...In Henry Wadsworth LongFellow's poems "A Psalm Of Life" And "The Tide Rises , The Tide Falls ". both have In common the topic of death and life .In "A psalm of Life" . he explains how death shouldn't be something to look forward to, life should be. In "The tide rises , The Tide Falls", he addresses life As waves , because it has it has Its ups And downs . The difference between both poems is That one of them is positive towards living life . And The second poem is reflecting life as well as admitting defeat to Death. In Long Fellow's Perspective as young man in "A Psalm Of life" is different compared to when he becomes A mature adult .His perspective is Different in the way he talks , about living life with few consequences . For Example , "Is Our Destined end Or Way ; But To act , that each tomorrow" He is arguing that we have to live today , and enjoy life. In Longfellow's perspective as a mature adult "The Tide Rises , The Tide Falls", Is different to when he was young his life experience when he wrote the poem and he understands the meaning of living life and doing towards death . In which he quoted "The tide Rises, the Tide falls, The Twilight Darkens the curlew calls", he describes death as a curfew and having to do whats right which is...
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...Tides The Earth’s waters move back and forth every-day, causing currents and tides. Tides are the daily or twice daily rise and fall of the oceans. Tides are caused by the gravitational pull of the moon and sun on the ocean. The rise and fall of tides causes water to move in and out of estuaries, bays and harbors. This movement is called a tidal current. When the tide is rising, water flows from the ocean into the bay creating a flood current. When the tide falls, water flows from the bay back into the ocean creating an ebb current. The highest tides, called spring tides, are formed when the earth, sun and moon are lined up in a row. This happens every two weeks during a new moon or full moon. Smaller tides, called neap tides, are formed when the earth, sun and moon form a right angle. This causes the sun and moon to pull the water in two different directions. Neap tides happen during a quarter or three-quarter moon. I once went fishing with my dad at the beach and the tides were really low. We had to wait until the next morning to get a nice high tide to be able to catch any fish. The low tide waves were so far away that the fishing line barely went out. This is my personal connection because tides make a big impact on people who love to fish. Normally, fish like to be away from shore so if the tide is low, there wouldn’t be any fishes. My life does not depend on tides, however; but the fishes...
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...University of Phoenix Material Earth’s Dynamic Ocean and Atmosphere I Worksheet From Visualizing Earth Science, by Merali, Z., and Skinner, B. J, 2009, Hoboken, NJ: Wiley. Copyright 2009 by Wiley. Adapted with permission. Part 1 Sections 12.1 and 12.2 of the text discuss the origin and composition of the world ocean’s seawater. 1. What is the current theory on the evolution of the world ocean?the theory of the earth’s ocean, is possibly the earth was formed between 4 and 4.56 billion years ago. The most ancient grain discovered was a mineral grain of zircon in the middle of west austraillia. That element shows to have made contact with water, but the origin of the water is still unkown. 2. Discuss the origin of the salinity of seawater and how the ocean maintains salinity. The salinity of the ocean is created after the seawater evaporates. At that point three quarters of dissolved matter becomes sodium chloride. (table salt). The ocean maintains its salinity because it constantly receives fresh water from parcipitation and river flow. Often times other elements parcipitate out of mineral form and settle to the seafloor. As a result the composition of the seawater does not change. Part 2 Surface currents obtain their energy from the wind blowing over the surface waters. The currents do not exactly follow the wind direction because of an apparent force known as the Coriolis force. Using Figure 12.11 from the text, briefly explain surface currents of...
