Transcript Did you know - Ms Dudek`s Website

Did you know…
• Weather Related Deaths in the U.S. (1940-1991)
– Hurricanes= 9%
– Tornadoes=26%
– Floods= 27%
– Lightning= 38%
• **How did Benjamin Franklin feel when he
discovered electricity?
• ...shocked
• Intro Storms:
http://library.thinkquest.org/5818/
(esp. look at safety)
• On website, look at Hurricanes
and Tornadoes
Storm Project
• Introduce STORM project-- pick a storm, then
divide up the jobs:
• (final product will be a trifold poster—use software
such as Excel, Word, Publisher)
• Choices: (tornadoes, hurricanes, severe T-storms
(lightning, winds, hail), or blizzards--include lake
effect snow)
• You can work by yourself: "floods and droughts"
• ***Be sure all work is in student's own words!!**
• Keep a formal BIBLIOGRAPHY
• excellent pictures
• 1 graph of REAL data about your type of storm
• safety precautions, including what to do for a
watch and warning
• write an "almost true" news story about your type
of storm
• causes and effects other interesting facts
• where are most found (or where they occur the
most) in the world (if it’s U.S., which states)
• rating of severity (like SS scale is....)
• list of 5 worst historic storms (same type)—what
was the property damage, deaths, injuries, etc.?
• include where/when it occurred, strength/intensity,
damage/injuries/deaths, etc.
Criteria for Blizzards:
Make sure you have this down!
(must continue for 3 hours)
• freezing temperatures and strong winds
(gusting over 30mph) so wind chills -15°F
or less
• heavy snowfall
Ex: Blizzard of 1993
“Storm of the Century”
• March 11-15
• 60 inches of snow in one
location in TN (Marietta
got 8”)
• 45mph winds in Norcross
• lowest pressure= 960 mB
(28.35”Hg)
• about $10 billion in
damage
• 300 deaths
• 11 tornadoes in FL
Did you know…
• one bolt of energy contains enough
energy to toast 160,000 pieces of bread.
• every second around 100 lightning
bolts strike the Earth.
• every year lightning kills 1000 people.
• lightning can heat air to 33,000°C.
• Intro Storms:
http://library.thinkquest.org/5818/ (esp.
look at safety)
• On website, look at Thunderstorms and
Blizzards
Thunderstorms
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strong winds, heavy
rain, lightning (static
electricity), and
thunder (the sound)
5:1 ratio
for example: if you
see lightning, then
hear the thunder 10
seconds later, how
far away is the
storm?
• lightning kills more people
in U.S. than tornadoes or
hurricanes (Copy this
one)
• can occur along fast
moving cold fronts in CB
clouds (and this one)
Thunderstorms: Make sure you
have this
• Caused by:
• mountain uplift
• warm air rising in summer
• cold frontal passage
Severe T-storms
• thunderstorm safety
(Make sure you have
• severe thunderstorms
this)
(has one or more of
– don’t be (or be
the following)
near) tallest object
– stay away from
– high winds
water and metals
– tornadoes
(conducts
electricity)
– hail (damage
crops, dent cars,
break windows)
– flash floods
Flooding—variety of causes
2009 (Sept 21-23) Atlanta Flood
Mableton Subdivision
(Kennesaw)
• What is a tornado’s favorite game?
• .....Twister
Tornadoes
– happen in only
1% of all t-storms
– start as a funnel
cloud that drops
out of a CB cloud
– must touch the
ground
(waterspout if
touches water)
– SMALL: most
about 10-60
meters wide
Most (75%) tornadoes hit the U.S.
Tornado Alley (Make sure you have this)
most happen in spring and early summer
(April for Atlanta)
What caused this??
More about tornadoes:
– most last only a few
minutes
– winds speeds
usually 120-180
km/hr (some up to
500 km/hr)
– most deaths/injuries
from flying debris*
– watch vs warning
– Fujita Scale for
tornado intensity
(F0-F5)
Hurricane (note the size!)—the
most powerful storm on earth
• What did the hurricane say to the other
hurricane?.......
• I have my EYE on you.
• DYK…
• the energy in one hurricane is equal to
about 500,000 atomic bombs?
