Atmosphere Homework Describe the composition of the air Air is a mixture of gases and aerosols that compose the atmosphere surrounding Earth. The primary gases of air include nitrogen (78%) and oxygen (21%). Trace gases and aerosols make up the remaining 1% of air. The trace gases include the noble gases argon‚ neon‚ helium‚ krypton and xenon‚ hydrogen and the greenhouse gases. The aerosols are solid or liquid particles having diameters in the region of 0.001 to 10 microns‚ and include dust
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States of America. 2 3 4 5 6 7 8 9 10 027/043 09 08 07 06 05 04 NASA/Science Photo Library/Photo Researchers i-01-LBI-861758 8/23/04 3:20 PM Page iii Authors Susan Leach Snyder Education Division Washington‚ D.C. Dinah Zike Earth Science Teacher‚ Consultant Jones Middle School Upper Arlington‚ OH Educational Consultant Dinah-Might Activities‚ Inc. San Antonio‚ TX Series Consultants CONTENT READING ACTIVITY TESTERS William C. Keel‚
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Kristel Mae Tagle Bs BIOLOGY III Planet Earth Earth is the third planet from the sun. The place where many organisms exist‚ enhance with the beauty of nature. Packed with rich biodiversity‚ streams and rivers. Have you seen this place before? Maybe yes‚ but for how long? How much it matter to us if it is lost? What can we do to save them? Those are questions that that will hopefully strike our nerves. In this new millennium‚ many changes have occurred that altered the condition of the nature
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There are many different layers within the Earth. The core is at center of the Earth. The Earth’s core takes up sixteen percent of Earth’s volume‚ containing thirty-three percent of its Mass ..Pressure rises steadily inside the earth because of the weight of overlying rock. Therefore ‚the Pressure at the outer boundary of the core reaches 1.37 million atmospheres‚ 3.7 million Atmospheres. The core is made mostly of iron and nickel and possibly smaller amounts of lighter elements including sulfur
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soil will vary geographically and at different soil depths. Moisture content changes seasonally‚ varies according to the nature of the sub layers of earth‚ and the depth of the permanent water table. Since soil and water are generally more stable at deeper strata‚ it is recommended that the ground rods be placed as deep as possible into the earth‚ at the water table if possible. Also‚ ground rods should be installed where there is a stable temperature‚ i.e. below the frost line. For a grounding
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crust). The lower mantle runs slowly‚ at a rate of a few centimeters per year. 3. Core: The Earth has an iron-nickel core that is about 2‚100 miles in radius. At the core-mantle boundary‚ composition changes. Seismic waves suggest this material is of a very high density (10-13 g/cm3)‚ which can only correspond to a configuration of metals rather than rock. The presence of a magnetic field around the earth also indicates a molten metallic core. Unlike the crust and the mantle‚ we don’t have any samples
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Earth in Danger Nobody can negate that a lot of phenomena has been changed in our world recently while wondering the reason of these changes. One of the main reason for a lot of change in our life is the rapped raise on temperature which is called global warming. Global warming is the rise in the average temperature of Earth’s atmosphere and oceans since the late 19th century and its projected continuation. Since the early 20th century‚ Earth’s mean surface temperature has increased by about 0.8
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O.E. Rölvaag’s thesis in the novel Giants in the Earthis well hidden throughout the text of the novel‚ but his purpose is very clear. The purpose of the book is to give the reader a full experience of how life was like for an immigrant to start all over again in an unknown‚ unexplored habitat. It also furnishes the reader with the knowledge of the hardship and consequences that the alien settlers dealt with on the prairie. The topics that Rölvaag writes about in the novel are those
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MAN OF EARTH Amador T. Daguio (January 8‚ 1912-1967) obtained his M.A. in English at Stanford U. as a Fulbright scholar. In 1954‚ he obtained his Law degree from Romualdez Law College in Leyte. Daguio was editor and public relations officer in various offices in government and the military. He also taught for twenty-six years at the University of the East‚ U.P.‚ and Philippine Women’s University. In 1973‚ six years after his death‚ Daguio was conferred the Republic Cultural Heritage Award. The poem
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Help the Earth “Be Green”‚ “Be Environmental”. Slogans like this are posted all around the world. Charity groups also have been promoting this idea for years. But have we been doing this? Do we really know why we are doing this? Every once in a while‚ government give out orders banning shops and markets from providing plastic bags to customers‚ but this doesn’t last for a long time. Plastic bags are very popular‚ because they are cheap‚ strong‚ easy to bring around and convenient. But have
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