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...WIND: Winds are caused by differences in air pressure. They move from areas of high pressure to low pressure. Differences in air pressure are caused by unequal heating of the atmosphere. Cool air has higher air pressure so it flows underneath the warm, less dense air. Winds that blow over short distances and are caused by unequal heating of Earth’s surface within a small area. Waves Waves start in the open ocean The size of a wave depends on the strength of the wind, the length of time that it blows, and the distance over which it blows Waves move energy, not water. The water in a wave does not actually move forward, just the energy generated by the wind. The wind affects the water at the surface more than it does the deep water. As waves approach the shore, the water becomes shallower. The bottom of the waves begin to touch the sloping ocean floor. Friction between the ocean floor and the water causes the waves to slow down. As the speed of the wave slows down the shape of the wave begins to change Near the shore wave length decreases and wave height increases. When the wave reaches a certain height, the crest of the wave topples. CURRENT: A current is a large stream of water that flows through the ocean Two types of currents Surface Currents Driven mainly by the wind They follow Earth’s major wind patterns which move in a circular pattern Due to the Coriolis effect, currents...
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...What is the brightest and most noticeable object in our sky? If someone had asked you this question; your answer would be the Sun. Now your answer to the question is correct but, aside from the Sun, the Moon is also the brightest and most noticeable object in our sky. The Moon is Earth’s only natural satellite. The Moon is a roughly spherical, rocky body that orbits the Earth and its diameter is about one-fourth Earth’s diameter (“Moon”). This object does more than orbits the Earth and light up the night sky. The Moon goes through a lunar phase, cause eclipses, and has a strong effect on Earth’s tides, but before the Moon could do this it had to be formed. How did our Moon form? There is a strong hypothesis suggests that it formed as the result...
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...* Which of the following is not a general difference between a planet and a star * All planets are made of rock and all stars are made of gas. * Our solar system consists of _________. * the Sun and all the objects that orbit it * A typical galaxy is a _________. * collection of a few hundred million to a trillion or more stars, bound together by gravity * Which of the following best describes what we mean by the universe? * The sum total of all matter and energy * What do astronomers mean by the Big Bang? * The event that marked the beginning of the expansion of the universe * What do we mean when we say that the universe is expanding? * Average distances between galaxies are increasing with time. * Based on observations of the universal expansion, the age of the universe is about _________. * 14 billion years * A television advertisement claiming that a product is light-years ahead of its time does not make sense because _________. * it uses "light-years" to talk about time, but a light-year is a unit of distance * The term observable universe refers to _________. * that portion of the universe that we can see in principle, given the current age of the universe * On a scale in which the distance from Earth to the Sun is about 15 meters, the distance from Earth to the Moon is _________. * small enough to fit within your hand * On a scale where the Sun is about the size of a grapefruit and...
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...Where there are berries, there are bears and lots of birds. More than 300 species of birds use the island and surrounding waters at least part of the year. Summer brings some of the lowest daytime tides revealing tide pools with a colourful array of bizarre marine life. Visit during a full or new moon to take advantage of the lowest tides and the greatest variety of marine life. Snorkelling the lush eelgrass forests or wading through the sparkling phosphorescence at night are magical experiences not to be missed. Summer days are never too hot with a sea breeze nearby, comfortable ocean and lake swimming, icy rivers to dip in, cool snowfields to hike in the mountains and refreshing caves to explore. Alpine flower meadows peak in July and August, popping up as the snow...
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...The power of the rise and fall of the sea level or tidal power, can be harnessed to generate electricity. Tidal Power Tidal power traditionally involves erecting a dam across the opening to a tidal basin. The dam includes a sluice that is opened to allow the tide to flow into the basin; the sluice is then closed, and as the sea level drops, traditional hydropower technologies can be used to generate electricity from the elevated water in the basin. Some researchers are also trying to extract energy directly from tidal flow streams. The energy potential of tidal basins is large — the largest facility, the La Rance station in France, generates 240 megawatts of power. Currently, France is the only country that successfully uses this power source. French engineers have noted that if the use of tidal power on a global level was brought to high enough levels, the Earth would slow its rotation by 24 hours every 2,000 years. Tidal energy systems can have environmental impacts on tidal basins because of reduced tidal flow and silt buildup. 3 Ways of Using the Tidal Power of the Ocean There are three basic ways to tap the ocean for its energy. We can use the ocean's waves, we can use the ocean's high and low tides, or we can use temperature differences in the water. 1 Wave Energy Kinetic energy (movement) exists in the moving waves of the ocean. That energy can be used to power a turbine. In this simple example, (illustrated to the right) the wave rises into a chamber...