Hurricane facts:
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wind speeds of AT LEAST 120 km/hr
(74mph)—some reach up to 300 km/hr
(begins as a tropical depression, then tropical
storm)
most powerful storms on Earth
called typhoons in western Pacific and
cyclones in Indian Ocean
most form 5-20° latitude over WARM, tropical
oceans (energy comes from condensation of
water vapor) (MAKE SURE YOU HAVE THIS!)
BIG: 160-1,500 km in diameter
MORE Hurricane Facts
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can last for days
can travel for thousands of
kilometers
eye=calm center
most deaths/injuries (90%)
from water (heavy rain and
storm surge 1-8 m high)
aircraft fly into the hurricanes
satellites follow the hurricanes
Saffir-Simpson for hurricane
intensity (SS1-SS5)
Why are these flamingos in the
restroom (hint: Miami Zoo)
Hurricane Dennis
• View from space (website of Dennis)
Parts of a
hurricane
• Hurricanes are
fueled by the
evaporation of
warm water, so
they fall apart
when they hit
land and/or
cold water
(MAKE SURE YOU
HAVE THIS)
Storm surge
Before
and
After
•
Saffir-Simpson (animated website)
How are hurricanes named?
• Look at names for 2010 hurricanes/tropical storms.
(website)
• Rules:
– alphabetical, male/female (can be international)
– name tropical storms and hurricanes
– do not use Q, U, X, Y, and Z
– deadly/devastating hurricanes--names have been
"retired“ (ex: Katrina, Andrew, etc.)
• As a group, make up names for 2016 (graduation!)-discuss categories too
Hurricane Simulation
• Hurricane tracking???:
http://ww2010.atmos.uiuc.edu/(Gh)/gui
des/mtr/hurr/hurtrack/index.html
• BEGIN Weather Eye (become the Mayor
of a coastal city)
10 worst hurricanes in U.S.
• 1. The Great Labor Day Storm(1935) - Florida
2. Hurricane Katrina(2005) - Louisiana & Mississippi
3. Hurricane Camille(1969) - Mississippi, SE
Louisiana
4.Hurricane Andrew(1992) - Florida and Louisiana
5. Unnamed Hurricane(1886) - Texas
6. The Atlantic-Gulf Hurricane(1919) - Florida, Texas
7. San Felipe-Okeechobee Hurricane(1928) - FL
8. Hurricane Donna(1960) - Florida to New England
9. Unnamed Storm(1915) - New Orleans, Louisiana
10. Hurricane Carla(1961) - Texas
Compare/Contrast
Hurricanes and Tornadoes
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both can move fast (slows down over land)
both occur in summer
neither can be stopped, but precautions available
both have strong, swirling winds
both have scales of intensity
both natural disasters (dangerous storms)
both destructive and can be deadly
both involve water and cumulonimbus clouds
both LOW pressure (cyclones)
• both spin counter clockwise
Differences
• HURRICANE
• larger (200-300 miles
in diameter)
• forms over warm
water (80+ degrees)
• June-Nov (Sept)
• flood/water damage
• lasts 7-10 days
• Saffir-Simpson Scale
(1-5)
• TORNADO
• smaller (30 ft- 1.5
miles wide)
• forms over land
(otherwise a waterspout)
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•
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•
April-June
wind damage
lasts 10-20 minutes
Fujita-Pearson Scale
(0-6)
Questions
• What properties of air near the ground are
likely to produce a thunderstorm? (think
of type of pressure and humidity)
• Moist, low pressure
• Which combination of properties describe
cold air? (think of density and pressure)
• High density and high pressure
• What is the source of a hurricane’s energy?
a. warm, moist air evaporating from the sea
b. cool, moist air evaporating from the sea
c. warm, dry air evaporating from the sea
d. warm, moist air condensing from the
sea
• What happens when moist air rises high
into the sky?
• it cools and condenses
• Where are tropical storms born?
– a.
– b.
– c.
– d.
over water near Earth’s poles
over land near Earth’s poles
over water near the equator
over land near the equator
• Return to :
http://library.thinkquest.org/5818/ (esp.
look at safety)
• On website, look at Floods and Drought
• The eye of a hurricane has very _______
pressure and ________ winds.
• low, no/calm
• If a hurricane travels at an average speed
of 30 km/hr, how long will it take to cross
2,100 km of ocean? about _______days
• 2100km x 1/30 x 1/24 = about 3 days