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Chapter 12 Vocaburly
| Question | Answer |
|---|---|
| Weather | the condition of earths atmosphere at a paticualar time and place. |
| atmosphere | the envelope of gases that surrounds earth |
| ozone | a form of oxygen that has 3 oxygen atoms in each molecule instead of the usual 2. |
| water vapor | water in the form of a gas |
| photochemicial smog | a brownish haxe that is a mixture of ozone and other chemicals formed when polluntants react with each other in presence sunlight. |
| acid rain | rain that contains more acid than usual |
| pressure | the force exerted on a surface divided by the total area over which the force is exerted. |
| air pressure | the pressure caused by the weight of a column of air pushing down on a area. |
| barometer | a intstrument used to measure changes in air pressure. |
| mecury barometer | a instrument that measures changes in air pressure consisiting of a glass tube pertially filled with mecury, with its open and resting ina dush of mecury. |
| aneroid baromjter | a instrument that measure changes in air pressure without using liquid. |
| altitude | elevation above sea level |
| jet stream | bands of high speed winds about 10 klm above earths surface |
| trososhpere | the lowest layer of earths atmosphere |
| stratosphere | the 2nd lowest layer of earths atmosphere |
| mesosphere | the layer of earths atmosphere immediantly above the straosphere |
| thermosphere | the outer most layer of earths atmosphere |
| ionisphere | the lower part of the thermosphere |
| exosphere | the outer layer of the thermosphere |
| electromagnetic wave | waves that can transfer electric and magnetic energy trough the vacum of space. |
| radiation | the direct transfer of energy through space by electromeagnetic waves. |
| infarred radiation | electrmagnectic waves with wavelengths that are longer than visible light but shprter than microwaves. |
| ultraviolet radiation | electromagnetic waves with wavelengths that are shorter than vivsible light but longer than X-rays. |
| scattering | reflection of light in all directions |
| thermal energy | the total energy of motion in the particles of a substance. |
| conduction | the process by which molecules of water vapor in the air become liquid water. |
| convection | the transfer of thermal energy by the movement of a fluid. |
| wind | the horizantal movement of air from an area of high pressure to an area of lower pressure. |
| anemometer | an instrument used to measure wind speed |
| wind-chill factor | a measure of cooling combining temperture and wind speed |
| local wind | winds that blow over short distances |
| sea breeze | the flow of cooler air from over an ocean or lake toward land. |
| land breeze | the flow of air fro land to a body of water |
| global wind | winds that blow steadily from specific directions over lond distances |
| latitude | the distnace in degrees north or sout of the equator. |
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