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...Tides and the Moon Name AST/101 Date Teacher Tides and the Moon I was recently tasked with examining the relationship between the Earth’s moon and the Earth’s tides. I took that to mean literally: how are the tide levels of Earth’s bodies of water affected by the Moon? When approaching this question I want to do so with the scientific method in mind. The scientific method refers to a body of techniques for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge (Goldhaber & Nieto, 2010). The scientific method is a way to ask and answer scientific questions by making observations and doing experiments. It is also a good tool when we are searching for cause and effect relationships in nature. We already know the primary question being asked: How are the bodies of water on Earth affected by the Moon? To begin to answer our primary question we next ask: what causes tides? There are several kinds of tides. The ones that break upon a beach every 10 seconds to a minute are caused by sea level disturbances out in the ocean produced by such things as storms. Also the various circulation currents of sea water can have velocity components directed toward the land which will bring water up onto the beach. As this water travels toward the beach from deep water to shallow water, its amplitude will increase until it finally “breaks” as a full-fledged breaker, suitable for surfing, etc. Underlying this minute to minute activity is a slower...
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...contains ninety seven percent of the earth’s water and covers almost three quarters of the planet. There are four different oceans, the Pacific, Atlantic, Indian, and the Arctic. Tides and currents occur in all three of these oceans. Many different kinds of fish and mammals also make their homes in these oceans. All of these oceans are connected to each other in some way. Humans find oceans to be very interesting, beautiful, and exploring. All oceans contain salt water and other minerals. The Pacific Ocean has the largest body of water in it. It spreads nearly halfway around the world. The Pacific Ocean is also the deepest ocean out of all four oceans. The Atlantic contains the second largest body of water. Next is the Indian Ocean, which is on the borderline of being a big ocean and a small ocean. Last is the Arctic Ocean, which by all means is the smallest ocean of them all, and the shallowest. Tides are common features of the ocean. Tides occur when large bodies water rise and fall, because of the gravitational pull of the moon and the sun. Spring tides are especially strong tides; in spite of the name they have nothing to do with the season spring. They occur when the Earth, the sun, and the moon are in a line. Spring tides occur during the full moon and the new moon. Neap tides are especially weak tides. They occur when the gravitational forces of the moon and the sun are perpendicular to one another. When water moves from side to side, it is called a current. Currents move...
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...Imagine a place where you can sit on the beach as the waves roll in; the smell of the sea and fresh fish cooking in the distance at a nearby restaurant. A place where you can experience a thrill of blasting over the sand dunes at high speeds in a buggy, visit aquariums, and see wildlife up close. Imagine a place of relaxation, watching the whales migrate across the ocean. A place like this can only be one of a kind, the Oregon coast. The Oregon coast would be a great place to spend a vacation, it’s inexpensive and relaxing. So how much would it cost to go to the Oregon coast? What kinds of attractions would one be able to see? Is there stuff for the kids to do as well as adults? What kind of food do you get to eat when you go to the cost? These are all great questions that you ask yourself before planning a trip anywhere. When planning a trip you will want to figure out what the area has to offer. This will give you a sense of where you what to go and when. I enjoy the thrill of adventure and enjoy traveling to places. I have never been to the Oregon coast, so I decided to plan a trip there and find out what attractions they have to offer me. By googling “the Oregon Coast” the first website that I came across was the “Oregon Coast Visitors Association” link (Oregon Coast Visitors Association, 2008). This website’s home page displayed a slide show of pictures of the coast and a map that you are able to click on different areas to find out more information. I clicked...
