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 _____.
