A front is a boundary or transition zone between two air masses with different characteristics. might me expect a change in temperature, precipitation, and wind direction.Page 30 ESworkbooks©2011cdunbar “Air Masses” Earth Science Reference Tables page 13 1. Copy the written form from the reference tables into the table below. 2. Determine the temperature and humidity that each symbol represents. Symbol Written form Type of weather cP and cT and mP and mT and cA and 3. In the map below, write the correct abbreviation (cP, cT, mP, mT) in the corresponding location, to show the characteristics of an air mass that originated there. The “X” represents NY State. 4. Write the symbol for the air mass located in Central Canada. _____ 5. Write the symbol for the air mass located over the Gulf of Mexico. _____ 6. Write the symbol for the air mass located over Alaska _____ 7. Write the symbol for the air mass located over the Northern Pacific Ocean _____ 8. Write the symbol for the air mass located over the Northern Atlantic Ocean _____. 9. Write the symbol for the air mass located over the Southern Pacific Ocean _____. Circle the correct term that completes the sentences below. 10. As an air mass that originated in Central Canada moves south, it becomes [warmer / colder] 11. As an air mass that originated in The Gulf of Mexico moves north, it becomes [warmer / colder] 12. As an air mass that originated in the North Atlantic Ocean moves over land, it becomes [wetter / dryer]