WeatherFrontsICS18TOR

=== Weather FrontsRead the information about Weather Fronts ===
 * The purpose of this module is to introduce air masses and weather fronts .. You will be able to describe from where they originate and some basic properties about each air mass affecting the United States. **

=== View: Cold and Warm Front Demonstration ===

Answer the questions below.

 * 1) What happens when different types of are air masses collide? **When** air masses collide, a front forms.
 * 2)  What are the boundaries of air mass called? **The** boundaries of an air mass is called a front.
 * 3) Define an air mass? **An** air mass is a large body of air that has similar temperature and moisture properties throughout.
 * 4) How large may an air mass be? **An** air mass can be very large.
 * 5) What does the term moist mean. **The** word moist means humid.
 * 6) If an air mass is humid what does that mean? **It** means that it is warm.
 * 7) Describe an air mass which forms over Canada in terms of its temperature and moisture. **An** air mass that forms over Cananda could be cold and dry.
 * 8) Describe an air mass that forms over a desert in terms of its temperature and moisture. **It** would be hot and dry.
 * 9) Describe an air mass that forms over water in Gulf of Mexico in terms of its temperature and moisture. **It** would be warm and humid.
 * 10) In the area of the Unites states, which way do cold air masses move? (North or South) **Air** masses would move south.
 * 11) In the area of the Unites states which way do warm air masses move? **Warm** air masses would move north.
 * 12) Why are Canadian air masses considered to be dry air masses? **They** are dry because they form over land with not a lot of moisture.
 * 13) What happens when a warm humid air mass meat a cold dry air mass? **The** warm air would move up and over the cold air.
 * 14) Why can cold air masses from Canada make it all the way down to the Gulf of Mexico? **They** make it down there because the cold air would just push through the warm air.
 * 15) What is a front? //**A**// front is the boundaries between air masses.
 * 16) What typically happens when two different types of fronts collide? **When** they collide the warm air passes under it.
 * 17) What are the three types of fonts ** ? Cold, ** stationary, and warm ** . **
 * 18) Describe the temperature of the air behind a cold front. **The** air behind a cold front is cold.
 * 1) Looking at the diagram above, which state has a temperature of 38F? **South** Dakota.
 * 2) Looking at the diagram above, which state has a temperature of 55F? **Iowa.**
 * 3) Looking at the diagram above, what would you expect the temperature of Illinois to be in three days? EXPLAIN! **In** Illinois the temperature would be 45F because when the cold front passes by, the temperature would drop 15 degrees.
 * 4) How does the temperature of an area change as a cold front passes? **The** temperature would drop.
 * 5) What does precipitation mean? **Precipitation** means any form of water that falls to the ground.
 * 6) What type of precipitation occurs when a cold front passes? **There** would be showers and storms.
 * 7) Describe the type of air behind a warm front? **The** air behind a warm front would be warm and humid.
 * 8)  In which direction do warm fronts typically move. **Warm** fronts typically move south.
 * 9) What type of precipitation usually occurs when a warm front passes by? **The** precipitation would be prolonged rains.
 * 10) Label the two fronts on the diagram below: **A** cold front and a warm front.
 * 1) How is cold front diagrammed? **It** moves into the warm air and pushes it up.
 * 2) How is a warm front diagrammed? **It** moves into cold air and rises up in a slanted way.
 * 3) What is a stationary front? **A** front that does not move.
 * 4) How is a stationary front diagrammed? **It** is a mix of warm and cold air that does not move.
 * 5) When warm air contacts cold air, which air mass typically rises above the other? **Warm** air.
 * 6) Which of the following is a diagram of cold front and which is the warm front? **The** one on the right is the cold front and the one on the left is a warm front.

On the diagram below: On the diagram below:
 * 1) How are cold fronts diagrammed? **They** move through the warm air.
 * 2)  How many cold front are there on the diagram? **Four**
 * 3) In which direction is the front over Washington and Oregon traveling? How do you know? **South** because it is a cold front moving through warm air.
 * 4) In which direction is the front over North Carolina traveling? **South.**
 * 1) How is the warm front diagrammed? **It** moves across and over a cold front.
 * 2) In which direction is the warm front traveling? **Northeast**
 * 3) What do you call the front that is over the middle of Canada? **Stationary** front.
 * [[image:http://www.mrzimmerman.org/New%20Folder/HW/Weather%20Water/Air%20Masses%20and%20Fronts/Fronts/Questions%20Sheet%20%20Masses%20and%20Fronts_files/image009.jpg caption="Surface Map - Today (AccuWeather)" link="http://wwwa.accuweather.com/adcbin/public/maps_index.asp?type=sfc&day=1"]] ||
 * Surface Map - Today (AccuWeather) ||
 * 1) If it is snowing in Great Neck, what type of air mass must be present? **Cold** front.
 * 2)  If its very hot in October in Great Neck, what type of air mass must be present? **Warm** front.
 * 3) Assuming a warm front is moving into the area, there is a stagnant (non-moving) cold air mass around Great Neck, what type of precipitation might we expect? How long might it last? **Very** long showers in that area.