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Search results 641 - 650 of 1576 matching essays
- 641: Nuclear Waste Management
- ... from the biosphere for thousands of years or longer. Disposal in mined vaults does not require the use of advanced technologies, rather the application of what we know today. It is possible to locate mineral, rock, or other bodies beneath the surface of the earth that will not be subject to groundwater intrusion. A preferred place would be at least 1,500 feet below the earth's crust, so that it ...
- 642: Natural Resources and Management
- ... landscapes. These nonrenewable resources often yield unique information about past societies and environments, and can provide answers for modern day social and conservation problems. a ship wreck an arrowhead a canon an Indian campsite Indian rock art a tin can a Victorian house an historic mining town an irrigation canal a dam All of these can be cultural resources. Cultural resources are the physical remains of a people's way of ...
- 643: Malibu Fires
- ... end, the fire was moving quickly towards Topanga Canyon. "By Ten P.M., the fire had burned just north of Malibu on the west and had burned through Carbon Canyon, Rambla Pacifico, Las Flores, Big Rock and into Tuna Canyon on the east (Firestorm 1993, p.4 sec. 1)." After burning fiercely throughout most of the afternoon, the intensity of the fire diminished significantly in the late evening hours of November ...
- 644: Energy Flow Systems
- ... in the Columbia River, holding the glacial lake Missoula, broke and created the largest known freshwater flood in earth's history. The flood rushed into the Columbia Channel and created the Grand Coulee and other rock channels that would have taken the Mississippi River three hundred years at full flood to create. Salmon are also a part of the Colombian energy model. As the river works its way downward to the ...
- 645: Deciduous Forests
- ... amount of organic nutrients in the soil are important a-biotic factors that can affect the ability of any species to thrive in an area. The northern side also contains a high concentration of large rock, virtually not present in the Tulip side. This indicates that there is a difference in the soil construction, given that soil is produced by the break down of local parent material. This lab showed how ...
- 646: A Discussion On Earthquakes
- ... up of seven major plates and approximately thirteen smaller ones. The name plate is used to describe these portions of the earth's crust because they are literally plates or sections, composed of dirt and rock. These plates float on molten lava, called magma. Since the plates are floating on magma, they can slowly move. The place where friction occurs between plates is called a fault. A fault is a crack ...
- 647: Platinum
- ... C, boils at about 3827° C, and has a specific gravity of about 21.45. The atomic weight of platinum is 195.09. Platinum ranks about 72nd in natural abundance among the elements in crustal rock. Except for the mineral sperrylite, which is platinum arsenide and is found rarely in a only a few places, platinum occurs in the metallic state, often alloyed with other platinum metals. Nuggets of the metal ...
- 648: Nuclear Weapons
- ... of inhaling Pu-239 is much different then inhaling radionuclides like decaying particles from radon. Radon is a radioactive gas the can cause cancer. (Ref 6) it comes for the decaying of uranium in soil, rock, and water. Inhaling this substance can damage your lungs and lead to cancer over time. Anyone who lives in homes, works in an office, or goes to school can be effected by the gas. Radon ...
- 649: Magnesium
- ... 6H2O). Magnesium is an active metal. Magnesium burns easily in air, making a bright white light. Magnesium is an important element for improving the working characteristics of aluminum and zinc. It makes them easier to roll and machine. Magnesium is also flammable at temperatures characteristic of burning gasoline so its use as a structural metal is limited. Insoluble magnesium carbonate and magnesium sulfate, together with insoluble calcium compounds occur in "hard ...
- 650: Effects of Dam Building
- ... carry water which flow over thier crests, because of this they must be made of materials which do not erode. Non-overflow dams are built not to be overtopped, and they may include earth or rock in their body. Often, two types of these dams are combined to form a composite structure consisting of for example an overflow concrete gravity dam, the water that overflows into dikes of earthfill construction. A ...
Search results 641 - 650 of 1576 matching essays
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