Fronts
Weather
Weather Maps
Weather Tools
Surprise!
100
Starting from the top, name each of these fronts in order.
1. Cold Front
2. Warm Front
3. Occluded Front
4. Stationary Front
100
What is a hurricane?
A rotating mass of air that forms over the ocean and obtains its energy from the heat of warm, humid, rising air over warm ocean water in a low pressure area and has extremely strong winds and heavy rains
100
1. What kind of weather is Low Pressure (L) associated with?
2. What kind of weather is High Pressure (H) associated with?
1. Warmer, cloudy, rainy weather, and possible tornadoes or hurricanes.
2. Colder, drier, clearer weather.
100
Used to measure air pressure. The higher the air pressure the clearer the day; the lower the air pressure, the cloudier, rainier, or snowier the day
Barometer
100
What are the characteristics of the Maritime Tropical air mass?
It is an air mass which has warm and humid (moist) air; it originates close to the Tropics and in the Gulf of Mexico over water.
200
How does a warm front form?
Warm air moves gently over cold air and replaces it.
200
What weather will most likely happen if you see nimbostratus clouds?
Steady rain or snow
200
When isobars are far apart on a weather map, what is represented?
Calm atmosphere with light winds
200
Tracks the movement, type, and intensity of precipitation by transmitting an electric signal that bounces of of objects
Radar
200
Where would temperatures be cooler on average, a place of lower elevation or a place of higher elevation?
Temperatures in higher elevations will be cooler than places of lower elevation. Temperatures drop 3.6°F for every 1000 ft in elevation
300
How does a cold front form?
Cold dry air moves under warm moist air and pushes it up quickly causing thunderstorms, hail, and tornadoes to form. 
300
If air pressure suddenly drops what kind of change in weather should be expected?
Sunny weather will turn into stormy weather.
300
When isobars are close together on a weather map, what is represented?
High winds
300
Measures wind speed, wind direction, and wind pressure.
Anemometer
300
If it is cold outside and the temperature and air pressure begins to drop, what kind of weather will you most likely see later in the day?
Snow
400
How does an occluded front form?
A cold front catches up with a warm front trapping the warm air between the two cold air masses.
400
What type of severe weather would be associated with an unstable atmosphere, heavy winds, warm temperatures, and sudden hail?
Tornado
400
What do isotherms show on a map?
They are lines with the same temperature along the line. If you see several isotherms, they show bands of different temperatures.
400
Takes pictures of weather systems and shows locations of clouds and thickness of cloud cover
Satellite
400
If the temperature and dew point are close together and the air pressure steadily decreases what can be expected?
Precipitation will most likely occur
500
How are the atmospheric conditions before and after a cold front passes through?
Before a cold front passes through, air pressure will drop, temperatures will be warm, and relative humidity will be high. After a cold front passes through, air pressure will rise, temperatures will be cooler, and relative humidity will be much lower.
500
What atmospheric conditions would cause a thunderstorm to form?
Unstable atmosphere, warmer temperatures, higher relative humidity, and an approaching cold front.
500
What kind of weather will Clarksville be receiving in a few hours? What on the map tells you this?
Stormy/Rainy weather. There is a cold front near the city that is moving southeast and bringing thunderstorms along with it.
500
Measures the amount of water vapor and/or humidity in the air.
Hygrometer
500
What does the jet stream have to do with weather?
These high speed winds move and separate cold air masses from warm air masses.