Details Title: 11 Chapter Vocabulary Description: Chapter 11 Total Flash Cards: 28 Created: 02/23/2009 08:11:57		New Users: To study from this flashcard set, or to create your own your own study flash cards, REGISTER HERE. Existing Users: CLICK HERE. Additional Science Flashcards
Cards in this set: Term weather Definition the condition of earths atmosphere at a particular time and place Term Atomsphere Definition is the layer of gases that surround the earth Term ozone Definition a form of oxygen that has three oxygen atoms in each molecule instead of the usual 2 Term water vapor Definition water in the form of a gas (invisible) Term air pollution Definition a change to the atmosphere that has harmful effects Term emissions Definition solid particals and gases that are released into the air Term photochemical smog Definition a thick brownish haze that forms when certain gases react with sun light Term ozone Definition gases that react in the sunlight and produce a form of oxygen Term temperature inversion Definition a layer of warm air that prevents the rising air from escaping Term acid Definition rain that is more acidic than normal caused by the release of molecules of sulfur dioxide and nitrogen oxide into the air Term ozone layer Definition the layer of the atmosphere that contains a higher concentration of ozone than the rest of the atmosphere Term chloroflourocarbons (CFCS) Definition chlorine compounds formulary used in air conditioners, refrigerators and spray cans (gases that are responsible for the hole in the ozone layer) Term green house effect Definition the trapping of heat near the Earth's surface (trapped by water vapor, carbon dioxide and other gases that form a blanket around the Earth) Term global warming Definition the gradual increase in temperature of the Earth's atmosphere Term density Definition the amount of mass in a given volume of air Term pressure Definition the force pushing on an area or surface Term air pressure Definition the result of the weight of a column of air pushing down on an area Term barometer Definition an instrument that is used to measure changes in the air pressure Term mercury baramoter Definition consists of a glass tube open at the bottom and practically filled with mercury. The space in the tube above the mercury is almost a vacuum - it contains no air. The open end of the tube rests in a dish of mercury. Air pressure pushing on the mercury in the dish forces the mercury in the tube higher. Term aneroid barometer Definition an instrument that measures change in air pressure with out using a liquid. Changes in the shape of an air-tight metal box, cause a needle on the barometer dial to move. Term altitude Definition elevation above sea level Term troposphere Definition the lowest layer of Earth's atmosphere where weather occurs Term stratosphere Definition the second lowest layer of Earth's atmosphere; the ozone layer is located in the upper stratosphere Term mesosphere Definition the middle layer of Earth's atmosphere; the layer in which most meteoroids burn up. Term thermosphere Definition the outer most layer of Earth's atmosphere. Term Ionosphere Definition the lower part of the thermosphere where electrically charged particles called ions are found. Term Aurora-borealis Definition a colorful glowing display in the sky caused when particles from the sun strike oxygen and nitrogen atoms in the ionosphere; also called the Northern Lights. Term exosphere Definition the outer layer of the thermosphere, extending outward into space.