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16 Cards in this Set

  • Front
  • Back

As water vapor rises, it becomes colder and ____________ on particles of dust to form _________.

condenses, clouds

Clouds composed of ice crystals high in the sky are called ___________.

cirrus

Puffy clouds at middle altitudes are called ___________.

cumulus

Layered clouds at low altitudes are called _________.

stratus

Cloud close to the ground is called _____.

fog

Raindrops that fall through a layer of cold air can freeze to form _________.

sleet

At low temperatures, water vapor turns directly into solid crystals called __________.

snow

Rainfall is measured with an instrument called a ________ ________ .

rain gauge

When a cold, dry, air mass meets a warm, moist, air mass, the cold air pushes the warm air ___________ , producing __________ weather.

upward, stormy

Almost all weather fronts in North America are pushed from west to east by the _____________.

jetstream

Areas on a weather map that have the same air pressure are connected with lines called __________.

isobars

Low pressure systems bring ________ , and _________ weather; high pressure systems bring ______ , and _______ .

warm , and stormy dry , and cool

On a weather map, blue triangles on a line represent a _______ ________ ; red half circles on a line represent a ________ _____.

cold front, warm front

To forecast the weather, meteorologists collect and analyze data such as _________ , ____ _______ , and the direction of moving fronts.

temperature, air pressure

Scientists use weather balloons , radar and ____________ that orbit Earth to study the weather.

Satellites

Critical Thinking


How and why do clouds form along a front?

Clouds form when warm moist air rises and cools. Water vapor condenses on particles of dust . It forms from a front because that is where the cool air pushes upward.