CH 16 - Weather Factors

Flashcards about weather factors

__ refers to the state of the atmosphere at a specific time and place, describing conditions such as air pressure wind temperature and the amount of moisture in the air.

Weather

__ is a measure of the average amount of motion of molecules.

Temperature

The total energy of motion in the particles of a substance is called __ .

Thermal Energy

When the sun's energy reaches the Earth's atmosphere, it is either or .

Absorbed, Reflected

Most of the heating of the troposphere comes from .

Convection Currents

The two main greenhouse gasses are and .

Water Vapor, Carbon Dioxide

__ is the horizontal movement of air parallel to Earth’s surface.

Wind

Air moves from areas of pressure to areas of pressure.

High, Low

Differences in air pressure are caused by of the Earth’s surface by the sun.

Uneven Heating

Wind moves from high pressure and low pressure in all directions.

Away, Towards

Wind speed is measured using an __

Anemometer

Wind direction is measured with a or .

Wind Vane, Weather Vane

Blowing winds can reduce body heat, this is known as a __.

Wind-Chill Factor

__ retains heat longer than land, and also takes longer to heat and cool.

Water

Sea breezes blow from the to the during the day, while land breezes blow from the to the at night.

Sea, Land, Land, Sea

Winds are named for the __ they come from.

Direction

Clouds form when water vapor on (dust, salt particles in the air).

Condenses, Aerosols

__ clouds are fair weather or fluffy clouds.

Cumulus

__ clouds are layered clouds (spread out).

Stratus

__ clouds are thin feathery clouds

Cirrus

__ forms at high levels (ice crystals).

Cirrus

Cumulonimbus means

Rain cloud

__ is caused by water condensing in the clouds and falling to earth.

Precipitation

__ are chunks of ice formed in an updraft inside cumulonimbus clouds during thunderstorms.

Hail

A is used to measure the amount of precipitation over a period of time.

Rain Gauge

__ crystals of silver iodide mixed with dry ice are sprinkled into clouds from airplanes for cloud seeding.

Tiny

__ are clouds that form at or near the ground.

Fog