoes
Each group will be responsible for coming up and writing one thing for the class consensus Venn Diagram on the board
at least 2 points comparing the two systems
at least 4 points on their differences. Consider:
- speed - greatest damage
- location of formation - time of formation/ predictability

30. Venn Diagram: Hurricanes vs. Tornadoes

31. Comparing and Contrasting Tornadoes and Hurricanes
Hurricanes * Form over warm water
* Greatest damage comes from storm surges and flooding
* Lose speed over land
* Predictable
* Big, but slow
Tornadoes
* Form over land usually
* Greatest damage comes from winds
* Sometimes only last seconds
* Very unpredictable and fast
Spinning systems
of low pressure
High speed winds

32. Hurricane Katrina Damage

34. Exit Ticket
__1. What type of air pressure system is associated with hurricanes and tornadoes?
a. high pressure systems b. low pressure systems
__2. What is the intensity ranking scale for hurricanes?
a. Fujita Scale c. Saffir-Simpson Scale
b. Cyclone Scale d. Wind speed Scale
__3. Explain at least one key difference between tornadoes and hurricanes?
__4. What produces the most damage during a hurricane?
a. High wind speeds c. Heavy rainfall and storm surges
b. Collapsing buildings d. The trembling ground
__5. What produces the most damage during a tornado?
a. High wind speeds c. Heavy rainfall and storm surges
b. Collapsing buildings d. The trembling ground