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Chapter 7 Test 7th
Chapter 7 Test 7th and 8th
Term | Definition |
---|---|
Atmosphere | A blanket of gases that surrounds our planet to protect and support life in many ways. |
Water Vapor | The gaseous form of water. |
Ozone | A relatively scare type of oxygen molecule in which 3 oxygen atoms or bonded. (O3) |
Stratosphere | The layer I immediately above the tropopause, stretches from the tropopause to an altitude of about 31 mi. |
Mesosphere | The layer immediately above the stratopause, the begins to drop more altitude increases, extends 53 mi, least understood layer. |
Thermosphere | Layer above the mesosphere extends from 53 mi to 300 mi. |
Cosmic Rays | Extremely powerful radiation that comes from deep space. |
Magnetic Field | The region in which the magnet effects other objects. |
Van Allen Radiation Belt | Region where solar wind particles are trapped in a region that looks like a belt or doughnut that is encircling the earths equator. |
Albedo | The decimal equivalent of solar radiation reflected by an object. |
Energy Budget | Amount of energy available to heat earths land, water, and air. |
Convection Current | Currents set into motion by moving currents of hot air or of other fluids. |
Up Drafts and Down Drafts | Vertical movements of air. |
Adiabatic Cooling | Occurs because molecules spread out, resulting with fewer collisions. |
Adiabatic Heating | A gas being compressed the temperature of gas rises as the gas is compressed with no heat lost. |
Hadley Cell | The convection cell that exists between the equator and latitude 30* |
Ferrel Cell | High pressure warm air at latitude 30* and 60*it creates a low pressure region creating winds that come from latitude 30* and 60* |
Polar Cell | When newly warmed air rises to flow back to the poles. |
Cyclone | Circulating spiral around a low in northern hemisphere. (Rotates counter clockwise). |
Anticyclone | A wind system around a high in northern hemisphere. (Rotates clockwise). |
Doldrums | A belt where there are often calms or light breezes. |
Trade Winds | The surface winds that blow from the high pressure regions of the horse latitudes towards the equator. |
Polar Easterlies | The high pressure regions created by the constantly sinking air at the poles cause winds to blow away from the poles towards the lower latitudes. |
Prevailing Westerlies | Blows towards the poles, they "outrun" the earths surface so that they come out of the southwest and northwest. |
Rossby Waves | Upper troposphere waves. |
Sea Breeze | Cooler air from over the water blows inland. |
Fall Wind | Occurs when dense, cold air flows from higher to lower elevations due to gravity's pull. |
Chinook | Foehns on the east side of the Rocky Mountain. |
Santa Ana | A very dry and dusty wind that blows in Southern California. |
Nitrogen | The Most abundant gas in the homosphere. |
Troposphere | The atmosphere's "weather layer". |
3 Types of UV Radiation | UVA, UVB, UVC |
Mesopause | The atmosphere's coldest point. |
Exosphere | The atmosphere's outermost layer. |
PSI at Sea Level | 14.7 atmospheric pounds per square inch. |
Water Vapor | Most important green house gas. |
Winds | Horizontal movements of air. |
Jet Streams | Strong, narrow winds in the upper tropopause. |
Foehns | The general name for a dry wind that travels down a slope. |
Why do mountains stay snow capped over the summer ? | Because as you go higher the weather gets colder preserving the snow. |
Land Breeze | A gentle wind that blows from land to sea. |
4 Things That Effect Insolation | Cloudy Weather by as much as 85%, length of daytime, the angle of the suns rays, and earths distance from the sun. |