air masses & fronts
the amount of possible air masses in the U.S
what is four?
a map showing the state of the weather over a large area
what is a weather map?
steam-like movements of water that occur at or near the surface of the ocean
what is the definition of a surface current?
movements of ocean water far below the surface
what are deep currents?
a large volume of air in the atmosphere that is mostly uniform in temperature and moisture
what is an air mass?
the L stand for on a weather map?
What is a low pressure
winds that blow across the surface of Earths oceans
what are global winds?
water density
what controls deep currents movements?
when a cold air mass moves under a warm air mass
what is a cold front?
the H stand for on the weather map?
What is high pressure
global winds, Coriolis Effect, and continental deflections
what causes surface currents?
the density of ocean water increases and sinks toward the bottom of the ocean
how are deep currents formed?
what weather follows after a warm front
What is clear, warm weather
forms when a cold air mass and a warm air mass move toward each other
what is a stationary front?
when surface currents meet continents, and deflect
what are continental deflections?
cold ocean water, and high salinity
what makes a deep current?
Formed when a warm mass is caught in between two cold air masses
how is an occluded front formed?
Chicago has a snow storm, the front is over it
What is a cold front?
deflection of moving objects from a straight path because of Earths rotation
what is the Coriolis effect?
the deepest and densest water in the ocean
what is Antarctic Bottom Water?