crystals‚ spores‚ bacteria‚ viruses and a plethora of other microscopic particles‚ which may be natural or man-made. Why are trace gases important? The most important gases in the Earth’s atmosphere are the greenhouse gases. Most abundant in the troposphere‚ these gases include carbon dioxide‚ methane‚ nitrous oxide‚ water vapour and ozone‚ so called because they are involved in the Earth’s natural greenhouse effect. This keeps the planet warmer than it would be without an atmosphere. Apart from water
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Planet Earth contains three compositional layers- CORE‚ MENTLE & CRUST. Core: At the centre is the densest of the three layers‚ the core. The core is a spherical mass‚ composed largely on metallic iron‚ with lesser amount of nickel and other elements. Mantle: The thick shell of dense‚ rocky matter that surrounds the core is mantle. The mantle is less dense than the core but denser than the outer most layer‚ the crust. Crust: Above the mantle lies the thinnest and outermost layer‚ the crust
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variable amount of water vapor‚ on average around 1%. While air content and atmospheric pressure vary at different layers‚ air suitable for the survival of terrestrial plants and terrestrial animals currently is only known to be found in Earth’s troposphere and artificial atmospheres. The atmosphere has a mass of about 5×1018 kg‚ three quarters of which is within about 11 km (6.8 mi; 36‚000 ft) of the surface. The atmosphere becomes thinner and thinner with increasing altitude‚ with no definite boundary
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Chapter 17 Vocab * Acid deposition- the settling of acidic or acid-forming pollutants from the atmosphere onto Earth’s surface. * Acid rain- Acid deposition that takes place through rain. * Aerosols- very fine liquid droplets or solid particles aloft in the atmosphere. * Air pollutant- gases and particulate material added to the atmosphere that can affect climate or harm people or other organisms. * Air pollution- the act of pollution the air‚ or the condition of being polluted
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The layers of Earth How do scientists know what is in the center of the earth? How can we know what the core of the earth is made of‚ if scientists have never studied any materials from a depth below 7.5 miles? Earth is approximately 4.6 billion years old‚ and over this time period‚ many things have changed inside and out. The formation of our planet is quite amazing. Earth consists of multiple layers. The three most distinct or main layers are the core‚ mantle and crust. The inner portion is
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gravitational pull that is around 2.5 times stronger than earth’s pull. To put that into perspective‚ if you weigh 100 pounds on earth you would weigh 250 pounds on Jupiter. The atmospheric layers are the troposphere‚stratosphere‚thermosphere and exosphere. The lowest layer ‚ the troposphere ‚ is covered in clouds and gases like ammonia and high levels of hydrogen. Jupiter’s atmosphere is well known for being a leading contributor to two of the raging
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It is tri atomic oxygen (03) and is a gas found in the troposphere as well as in the stratosphere. Tropospheric ozone is undesirable since it is a pollutant these‚ causing photochemical smog and greenhouse effect. In the stratosphere‚ it acts as a protectant since‚ (i) It absorbs the dangerous UV-radiations (ii) It helps to trap the weather pattern within the troposphere‚ by generating a temperative inversion in the stratosphere. Tropospheric ozone is increasing due to human activities‚ while
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1.8 1. Pressure decreases with higher altitudes. Pressure decreases at a decreasing rate with an increase in altitude until‚ beyond an altitude of about 35 kilometers‚ the decrease is negligible. 3. Troposphere‚ stratosphere‚ mesosphere‚ thermosphere. All of our weather occurs in the troposphere 4. The temperature increases in the atmosphere because it absorbs ultraviolet radiation from the Sun
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Article on Natural environment Natural environment The natural environment encompasses all living and non-living things occurring naturally on Earth or some region thereof. It is an environment that encompasses the interaction of all living specie. The concept of the natural environment can be distinguished by components: Complete ecological units that function as natural systems without massive human intervention‚ including all vegetation‚ microorganisms‚ soil‚ rocks‚ atmosphere and natural phenomena
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odorless mass of air surrounding the earth. It is a combination of gases and particles enveloping the globe. The earth’s atmosphere has a layered structure: • The troposphere: All weather and related process take place in the troposphere. It consists of all weather systems that produce precipitation and surface winds. The troposphere extends from ground level to about 15-17 km above the equator. • The Stratosphere: The stratosphere extends from 10-50km above the earths surface. • The mesosphere:
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