Weather+Front+Questions+CastJa

**The term used for boundaries of air masses are called 'fronts'**. I**t means slightly wet, or damp.** **A front is the boundary between air masses.**
 * What happens when different types of are air masses collide?
 * When they collide it creates clouds. **
 * What are the boundaries of air mass called?
 * Define an air mass?
 * An air mass is a body of air with horizontally uniform temperature, humidity, and pressure. **
 * How large may an air mass be?
 * An mass may be as much as the space or shape it is in. **
 * ** What does the term moist mean. **
 * If an air mass is humid what does that mean?
 * It means that it is cold and warm after raining. **
 * Describe an air mass which forms over Canada in terms of its temperature and moisture
 * There is one that forms over the Indian ocean is called a maritime tropical air mass **
 * Describe an air mass that forms over a desert in terms of its temperature and moisture.
 * It is very hot and humid also, there is very little water in the desert. **
 * Describe an air mass that forms over water in Gulf of Mexico in terms of its temperature and moisture.
 * Masses of air that travel south from the wide expanses of land in Canada, and north from the warm waters of the Gulf of Mexico. **
 * In the area of the Unites states, which way do cold air masses move? (North or South)
 * They move northward. **
 * In the area of the Unites states which way do warm air masses move?
 * They move southward **
 * Why are Canadian air masses considered to be dry air masses?
 * It is usually hot in Canada. **
 * What happens when a warm humid air mass meets a cold dry air mass?
 * It makes a Columbus cloud. **
 * Why can cold air masses from Canada make it all the way down to the Gulf of Mexico?
 * Cold air masses from Canada can make it all the way down because they are very strong. **
 * What is a front?

**Usually, a thunderstorm forms.**
 * What typically happens when two different types of fronts collide?

**Three different types of fronts are cold fronts, warm fronts and stationary fronts.**
 * What are the three types of fonts?

**The air behind a cold front is much colder than the beginning of the front and is much drier.**
 * Describe the temperature of the air behind a cold front.

**Nebraska has a temperature of 38F.**
 * Looking at the diagram above, which state has a temperature of 38F?

**Iowa has a temperature of 55F.**
 * Looking at the diagram above, which state has a temperature of 55F?

**I think it will be cold because the areas around the state has cold temperature reports.**
 * Looking at the diagram above, what would you expect the temperature of Illinois to be in three days? EXPLAIN!

**The temperature of the area will become colder because of the front coming in.** **Precipitation** **means rain or drizzling. Basically any weather that involves water.**
 * How does the temperature of an area change as a cold front passes?
 * What does precipitation mean?


 * What type of precipitation occurs when a cold front passes?
 * Snow is the usual type of precipitation that occurs when a cold front passes. **

**Warm air is behind a warm front.**
 * Describe the type of air behind a warm front?

**Warm fronts typically move slower than cold fronts and southeastern to the northeast.**
 * In which direction do warm fronts typically move.


 * What type of precipitation usually occurs when a warm front passes by
 * The type of precipitation that usually occurs when a warm front passes by is continual and prolonged precipitation lasting several hours or more. **

**__A warm front and cold front is shown on the diagram.__** **A warm front is diagrammed by red lines and red semicircles.**
 * Label the two fronts on the diagram below:
 * How is cold front diagrammed?
 * A cold front is diagrammed by ** **a blue line and blue triangles.**
 * How is a warm front diagrammed?

**A stationary front is when a cold or a warm front stops moving.**
 * What is a stationary front?

**Warm air typically rises above the cold air.**
 * How is a stationary front diagrammed?
 * A stationary front is diagrammed by alternating blue and red lines with blue triangles pointing towards the warmer air and red semicircles pointing towards the colder air. **
 * When warm air contacts cold air, which air mass typically rises above the other?

**The first diagram shows a warm front, the second diagram shows a cold front.**
 * Which of the following is a diagram of cold front and which is the warm front?