moving of the ice is called glaciation. The evidence of these glacial and interglacial cycles was found in deep sea sediments. These large glaciers molded the land creating lakes and rivers in its path. The temperatures varied greatly between the glacial and interglacial periods. As research shows temperatures affect the wind and ocean currents. This in turn affects the amount of precipitation and dryness around the world. When the glaciers present a land bridge called the Bering Strait (Figure 1.4)
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This snowball earth is dubbed as “Marinoan” because of glacial sediments found in South Australia by famous Antarctic explorer and geologist‚ Sir Douglas Mawson. Sedimentary deposits from this global glaciation are found on almost every continent which supports the hypothesis that all the continents were once altogether. The oldest ice age was about 2.2 billion years ago‚ which is roughly the half the age of the Earth. The glacial sedimentary deposits were mostly in South Africa but this is
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Project 1: My Physical Geography My name is Thomas and I Study Journalism at Uconn. What makes me unique is that I play the didgeridoo. What I would like to get out of taking this class is a better understanding of what the world is made of and how people live in there part of the globe. I am from Bedford‚ New York. Bedford is about an hour north of New York City. 2. Weather and Climate: Bedford New York is located in North Eastern United States. The average temperature there is around
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faded due to erosion and chemical processes. Scientists have been able to put together a detailed picture of the last 20‚ 000 years of climatic history‚ and a general picture of the past 150‚000. Although the evidence is less complete further back in time‚ scientists have been able to identify major‚ often catastrophic climatic events throughout Earth’s 4.5 billion year history. Evidence for climate change can be preserved in marine and lake sediments‚ ice sheets‚ fossil corals‚ glacial deposits‚ sedimentary
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Reading Assignment: Chronicles of Ice Summary: In Chronicles of Ice‚ Gretel Ehrlich sets out to “learn whatever lessons a glacier has to teach”‚ and to share what she has learned with us‚ as readers. The lesson the author relays to us is that the fate of the glacier is inextricably linked to that of the biological health of the Earth itself. Ehrlich uses the glacier as a device to show both cause and effect of the declining health of the Earth’s climate. The gases and particulate trapped in the ice
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One major component of environmental degradation is the depletion of the resource of fresh water on Earth. Approximately only 2.5% of all of the water on Earth is fresh water‚ with the rest being salt water. 69% of the fresh water is frozen in ice caps located on Antarctica and Greenland‚ so only 30% of the 2.5% of fresh water is available for consumption.[3] Fresh water is an exceptionally important resource‚ since life on Earth is ultimately dependent on it. Water transports nutrients and chemicals
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effect on the environment. Entire Himalayan region is prone to rain-induced hazards in the form of flash flood‚ cloudburst or glacial lake outburst flood. Many Himalayan natural hazards are earthquakes‚ tsunamis‚ hurricanes‚ flooding‚ coastal erosion‚ etc. An earthquake is a process that results from a sudden release of stored energy that radiates shock waves. Coastal erosion is a physical process by which seashores in coastal areas around the world shift and change‚ primarily in response to waves
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four spheres Hydrosphere - dynamic mass of liquid that is always on the move Oceans - the most prominent feature of the hydrosphere 71% of Earth’s surface is covered by ocean which is 97% of Earth’s water Only 3% is fresh water - streams‚ lakes‚ glaciers and underground supplies Water Cycle - constantly recycles water Atmosphere Provides us with the air we breathe Protects us from the sun’s intense heat and radiation Protects us from space Biosphere Includes all life on Earth Interacts and influences
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astounding scenic views. Yosemite is known for its many geologic features and landscapes. Yosemite Valley is one of the most beautiful qualities within the park‚ which is a mile-wide‚ 7-mile-long canyon that was cut by a river then widened and deepened by glacial action over time (National Geographic‚ 2016). Not very many national parks have a variety of topographies like Yosemite does‚ which is one of the many reasons why the park is nothing less than spectacular. The land that we now know as Yosemite National
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consumption. The equation is expressed: I = P x A x T (I = Environmental impact‚ P = Population‚ A = Affluence‚ T = Technology) This paper is a written mathematical explanation that will explore the environmental sustainability principles of glacial melting in Alaska‚ global warming‚ and Arctic range. The concepts of how these environmental changes effect the human ability to enhance ecosystem services will be explored. The normal increase in temperature is only one degree throughout
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