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15 Cards in this Set
- Front
- Back
The earths atmosphere is heated in two ways; What are they?
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1.When gasses absorb radiation from the sun
2.when gasses absorb heat given off by the oceans, and heat the surface of the earth thats absorbed from the sun. |
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Energy from the sun travels through space as radiation. How fast does it travel?
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300,000 km/s
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The do different types of radiation have;?
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different wavelengths
(gamma,xrays,uv,visible,infrared,microwave,radio) |
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How does the atmosphere affect radiation?
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1. Nitrogen and Oxygen in the thermosphere absorb XRAYS, GAMMA, and UVRAYS
2.The stratosphere absorbs UV RAYS creating ozone |
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What is reflection?
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Reflection occurs when light changes direction as a result of "bouncing off" a surface like a mirror.
20% of radiation 30% is reflected or scattered 50% is absorbed by the surface by the surface of the earth. |
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When you feel the warmth of the sun you are feeling_______?
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Infrared Radiation
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What is the process in which the earth heats its self?
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1. Infared radiation passes through the upper atmosphere
2.Infrared is absorbed by the surface. 3.The surface gives off heat by engergy 4. Carbon dioxide and water vapor. ( if there is extra carbon dioxide in the air the more heat energy can be absorbed) |
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How warm the atmosphere becomes in any region on the earths surface depends on several factors. What are they?
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1.Latitude-Closer to the equator, higher the sun angle.
2.Elevation-Higher elevations are colder 3.Land and water-cools and heats faster than water. 4.Delay in heating-It takes time in the day for land to heat. |
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Most heating of the atmosphere comes from radiation. A small amount comes from conduction and convection. What happens?
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1. Land heats air by conduction
2.Air circulates heat by convection |
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1.What happens when there is high pressure air?
2.What happens when air flows from the poles? |
1.High air pressure flows to low pressure
2.when air flows from the poles it goes to the equator of the surface |
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What is the coriolis effect?
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The earths surface dragging air.
Northern hemisphere-winds deflect to the right southern Hemisphere-Winds deflect to the left |
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What are 2 of the major windbelts?
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1.Trade Winds-Winds flowing towards the equator between 30 derees and 0 degrees latitude
a. Northern hemisphere-northeast b.Southern hemipshere-southeast. 2.Doldrums-Where the trade wind system of the northern and southern hemisphere meet at the equator. (low pressure belt) |
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What are the other 2 wind belts?
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3.Horse Latitudes-a belt of high pressire in the vicinity of 30 degrees latitude. Created by descending are.
4.Westerlies- Wind belt in both the northern and souther hemipshere.(michigans windbelt) Nothern hemisphere-South west Southern Hemipshere-Noth west *Continental united states located here. |
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What are the three major pressure zones?
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1.Polar easterlies-Created by polar high winds deflected by the coriolis effect.
2.Sub polar lows-Created by the westerlies and the easterlies coliding. Storms regions. 3. Polar high- cold air sinking at the poles. |
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Because of the different seasons________________________________________________?
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The pressure zones shift slighty during a year.
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