today

1
today

• A bit of review
• Video (if you dont have a worksheet, you need
  one!)
• the video will be at the library (Hurricane
  Katrina the storm that drowned a city) on
  reserve in media services
• Exams back on Monday, so far so pretty good
  (havent done any short-answers yet) no perfect
  score on multiple choice

2

• Two clips are
• http//learners.gsfc.nasa.gov/mediaviewer/birth_hu
  rr/
• http//www.pbs.org/wgbh/nova/sciencenow/3204/02.ht
  ml (Watch the Segment) Have a look at this --
  provides an interesting background to the
  pre-2005 mood in New Orleans

3
Quick review of hurricanes

• Clickers, please

4
Where do hurricanes originate that affect the
East Coast of the US?

• Eastern Africa
• The middle of the north Atlantic
• In the Caribbean
• In the south Atlantic

3
2
1
4
5
Where are the strongest winds in a hurricane?

• Near the outer edge
• In the eye
• In the eyewall

NASA photo
6
Which of these reflects birth/death of a
hurricane the best?

• They need warm water so they die if they cross
  the equator
• They need warm water so they die if they hit land
• They need a mixture of warm water and cool
  Canadian air, so they die if they veer towards
  the East Coast

7
Following the track of a hurricane, why is damage
greater on the right side?

• The wind driving the hurricane adds on to the
  hurricanes wind
• The wind driving the hurricane subtracts from the
  hurricanes wind
• Theres no real relation between which side of
  the storm you are on and damage

100 mph
20 mph