Download Weather Flashcards4 - Henrico County Public Schools

What causes weather?
The uneven heating of Earth’s ground
and atmosphere
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What is meteorology?
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The study of the Earth’s air, especially
the movements and events that cause
weather
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Who studies meteorology?
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A meteorologist
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What is temperature?
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The measurement of the amount of
heat energy in the atmosphere
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What tool do meteorologists use to
measure air temperature?
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A thermometer
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What word do we use to describe
the amount of water vapor that is
in the air?
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Humidity
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What tool do scientists use to measure
the amount of water vapor in the air?
A hygrometer
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What is a front?
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The boundary between air masses of
different temperature and humidity
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What is an air mass?
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A very large body of air that has
about the same temperature and
humidity through it
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Describe a cold front.
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When cold air pushes into warm air
causing the warm air to rise quickly; this
front produces thunderstorms, bringing
fair, cooler weather.
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Describe a warm front.
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When a warm air mass slides above
a cold air mass producing light rain or
snow, lasting for several days; when
the front passes we will have warmer,
more humid weather.
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What tool do scientists use to measure
the amount of rainfall?
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A rain gauge
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The weight of the air over a given spot
is called ____.
Air pressure
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What tool do scientists use to
measure air pressure?
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A barometer
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You are in a ______ pressure area
when warm air presses down on the
Earth’s surface with less force.
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Low
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What type of weather do low pressure
systems usually produce?
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Wet weather
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You are in a ____ pressure area when
cold air pushes down harder on the
Earth’s surface.
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What type of weather do high
pressure systems usually bring?
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High
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Pleasantly dry and cool weather
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What is the movement of air from high
to low pressure areas?
Wind
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What tool do scientists use to measure
wind speed?
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Anemometer
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These clouds are fluffy and white with a
flat bottom. They usually bring fair
weather.
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Cumulus clouds
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This type of cloud is a smooth, gray
cloud that covers the whole sky. It
usually brings light rain and drizzle.
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Stratus cloud
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This type of cloud is feathery and made
of tiny pieces of ice. It is associated
with fair weather.
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This type of cloud looks like puffs of
smoke. It usually brings thunderstorms.
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Cirrus cloud
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Cumulonimbus cloud
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Name four different types of
precipitation.
Rain, snow, sleet, hail
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What type of severe storm forms over
land?
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Tornadoes
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What type of severe storm forms
over water?
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Hurricanes
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___ is the measure of the amount of
heat energy in the atmosphere.
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Temperature
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