Weather test 2 Flashcards

(55 cards)

1
Q

storm with lightning, thunder, heavy rain and sometimes hail. Unstable weather.

A

Thunderstorm

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2
Q

Forms due to strong sea breeze in tropic or cold fronts

A

Thunderstorm

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3
Q

take place within storm clouds

A

Sheet lightning

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4
Q

Form when fast rising air in the thunderstorm is hit by high altitude horizontal winds and begins spinning, forming a funnel of air and moisture.

A

Tornado

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5
Q

the result of static charge caused by friction as ice crystals carried in the updrafts collide with drops of pellets in downdrafts. Charge builds up until it is strong enough to cause discharge between the areas.

A

Lightning

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6
Q

Discharges can also occur between negative charges in the cloud and positive on the group. This appears a streaked flash

A

Streak lightning

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7
Q

created when discharge heats the air causing it to expand rapidly. Light travels quickly in air while sound travels slowly

A

thunder

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8
Q

Stretching from texas to nebraska, receives an average of 65 tornadoes per year

A

Tornado alley

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9
Q

severe component of a thunderstorm. A rotating funnel of air extends from the base of the thunderstorm clouds to the ground. Do more damage in a short time than any other storm on Earth because of the high winds. They follow paths difficult to predict

A

Tornado

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10
Q

Lifting of air must be strong in order to produce clouds that reach high in the atmosphere
Moisture needed to form clouds and precipitation . Moisture condenses and releases thermal energy heating the air.

A

Formation of thunderstorm

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11
Q

Wind speeds in a tornado are greatest at the center or vortex and it could be as high as

A

500 km/h

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12
Q

Damage homes by blowing away or collapsing, cars thrown, trees and powerlines uproot and snap, property damage

A

Tornado damage

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13
Q

severe cyclone occurs in western atlantic ocean, caribbean sea, gulf of mexico and eastern pacific ocean

A

Hurricane

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14
Q

severe cyclone that develops in the northwest pacific ocean

A

Typhoon

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15
Q

above 250 km

A

Catastrophic

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16
Q
A
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17
Q

predicting weather based on observations of atmospheric condition

A

Weather forecasting

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18
Q

air is calm, air pressure is low and sky is clear. The eye is calm as the strong surface winds that converge toward the center don’t reach. Some air sinks back into the center, warming it creating the cloud free eye.

A

Eye of a hurricane

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19
Q

119-153 km

A

Minimal

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20
Q

154-177 km

A

Moderate

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21
Q

178-209 km

A

Exstensive

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22
Q

210-249 km

A

Extreme

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23
Q

severe cyclone that develops in the Indian ocean and around australia

A

Tropical cyclone

24
Q

violent storms, strong winds, blowing snow and freezing temp. Snow does not have to fall. Wind could blow existing snow

25
northeasterly winds blow in from the ocean. Bring high winds, heavy precipitation, flooding, surging winds and hurricane force winds. Blizzard conditions. Dry arctic air pushes down across eastern Canada and northern US and warm moist air from the gulf of mexico or gulf stream. Temp diff fuels storms. Greater difference = stronger storm. Occur sept-april. Comma shape
Nor´easter
26
weather over 48 hrs
short term
27
weather over 3-7 days
long term
28
forecasts up to 6 hrs using remote senses
now casting
29
Measures humidity. Once a reading is made relative humidity is calculated
hygrometer
30
current weather will continue, accurate for a few hours conditions change with time
Persistence casting
31
collects data from long distances (radar, satellites, weather balloons)
remote sensing
32
measures temp, contains alcohol or mercury it expands as temp increases
thermometer
33
amt of moisture in the air to the max amt. Higher temp=more water
Relative humidity
34
collects rain/snow fall in a graduated container and measures precipitation
rain snow gauge
35
measures wind speed, catches the wind and spin. Vane shaped like an arrow that points in direction wind is coming from
anemometer
36
measures atmospheric pressure. Contains aneroid cells, thin metal walls that are sensitive to pressure changes.
Aneroid barometer
37
balloons are launched to study the upper atmosphere. Measures wind speed and direction. Contains a radiosonde which is an electric device with sensors that measures temp, pressure and water. Data is ratioed back to ground stations.
weather balloon
38
measures relative humidity, Consists of dry therm and wet bulb. Lower the humidity the more water evaporates from the cloth. The diff between them is determined and compared to a chart
psychrometer
39
radiation in the upper atmosphere provides cloud cover images and infrared heat images. GOES- geostationary operational environmental satellite. Orbits at the same rate as earth and provides a view of the weather over hemisphere
High orbit sat
40
radiation in the lower atmosphere detects changes in air temp, global wind patterns. POES- polar operational environmental satellites, orbits 14 times around earth per day to track weather systems
low orbit sat
41
radio waves are sent out into the atmosphere. Waves bounce off water and return to the radar. A computer image is produced of the location and speed of a storm
Doppler radar
42
show conditions in various areas. They can predict weather
weather maps
43
location with the same atmospheric pressure, the closer spaced together the greater pressure. This creates windy conditions
Isobars
44
locations with the same temp, shows hot and cold regions
Isotherms
45
weather stations. Symbols are used to show conditions, predict forecast and weather
surface stations
46
food supply depends on weather. Farmers rely on forecasts to plan when to plant, protect and harvest
effect on agriculture
47
Fishery and offshore oil industries rely on forecasting for safety
Effect on marine industry
48
Pilots and ferry operators rely on air navigation and marine forecasts to avoid dangerous conditions and risk to passengers
effect on transportation
49
day by day set of environmental conditions in a region
weather
50
set of conditions averaged over years
climate
51
Light colored rings are wood that grows in spring and early summer. Dark colored rings grew in late summer and fall. One light ring plus a dark equals one year of tree growth
tree rings
52
trapping of heat near the surface of the gases. They absorb heat and give it back to the earth. This heats the atmosphere and can impact weather patterns
greenhouse effect
53
rise in temp of our planet
global warming
54
only greenhouse gas produced by humans. Takes 1000s of years to break down
Halocarbons
55