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What is the process when water changes from a liquid to a gas?
evaporation
What is water that falls to the ground called?
precipitation
What is the amount of water vapor in the air called?
humidity
What is the weight of the air called?
air pressure
What tool is used to measure air pressure?
barometer
How is an area’s temperatures affected by its location near a body of water?
milder (warmer) temperatures
What type of weather can be expected with low barometric pressure?
cloudy, rainy, stormy, snowy
What type of weather can be expected with high air pressure?
clear skies, dry, sunny
What is a front?
an area where 2 air masses meet
What weather usually results from a cold front?
heavy rain, thunderstorms, tornadoes, cumulonimbus clouds
How does wind travel near the sea during the day?
sea breeze
What is it called when a warm air mass slowly replaces a cold air mass?
a warm front
What type of front is formed when 2 air masses meet and do not have enough energy to move?
stationary
What type of weather usually occurs during a stationary front?
many days of overcast skies, and rain
What will happen when a warm air mass meets a cold air mass?
warm air will rise over cold air: warm front; brings clouds and rain
How does wind travel near the sea at night?
land breeze
What are the characteristics of a La Nina?
cool pacific waters, drier and milder winters in the South, more active hurricane season
What causes wind?
changes in air pressure: uneven heating and cooling of the earth’s atmosphere
Which winds affect the weather in NC?
prevailing westerlies
What are the characteristics of an El Nino?
warm pacific waters, wetter conditions in the South
What is the process where producers release water into the air?
transpiration
What instrument is used to measure wind speed?
anemometer
What direction does air move?
from areas of high pressure to areas of low pressure
What is a large body of air that has the same temperature and humidity throughout called?
air mass
What is the process when water changes from a gas to a liquid?
condensation