Science Unit 8 Test (Pt.1) Flashcards
When are thunderstorms most likely to occur?
at a cold front
What kind of weather occurs after a cold front passes?
cold and clear weather
What front would you expect to see rain for several days at?
a stationary front
What kind of area would have received drizzly rain 1 day ago?
A city in which a warm front has just passed and is still nearby.
What kind of pressure is at a warm front?
Low because precipitation is occuring.
When would you have sunny skies?
at areas of high pressure (high = happy)
What are the lines connecting points of equal air pressure on a weather map called?
isobars
What kind of front forms when a cold air mass displaces a warm air mass?
cold front
Where are hurricanes most likely to form?
above tropical oceans
Which conditions contribute to the decrease of a hurricane’s strength as it moves onto land?
lack of warm, moist air
Which What type of air mass would be the most likely to be associated with hurricanes?
maritime tropical (mT)
Climates of coastal cities tend to be _____ (compared to inland cities).
more moderate than inland cities
Which level of the atmosphere is weather ocuring?
troposphere
What happens to the temperature and wind speed as you move up through the troposphere?
temp decreases and wind speed increases (think of a mountain)
What direction does the jet stream blow?
west to east
Which heats up faster during the day but cools off faster at night, land or water?
land
What type of air mass brings cool, moist air?
maritime polar (mP)
If cold dry wind is blowing, what type of air mass is it coming from?
continental polar (cP)
What atmospheric factors influence global weather patterns?
global winds, jet stream, and air pressure belt
The initial source of energy for global winds is _____.
the sun
Where else can precipitaion occur other than at a front?
low pressure areas
Relative Humidity Equation:
the amount of vapor in the air/the total amount the air can hold
multipy answer by 100
What causes the most damage in a hurricane?
storm surge & flooding
How does air move?
Areas of high pressure to areas of low pressure
The Gulf Stream:
brings warm air to inland cities, moves hurricanes towards the U.S
The California Current:
brings cold air to coastal cities
High Pressure Weather:
clear, sunny skies
Low Pressure Weather:
lousy weather, precipitation
La niña:
hurricane, east coast, cooler pacific
El niño:
precipitation, west coast, warmer pacific
How do you use a chart to find relative humidity?
number of degrees differnce between wet and dry bulb readings.
How is an occluded front formed?
a warm front is caught in between two cold fronts, brings large amounts of rain/snow
barometer
measures air pressure
psychrometer
measures relative humidity
anemometer
measures wind speed
L to S: hurricane air mass, tornado, and thunderstorm
- air mass
- hurricane
- thunderstorm
- tornado
What increases as altitude increases in the atmosphere?
wind speed
