Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards




share
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

D - Science - Unit 7

Study Guide for Weather Formative - Air Masses & Fronts - Part 1

QuestionAnswer
What is air mass? A huge body of air that has similar temperature, air pressure, and humidity throughout.
How do air masses move? they are moved by the jet streams and global wind systems
How are air masses moved in the continental U.S.? by the prevailing westerlies and jet streams
3 part - maritime polar (mP) - Where does it form, what is it's temperature and what is it's humidity? OCEAN - COOL - HUMID (WET)
3 part - continental polar (cP) - Where does it form, what is it's temperature and what is it's humidity? LAND - COOL - DRY
3 part - maritime tropical (mT) - Where does it form, what is it's temperature and what is it's humidity? OCEAN - WARM - HUMID (WET)
3 part - continental tropical (cT) - Where does it form, what is it's temperature and what is it's humidity? LAND - WARM - DRY
What is a warm front? A fast-moving warm air mass that overtakes a slowly moving cold air mass. The warm air, which is less dense, rises over the cold air.
In a warm front, if the warm air is humid, what happens? light rain or snow falls AS THE FRONT PASSES (OR ALONG THE FRONT) passes
In a warm front, if the warm air is dry, what happens? scattered clouds form
Because warm fronts generally move slowly, what type of weather will you have? rainy or cloudy for several days
After a warm front passes, what type of weather will you have? warm and humid
What is a cold front? A rapidly moving cold air mass that runs into a slowly moving warm air mass. The denser cold air sinks under the lighter warm air pushing the warm air upward along the leading edge of the colder air.
In a cold front, when the warm air rises, cools and reaches the dew point , what occurs? it starts to condense forming tiny water droplets or ice crystals, which the form clouds
In a cold front, if the warm air is humid, what happens? heavy rain or snow fall, AS THE FRONT PASSES (OR ALONG THE FRONT)
In a cold front, if the warm air is dry, what happens? there may only be cloudy skies, AS THE FRONT PASSES (OR ALONG THE FRONT),
Since cold fronts tend to move quickly, what can they cause? sudden, violent weather changes resulting in thunderstorms, hail, and tornadoes
After a cold front passes, what type of weather will you have? cooler/colder and drier weather, bringing clear skies and shifting winds
How does a stationary front form? when weak warm and cold air masses meet, but neither can move the other
In a stationary front, where the two air masses meet what does the water vapor in the warm air condenses into? rain, snow, fog, or clouds
In a stationary front, if the air masses remain stalled over an area, what will the weather be like? cloudy, or rain/snow for several days
What does the weather that occurs after the stationary front has passed depend on? what type of air mass comes in to take the place of the stationary front
What is the most complex of the fronts? occluded front
Where does a occluded front occur? occurs where a warm air mass is caught between two cooler air masses
How does the air move in an occluded front? The cooler, denser air moves underneath the warmer, less dense air pushing it upward, cutting it off from the surface. The two cooler air masses meet in the middle and may mix.
In an occluded front, as the warm air cools, up in the atmosphere, what is the weather like? cloudy and rain/snow may fall
Created by: lprinke