Vocab
refers to the state of the atmosphere at a specific time and place.
Weather
When air is cooled to its dew point near the ground, it forms
fog
is a large, swirling, low-pressure system that forms over the warm Atlantic Ocean.
hurricane
a line drawn to connect points of equal atmospheric pressure.
isobar
a measure of the average amount of motion of molecules.
Temperature
Water falling from clouds is called
precipitation
The National Weather Service classifies a winter storm as a __________ if:
The winds are 56 km/h.
The temperature is low.
The visibility is less than 400 m in falling or blowing snow.
These conditions persist for three hours or more.
blizzard
The amount of water vapor present in the air
Humidity
a large body of air that has properties similar to the part of Earth’s surface over which it develops.
air mass
a person who studies the weather.
meteorologist
is a measure of the amount of water vapor present in the air compared to the amount needed for saturation at a specific temperature.
Relative Humidity
A boundary between two air masses of different density, moisture, or temperature
front
Data recorded on a map using a combination of symbols, forming a
station model
Is the temperature at which air is saturated and condensation forms
dew point
a violently rotating column of air in contact with the ground.
tornado
Weather maps have lines called _________________that connect locations of equal temperature or pressure.
isotherms