1. Fronts and Air Masses

2.  Look at the weather conditions outside. What type of air mass is over Long Island?  What type of front is it causing?  Low pressure/high pressure?  What facts did you use to answer these questions? (Ex: I looked outside and noticed….)

3. Today’s Weather Map

4. A Body of air that has the same temperature, humidity, and pressure is known as a(n)  Air mass

5. What are the characteristics of a high pressure system?  Clear, cool, dry

6. What are the characteristics of a low pressure system?  Warm, wet, cloudy

7. A place where two different bodies of air collide is called a ______  front

8. What type of weather will a cold front bring?  Heavy precipitation for a short time

9. What type of weather will a warm front bring?  Light precipitation for a long time

10. Which air mass has the lowest pressure?  A. mP  B. mT  C. cT  D. cP Clue- Write characteristics of each mass next to it.

11. Which air mass has the highest pressure?  A. mP  B. mT  C. cT  D. cP Clue- Write characteristics of each mass next to it.

12. The weather characteristics of an air mass result primarily from its ________  Geographic origin

13. Compare an air mass from the Gulf of Mexico with and air mass from Canada

14. Cold/dry air rushing in and pushing warm air up explains a ___________ front  Cold

15. Weather along most fronts is usually cloudy with precipitation because the warm air along most fronts is usually __________  Rising and cooling, causing water vapor to cool, condense and form clouds.

16. Label each front Stationary front Warm front Cold front Occluded front

17. What are the characteristics of an anticyclone  High Pressure  Brings cool and dry conditions  Rotates clockwise

18. What are the characteristics of a cyclone  Brings warm, cloudy, and humid weather  Low Pressure  Travels counter-clockwise

19. Label the High and Lower Pressure:  Compare the following two air masses: mT mP LOWHIGH warmcool

20. Why would one maritime air mass be more moist than another?  It stays over the ocean longer.

21. Don’t forget to study for the test using the review sheet and your notes!