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Move. in Atmosphere
Chapt. 12 Bob Jones 8th Grade
| Question | Answer |
|---|---|
| When a warm air mass is trapped between two colliding colder air masses, what front is formed | occluded front |
| Winds that seasonally reverse direction, particularly in SE Asia are called | monsoon |
| A large body of air that has fairly uniform conditions | air mass |
| In meteorology, a region wiht relatively uniform temperature and humidity over which air masses form | source region |
| occur(s) when a warmer air mass is replacing a colder air mass | warm front |
| a line of violent thunderstorms | squall line |
| occur between the doldrums and the horse latitudes | trade winds |
| a low pressure belt located in the region of the equator | doldrums |
| often has an anvil-shaped top | thunderhead |
| cloud-to-ground or cloud-to-cloud electrical discharge | lightning |
| The huge wave that form out in the ocean and precede the arrival of a hurricane are called the | storm swell |
| A branched stepped leader causes | forked lightning |
| Global winds that drive weather in most of the continental United States and blow from SW to NE between 30 degrees and 60 degrees N & S latitude | prevailing westerlies |
| Land absorbing the sun's energy more rapidly than water | sea breeze |
| An air mass that is warmer than the surface over which it moves | warm air mass |
| An air mass that is colder than the surface over which it moves | cold air mass |
| a zone of contact between two dissimilar air masses where neither is advancing. It usually results in no change in the weather for several days | stationary front |
| The advancing surface of a cold air mass as it moves under a warmer air mass | cold front |
| The horizontal force exerted on a mass of air that has a higher pressure on one side than on the other | pressure gradient force |
| Winds blowing consistently from NE to SW from the Northern polar region, bringing cold, dry, air to the Northern parts of North America, Asia, and Europe | polar easterlies |
| An area of high atmospheric pressure at either pole caused by subsiding cold air | polar high |
| A high-altitude wind that is controlled by the relative influence of the pressure gradient force and the Coriolis effect | geostrophic winds |
| A high-speed meandering wind current, usually flowing from W to E at altitudes of 15 to 25 km (10 to 15 mi.). Its speed often exceeds 400 km/h (250 mi/h). | jet stream |
| A large increase in sea level along the shore in front of and below a hurricane as high winds pile water up against the land, often causing catastrophic flooding and erosion. | storm surge |
| A metal rod attached to the highest point of a building that prevents damage to the building from a lightning strike by conducting the electrical discharge through cables to the ground | lightning rod |
| A breeze that blows from shore to sea, usually at night | land breeze |
| A breeze that blows up the mountainside from the valley when air high on the mountain heats and rises. Usually occurs late in the day. | valley breeze |
| A breeze that flows down the mountain into the valley at night that is caused by cooling air at higher elevations | mountain breeze |
| Bands of nearly permanent high pressure at approximately 30 degrees N or S latitude caused by descending cold air. | horse latitudes |
| A rainstorm that includes lightning and thunder | thunderstorm |
| The prevailing low-pressure belt at approximately 60 degrees N or S latitude. In the Northern Hemisphere the prevailing westerlies rise above the polar easterlies, lifting air in this zone | subpolar low |
| Prior to a lightning stroke, a zigzag column of highly ionized air that establishes that channel for subsequent lightning discharges and return strokes | stepped leader |
| A lightning discharge from the ground up to a cloud along the ionized path taken by the original strike from the cloud to the ground | return stroke |
| A violent, narrow, rotating, funnel-shaped local windstorm containing the highest wind speeds measured, extending down from a cumulonimbus cloud | tornado |
| A tornado that occurs at sea | waterspout |
| In the Atlantic and Eastern Pacific oceans, a strong, large-area cyclonic storm with wind speeds exceeding 117 km/h (73 mi/h) | hurricane |
| What hurricanes are called in the Western Pacific ocean | typhoon |
| What hurricanes are called in the region of the SW Pacific and Indian Ocean regions | cyclone |
| The circular center of low pressure in a hurricane that is characterized by few clouds, relative calm, and vertical air movement | eye |
| A weather system centered on a low pressure area surrounded by a wind circulation pattern spiraling counter clockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere. | cyclone |
| An area of realatively high atmospheric pressure. It typically contains a clockwise-rotating wind system in the Northern Hemisphere | anticyclone |
Created by:
trippj4253@aol.com
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