Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
19 Cards in this Set
- Front
- Back
|
Weather
|
short-term changes in temperature, barometric pressure, humidity, precipitation, sunshine, cloud cover, wind direction and speed, and other conditions in the troposphere at a given place and time
|
|
|
Front
|
Boundary between two air masses of differing temperatures and densities
|
|
|
Warm front
|
Boundary between warm front and cold front it is replacing; Warm air is less dense than cool air so it rises over cold front
|
|
|
Cold Front
|
leading edge of advancing mass of cold air; produces thunderheads
|
|
|
What produces thunderheads?
|
Coldfronts
|
|
|
Dew point
|
temperature level drops below certain point where condensation takes place
|
|
|
What are the two main factors in determining a regions climate?
|
Average Temperature and Average Precipitation
|
|
|
What are the four major factors that determine global air circulation?
|
Uneven heating of the earth's surface, seasonal changes in temperature and precipitation, rotation of the earth on its axis, and properties of air, water, and land.
|
|
|
Trace the pattern of El Nino Southern Oscillation
|
tropical trade winds blowing westward weaken or reverse, warming up surface water along South and North American coasts, suppressing normal upwellings of cold, nutrient-rich water. Decrease in nutrients reduces primary productivity and causes decline in some aquatic populations.
|
|
|
What are the greenhouse gases?
|
Water vapor (H20), carbon dioxide (C02), methane (CH4), nitrous oxide (N20)
|
|
|
Greenhouse effect
|
natural warming of troposphere caused by ultraviolet and infrared radiation caused by greenhouse gases
|
|
|
Rainshadow effect
|
Lower precipitation and arid or semiarid conditions on leeward side of high mountains
|
|
|
Biome
|
Terrestrial region with characteristic types of natural ecological communities adapted to the climate of each region; not uniform, 'mosaic of patches'
|
|
|
What causes variations in climate and vegetation?
|
Latitude and altitude
|
|
|
Desert
|
Area where evaporation exceeds precipitation
|
|
|
Grasslands or prairies
|
regions with enough annual precipitation to support grass
|
|
|
Chaparral
|
dense growths of low-growing evergreen shrubs and occasional small trees with leathery leaves
|
|
|
epiphytes
|
plants that use only moisture in the air and sunlight to grow without soil
|
|
|
Hadley cells
|
circulation pattern that dominates the tropical atmosphere, with rising motion near the equator
|
