2. What conditions are needed for hurricanes to form? Tropical Storms start within 8º and 15º north and south of the equator where surface sea temperatures reach 27ºC. Tropical Storms start within 8º and 15º north and south of the equator where surface sea temperatures reach 27ºC. The air above the warm sea is heated and rises. This causes low pressure. The air above the warm sea is heated and rises. This causes low pressure. Sea depths of at least 50 metres Sea depths of at least 50 metres

3. Warm water heats the air causing it to rise really quickly, then it gets pushed aside as it cools. This pushing causes the clouds to spin. When does it become a hurricane? Hurricanes are tropical storms where the winds get faster than 118 km/h (73 mph). The storms have a central area of calm known as the "eye", which is the funnel through which the warm air rises. Overland, the storms no longer have warm water to power them and die out within a few days, but not before winds do a lot of damage.

4. Task 1 Plot the track hurricane Katrina took using your tracking map and data sheet. Task 2 Using an atlas add the names of large towns and cities which were in the hurricanes path. Task 3 Which places so you think will have been worst effected by the hurricane and why?

6. The Hazards Strong winds Strong winds Heavy rain Heavy rain Storm surges Storm surges

7. Katrina Task 4 From the pictures and information make bullet point notes on the effects

8. Hundreds of thousands of people leave the city of New Orleans in the southern US, in preparation for Hurricane Katrina

9. Those people who stayed behind gathered at the New Orleans Super Dome.

10. High winds brought down trees as far inland as the city of Baton Rouge

11. The storm was so strong it brought down brick structures, crushing these cars

12. Lots of the area is below sea level, so it's in danger of flooding. Lots of the area is below sea level, so it's in danger of flooding. Flooding was wide spread across New Orleans.

13. This man waits on his top floor for rescue in New Orleans

14. Storm surges caused wide spread damage along the coast. In some places waves were up to eight metres high.

15. Storm surges damaged boats and boat yards

16. Roads have collapsed which has hampered the rescue operation

17. There are public heath concerns that disease will spread due to sewage polluted water.

18. Oil prices are set to rise

19. So far… At least 100 people have died At least 100 people have died The damage is thought to cost £14bn The damage is thought to cost £14bn