Elements of Weather

Jetstream

A narrow band of high-velocity air in the upper troposphere is called the

Northern Hemisphere

Airborne objects tend to curve to the right _____.

anemometer

An instrument for measuring the speed of the wind is the _____.

wind vane

An instrument used to determine the direction of air movement is the _____.

high fair

Areas of sinking cold air generally have______ pressure and_______ weather.

sinks

As air is cooled it:

rises

As air is warmed by the surface of the Earth, it _____.

True

Cold air is more dense than warm air.

uneven

Local winds can be caused by______ heating of the Earth's surface.

sleet

Rain falling through sub-freezing calm air will turn into _____.

14.7 lb/in²

Standard sea level pressure is about _____.

temperature

The element that affects the weather most is _____.

The Sun

The energy necessary for weather changes to occur comes from _____.

in the upper troposphere

The general flow of air from the equator to the poles occurs _____.

at the surface of the Earth

The general flow of air from the poles to the equator occurs _____.

barometer

The instrument used to measure air pressure is the _____.

relative humidity

The measure of water vapor saturation of air is called

clockwise

The movement of air around an anticyclone is:

rising sinking right

The overall global circulation of air is caused by _________ equatorial air, ______ polar air, and deflection of air to the _________ in the Northern Hemisphere.

differences

The primary cause of weather is due to _____________ in temperature around the Earth.

Dew Point

The temperature at which air becomes saturated with water vapor is called the

ground

The troposphere receives most of its heat energy directly from the

Celsius Fahrenheit

Two standard scales for measuring temperature are:

212

Water boils at ° F.

0

Water freezes at ° C.

Increase

When air is cooled, the relative humidity will _____.