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science chapter 15
atmosphere
| definition | term |
|---|---|
| is the condition of Earth’s atmosphere at a particular time and place. | Weather |
| The envelope of gases that surrounds Earth. | atmosphere |
| is made up of nitrogen, oxygen, carbon dioxide, water vapor, and many other gases, as well as particles of liquids and solids. | Earth’s atmosphere |
| is a form of oxygen that has three oxygen atoms in each molecule instead of the usual two. | Ozone |
| water in the form of a gas | Water vapor |
| makes conditions on Earth suitable for living things | Earth’s atmosphere |
| Like a heavy backpack pressing on your shoulders, the weight of the __________ causes air pressure | atmosphere |
| Because ___ has mass, it also has other properties, including _______ ___ ________. | air,density and pressure. |
| The amount of mass of a substance in a given volume. | density |
| The amount of force pushing on an area. | pressure |
| the result of the weight of a column of air pushing down on an area. | Air pressure |
| An instrument used to measure changes in air pressure. | barometer |
| 78% | nitrogen |
| 21% | oxygen |
| 1% | other gasses;argon, carbon dioxide, neon, helium, methane, krypton, and hydrogen. |
| consists of a glass tube open at the bottom end and partially filled with mercury. | mercury barometer |
| has an airtight metal chamber | aneroid barometer |
| is the distance above sea level, the average level of the surface of the oceans. | Altitude, or elevation |
| decreases as altitude increases. | Air pressure |
| As ___ ________ decreases, so does density. | Air pressure |
| Air at ___ _____ has more gas molecules in each cubic meter than air at the top of a mountain. | sea level |
| the inner, or lowest, layer of Earth’s atmosphere | troposphere |
| the inner, or lowest, layer of Earth’s atmosphere | troposphere |
| extends from the top of the troposphere to about 50 kilometers above Earth’s surface | stratosphere |
| Meso- means “middle,” so the __________ is the middle layer of the atmosphere | mesosphere |
| the layer of the atmosphere that protects Earth’s surface from being hit by most meteoroids | mesosphere |
| The outermost layer of Earth’s atmosphere | thermosphere |
| extends from 80 kilometers above Earth’s surface outward into space. | thermosphere |
| The lower part of the thermosphere. | ionosphere |
| the outer portion of the thermosphere | exosphere |
| harmful substances in the air, water, or soil | Pollutants |
| brown haze that develops in sunny cities | photochemical smog |
| rain that contains more acid than normal | acid rain |
Created by:
Jenstack
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