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...wide area which results in a weak backwash. Destructive waves Destructive waves have a large wave height and short wave length. They have tall breakers that have a high downward force and a strong backwash. Their frequency is high with between 13 and 15 waves per minute. Their strong downward energy helps erode beach material and cliffs. The strong backwash results in narrow beach profiles. Tides Tides are the rise and fall of sea levels. Tides are caused by the gravitational pull of the moon and to a lesser extent the sun. When the earth, the moon and sun are aligned the gravitational pull is at it’s greatest. This creates a Spring tide. A Spring tide results in a high, high tide and low, low tide. This creates a high tidal range (difference between the highest and lowest tide) and results in stronger tidal currents than normal. Spring tides usually occur twice a month when there is a full moon. When the sun and moon are at a right angle to the earth we experience Neap tides. The gravitational pull of the sun partially cancels the moon’s. This results in a low, high tide and a high, low tide. This creates a low tidal range and results in weaker tidal currents than normal. Sub-Aerial Processes Sub-aerial process are land based processes which alter the shape of the coastline. These are a combination of weathering and mass...
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...The red tide dinoflagellate Karenia brevis produces marine neurotoxins known as breve toxin and have killed large amounts of fish. They have also been known to cause illness to humans through consumption of shellfish or inhaling toxic aerosols. Breve toxin can act as a vector and transmit illness from one organism onto another through the food chain. Fish and sea grass can contain large amounts of breve toxins that are detrimental to marine life. As a result, manatees are susceptible to toxins from the red tide and have resulted in many deaths. For example, thirty four endangered manatees in Florida died in the spring in 2002 with low amounts of breve toxins present. In a prior event where one hundred and forty nine manatees died, lung pathology revealed the presence of breve toxins. “[T]he absence of similar pathology excluded the possibility of poisoning through aerosol exposure, and the high toxin concentrations measured in the stomach contents indicated that the toxin was from a dietary source” (Flewelling, 755). The presence of breve toxins in sea grass and fish contaminated food have affected those on the upper trophic levels. It has resulted in large numbers of casualties in marine mammals, primarily affecting Florida manatees and...
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...emus were laying eggs. They used Scorpius to travel from one clan to another, they would select a pointer star to follow when traveling at night. The Aboriginal calendars are more complex than European, and was based on six seasons. Aboriginal people mark the seasons using stars which only appear during those seasons, they knew the rising of the Pleiades in May announces the start of winter. When Tagai appeared, it meant that it was time to travel and prepare plantation before the rainy season. The appearance of Scorpius marked the end of the rainy season. The Yolngu people are very good at understanding the motions of the Moon, and the relationship with tides. The Aboriginal people believe when its high tide, the Moon fills with water. And when tides fall, the Moon loses water, and the Moon is empty for three days. Then tides rise again and it continues. The Wirangu people believe eclipses are caused by the Sun and Moon making love. There are aboriginal engravings which may represent constellations. We now use constellations to see patterns in the sky, their way of astronomy differed from ours, because they used cultural ideas to represent it. The aboriginal people saw an emu in the sky (the creators wife), the Coalsack nebulae, they also saw 3 brothers in a boat, the Orion Constellation. They also found, Venus never moves far from the Sun, they thought it was bound by rope, it is gravity. Overall Aborigines used a lot of astronomy in their lives. The validity of the CSIRO...
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...typically occurs from May to October in lower salinity areas of the Chesapeake Bay. After mating, males remain in these lower salinity areas. However, because blue crab larvae require high salinities for proper development, females will begin moving south to the spawning grounds near the mouth of the Chesapeake Bay and near-shore coastal areas. Periods of peak spawning (larval release) along the Mid-Atlantic Bight have typically been documented from late July through August. After spawning, many females use flood tides to return to the lower estuary, where they may produce subsequent broods, but do not move back into lower salinity zones. Some mature females may also move into near-shore and offshore coastal waters after spawning. The Chesapeake Bay is a large estuary and for many crabs the distance between mating areas the spawning grounds can be considerable (> 100 km). Peak spawning typically occurs in the late summer; therefore, crabs beginning to migrate in the early fall may not be able to spawn that year. According to a study, in which, blue crab were tagged, released and recaptured, it appears that most female blue crabs in the upper Chesapeake Bay appear to begin the spawning migration in the...
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