Download Weather


The present state of the atmosphere.

The amount of water vapor held in the air.

A measure of the amount of water vapor that
air is holding compared to the amount it can
hold at different temperatures.

The temperature at which air is saturated and
condensation forms.


Clouds form due to warm air being forced
upward, expanding, and cooling.
There are 3 basic types.


Clouds that form layers or smooth sheets in the
sky.
They form at low altitudes. (fog)


Clouds that are large and white, often with flat
bases.
These are known to produce fair weather or
thunderstorms


High, thin, white, feathery clouds containing
ice crystals.
Fair weather clouds but can indicate
approaching storms.

A large body of air that has the same properties
as Earth’s surface.

Masses of air molecules pushing down from
above.

The boundary between cold and warm air
masses.


Sends out repeated radio waves and monitors
the reflected waves from distant storms.
Helps predict weather.

A violent, whirling wind that moves in a
narrow path over land.

A large, swirling, low-pressure system that
forms over tropical oceans.

A person who studies weather.

Instrument used to measure air pressure.

Measures the amount of wind that is present.

Used to measure wind speed.

Measures wind direction

Measures the amount of rainfall