Study Guide-Weather
Chapter 3 Section 1 & 2
Know:
Cold, dry air affecting the northern United States in winter often comes from continental polar air masses.
When a rapidly moving cold air mass overtakes a slow-moving warm air mass, the result is a cold front.
When a warm air mass and a cold air mass meet and neither can move the other, the result is a stationary front.
Weather associated with an “HIGH” is generally dry and clear.
A funnel-shaped cloud that touches Earth’s surface is called a tornado.
Scientists who study weather and try to predict it are called meteorologists.
When a warm air mass overtakes a cold air mass, it forms a warm front.
Thunderstorms form within large cumulonimbus clouds.
Hurricanes typically form over warm ocean water.
The eye of a hurricane is calm.
In the continental United States, air masses are commonly moved by jet streams and the prevailing westerlies.
A “dome” of water that sweeps across the coast where a hurricane lands is called a storm surge.
A large amount of humid air that cools below 0°C can produce a winter snow storm.
Know weather map symbols:
a cold front a warm front; moving east
moving south
an occluded front
a stationary front; not moving
A maritime polar cool and humid air B continental polar air mass will bring cold dry air
C maritime polar
Location X is likely to get lake-effect
snow
A tornado is likely to occur at Y
F, maritime tropical
E continental tropical D maritime tropical
.
Know what to do in a thunderstorm
You and a friend are hiking in the wilderness when you become caught in a thunderstorm. What should you do?
You should not seek shelter under a tree, because lightning may strike the tree. To avoid being struck by lightning, you should find a low area away from trees and crouch with your head down.