Air Mass Masters
An air mass is a large body of air. Does it have similar or very different temperature and moisture throughout?
Similar temperature and moisture.
What does H mean on a weather map?
High pressure.
Which front is shown by a blue line with triangles?
Cold front.
You see an L over a city. Is it under high pressure or low pressure?
Low pressure.
In CER, what does C stand for?
Claim.
An air mass forms over an ocean. Will it usually be moist or dry?
Moist.
What does L mean on a weather map?
Low pressure.
Which front is shown by a red line with semicircles?
Warm front.
A front’s triangles point toward your town. Is the front moving toward you or away from you?
Toward you.
In CER, what does E stand for?
Evidence.
An air mass forms over cold land. Will it be cold and dry or warm and moist?
Cold and dry.
Which usually brings clearer skies: high pressure or low pressure?
High pressure.
Which front stays in roughly the same place: stationary or cold?
Stationary front.
A cold front passes through your town. Will temperatures usually become warmer or cooler afterward?
Cooler.
Which is evidence from a weather map? A: “I think it will rain.” B: “There is a low-pressure system over our town.”
B: “There is a low-pressure system over our town.”
A warm air mass moves into your town. What will likely happen to the temperature?
The temperature will rise/get warmer.
In a low-pressure system, air rises. Is this more likely to help clouds form or keep skies clear?
Help clouds form.
A cold front catches up to a warm front. Which front forms?
Occluded front.
City A has isobars close together. City B has isobars far apart. Which city will likely have stronger winds?
City A.
Your claim is: “The temperature will get cooler.” Which evidence supports it? A: A cold front is approaching. B: A warm front is approaching.
A: A cold front is approaching.
A cold, dry air mass replaces a warm, moist air mass. What two changes would you expect?
The air will become colder and drier.
Which usually means stronger winds: isobars close together or isobars far apart?
Isobars close together.
At a cold front, cold air pushes underneath warm air. Does the warm air move upward or downward?
Upward.
A city has low pressure and a front nearby. Which forecast makes more sense: cloudy with possible rain, or clear skies all day? Name one clue that helped you.
Cloudy with possible rain. Clue: low pressure or a nearby front.
Finish this explanation: “Our town will likely get cooler after the cold front passes because ______.”
Colder air moves in and replaces warmer air. Accept similar wording.