atmosphere composed of? How do pressure and density vary with altitude? What are the characteristics of the major layers of the atmosphere? Important Terms atmosphere air pressure barometer troposphere weather stratosphere ozone layer mesosphere thermosphere ionosphere aurora At 8848 meters (29‚030 feet) above sea level‚ Mount Everest is the highest mountain in the world. In 1952 Edmund Hillary‚ a New Zealand mountaineer‚ and Tenzing Norgay‚ a mountain guide from Nepal‚ became
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the bulk of the earth’s atmosphere: nitrogen (78%)‚ and oxygen (21%). Argon‚ carbon dioxide and various trace gases make up the remainder. Scientists divided the atmosphere into four layers according to temperature: troposphere‚ stratosphere‚ mesosphere‚ and thermosphere. The temperature drops as we go up through the troposphere‚ but it rises as we move through the next layer‚ the stratosphere. The farther away from earth‚ the thinner the atmosphere gets. 1.TROPOSPHERE This is the layer of
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atmosphere of Earth is a layer of gases surrounding the planet Earth that is retained by Earth’s gravity. The atmosphere protects life on Earth by absorbing ultraviolet solar radiation. A. Nitrogen - 78% - Dilutes oxygen and prevents rapid burning at the earth’s surface. Living things need it to make proteins. Nitrogen cannot be used directly from the air. The Nitrogen Cycle is nature’s way of supplying the needed nitrogen for living things. B. Oxygen - 21% - Used by all living things. Essential
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solid is controlled by both temperature and pressure. When a solid is heated‚ it losses strength. When it is compressed‚ it gains strength. Differences in temperature and pressure divide the mantle and crust into three strength regions. The Mesosphere: In the lower part of the mantle the rock is so highly compressed that it has considerable strength even though the temperature is very high. Thus a solid region of high temperature but also relatively high strength exists within the mantle from
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1 COMPONENTS AND SUBCOMPONENTS OF ENVIRONMENT 1.1 CLASSIFICATION OF ENVIRONMENT The term Environment can be broadly defined as one’s surroundings. To be more specific we can say that it is the physical and biological habitat that surrounds us‚ which can be felt by our physical faculties (seen‚ heard‚ touched‚ smelled and tasted.) The two major classifications of environment are : (A) (B) Physical Environment: External physical factors like Air‚ Water‚ and Land etc. This is also called the Abiotic
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Stratosphere Space Shuttle Endeavour appears to straddle the stratosphere and mesosphere in this photo. "The orange layer is the troposphere‚ where all of the weather and clouds which we typically watch and experience are generated and contained. This orange layer gives way to the whitish Stratosphere and then into the Mesosphere."[1] Atmosphere diagram showing stratosphere. The layers are to scale: from Earth’s surface to the top of the stratosphere (50km) is just under 1% of Earth’s radius
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1. Crust: The Earth’s surface is composed mostly of water‚ basalt and granite. Oceans cover about 70% of Earth’s surface. The Earth’s thin‚ rocky crust is composed of silicon‚ aluminum‚ calcium‚ sodium and potassium. The crust is divided into continental plates which drift slowly (only a few centimeters each year) atop the less rigid mantle. The crust is thinner under the oceans; this is where new crust is formed. Continental crust is about 25-90 km thick. 2. Mantle: Under the crust is the rocky
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Test bank for Blue Planet 3e Chapter 3 Essay questions (2) 1. Explain how the chemical composition of a mineral controls its crystal structure. 2. Some minerals contain economically important elements. If you were prospecting in the field‚ what tools would you carry to help you identify different minerals? Fill in the blank (18) 1. The three common ------ of matter with which we are most familiar in our everyday lives are solid‚ liquid‚ and gas. 2. --------- are homogeneous masses
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True/False On the line provided‚ indicate whether each statement is true (T) or false (F __T_ 1. The grassland biome is characterized by a prolonged dry season. _F__ 2. The taiga biome is found in North America‚ Asia‚ and Africa. __F_ 3. In the desert biome‚ the rate of precipitation exceeds the rate of evaporation. __F_ 4. The taiga and a plant cell are both examples of closed systems. __T_ 5. If the climate changes‚ the species that are best adapted to the new conditions are
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The atmosphere of Earth is a layer of gases surrounding the planet Earth that is retained by Earth’s gravity. The atmosphere protects life on Earth by absorbing ultraviolet solar radiation‚ warming the surface through heat retention (greenhouse effect)‚ and reducing temperature extremes between day and night (the diurnal temperature variation).The common name given to the atmospheric gases used in breathing and photosynthesis is air. Dry air contains roughly (by volume) 78.09% nitrogen‚ 20.95% oxygen
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