Download Weather Unit Study Guide Directions

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Weather Unit Study Guide
Directions:
Prepare the definitions for the following terms:
Air mass – large amounts of air that moves across the land and
water.
Air pressure – the pressing down of the air on the Earth’s
surface.
Anemometer – the instrument that measures wind speed.
Atmosphere – a blanket of air surrounding the Earth.
Barometer – the instrument that measures air pressure.
Beaufort Scale – a scale that shows numbers for wind speed.
Cirrus clouds – thin, feathery high altitude clouds.
Climate – the average weather of an area for many years.
Cold front (weather) – occurs when a cold air mass moves into an
area occupied by warmer air.
Condensation –
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The change of a gas to a liquid when heat energy is lost.
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A step in the water cycle.
Cumulus clouds – puffy, white middle altitude clouds.
Evaporation –
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The change of a liquid to a gas.
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A step in the water cycle.
Fog – a cloud that forms close to the ground when the
temperature of the air is colder than the temperature of
the ground.
Front – the place where two air masses meet.
Groundwater – water that has seeped into the ground, filling
empty spaces in rocks and soil below the Earth’s surface.
Weather Gr. 5 Voc key 08
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Jet stream – a narrow band of high-speed winds found 7-9 miles
above the Earth’s surface. These winds generally blow from
west to east at speeds over 200 miles per hour.
Meteorologist – a scientist who studies weather.
Precipitation –
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Water that falls from clouds, usually as rain or snow, and
returns to the Earth’s surface from the atmosphere.
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A step of the water cycle.
Rain – cloud droplets large enough to fall to the Earth’s surface.
Relative humidity – the comparison of water vapor present in the
air to the amount of water vapor air can hold.
Revolution (of the Earth) – the movement of the Earth orbiting
the Sun that causes the seasons to change.
Sleet – frozen raindrops.
Snow – white flakes of ice formed by the freezing of water vapor
in clouds.
Solar energy – a form of energy from the Sun.
Stratus clouds – flat layers of low altitude clouds.
Warm front (weather) – occurs when a warm air mass moves into
an area occupied by colder air.
Water cycle – the process by which water leaves a body of water
through evaporation, condenses into clouds in the
atmosphere, falls back to the Earth’s surface as
precipitation and returns to the ocean in rivers.
Weather – day to day changes in temperature, air pressure,
humidity, precipitation, wind speed, and wind direction.
Wind –
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moving air over the Earth’s surface caused by heating of
the air by solar energy.
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the force of nature responsible for bringing the weather.
Weather Gr. 5 Voc key 08
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