Download Unit 2 Section 7 Climate, Weather and Storms

75.Define
“Climate”.
Climate refers to long-term weather trends
and the range of variations that can be
detected over decades in a specific region.
http://www.flickr.com/photos/wnywaterfallers/2589127004/
http://www.happytouring.com/a-humid-subtropical-climate-decorates-wonderful-state-of-kentucky/
76.Do weather trends vary or stay the same from
year to year? can vary widely
Give an example to justify your answer.
annual snowfall
http://1ms.net/early-snowfall-241958.html
77. State the famous statement which contrasts climat
and weather.
"CLIMATE IS WHAT YOU EXPECT,
WEATHER IS WHAT YOU GET
http://www.fantasticviewpoint.com/wp-content/uploads
78. How are forecasters able to predict
weather trends over time?
time based on long-term climate records
http://www.fantasticviewpoint.com/amazing-photos-of-storms-and-lightning/
79. Low-pressure belts at the equator and at
50° to 60° north and south latitudes generate
abundant precipitation. At latitudes around
30° north and south, dry descending air from
high pressure belts produces arid zones that
include Earth's major deserts.
http://traveltips.usatoday.com/survive-amazon-rainforest-12654.html
http://www.tripextras.com/usa
80. Between middle latitudes and the polar
regions, a sharp pressure gradient creates
jet stream winds flowing from west to east at
the boundary area.
http://eatingjellyfish.com/?tag=jet-stream
81. What do the jet streams transport? Heat
82.What happens when the mid-latitude jet stream
dips down from Canada into the United States
during the winter?
it carries arctic air and winter storms into the
southeastern states
http://fox59.com/2013/07/31/cool-spell-at-day-8-coolest-end-to-july-in-4-decades/#axzz2gQRRdv4r
ww.accuweather.com/en/weather-blogs/anderson/wild-jet-stream-pattern-across-canada-through-the-weekend-1/75760
83.Hurricanes form over tropical waters (between
8° and 20° latitude) in areas with what (3)
conditions?
high humidity, light winds, and warm sea
surface temperatures
http://champion-glass.net/championglass/httpdocs/hurricanes.html
84. Number these steps 1 – 6 in the correct order for the formation
of a hurricane.
___4___ air pressure near the top of the storm starts to rise in
response to latent heat warming
___1___ appearance of a tropical disturbance (cluster of
thunderstorms)
___3__ the Coriolis force leads the converging winds into a
counterclockwise circulation around the storm's lowest-pressure area
___6___ the upper-level area of high pressure acts like a chimney to
vent the tropical system and keeps the air converging at the surface
from piling up around the center
___2___ falling pressure pulls in more air at the surface, which
makes more warm air rise and release latent heat, which further
reduces surface pressure.
___5___ a high-pressure zone makes air diverge (flow outward)
around the top of the center of the system and then it drops to the
ground, forming powerful winds
http://news.discovery.com/earth/hurricane-heads-up-for-2012-120406.htm
85.What (3) circumstances could weaken or
diminish a hurricane?
If air were to pile up at the center, surface
pressure would rise inside the storm and
ultimately weaken or destroy it.
At the surface hurricanes can diminish quickly
if they move over cooler water or land and
lose their supplies of warm, moist tropical air,
or if they move into an area where the largescale flow aloft is not favorable for continued
development or maintenance of the circulation.
86. What causes most of the stormy weather in the
United States, especially during the winter season?
mid-latitude cyclones
87. What conditions
allow mid-latitude
cyclones to occur?
They occur when
warm tropical
and cold polar air
masses meet at
the polar front.
http://www.lbtsfire.com/Tornadoes.html
88. What causes
a cyclonic system
to start to move
into a spiral?
when warm air
is lifted over
the colder air
http://www.liveweatherblogs.com/index.php?option=com_community&view=groups&task=viewdiscussi
on&groupid=44&topicid=30911&Itemid=179
… just
thought
this was
cool!
89.Compare the location of the highest wind
velocities between a cyclone and a
hurricane.
In cyclones, their strongest wind velocities
are at high altitudes.
In hurricanes, their highest velocities are at
the surface where pressure differences are
greatest.
http://www.lighthousepacifica.com/devotions-from-2-7-13-tornado-ejections/