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AS and A Level: Hazardous Environments

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  • Marked by Teachers essays 8
  • Peer Reviewed essays 2
  1. Suggest why droughts have severe impacts on people and the environment.

    The final cause of droughts, is down to the human race, and their lifestyle demand for extra water to fulfil their needs, this puts extra pressure on supplies. The great Drought of China during 1876-1879 was one of the deadliest droughts in the worlds recorded history; no food at all could be grown on 386,000 square miles of farmland across nine provinces of northern China. Rivers were dry, so most crops and livestock died. An estimated nine million people died.

    • Word count: 3418
  2. comparing shrewsbury an old town an telfrd a purpose build new town

    In Telford no-one travelled between 6-10 or 16-20 miles to get to Telford. Four people travelled between 0 and 5 miles, six people travelled between 11 and 15 and 1 person travelled 21 or more miles. Question 3 "What is your purpose of being here today?" in Shrewsbury no-one travelled for business, leisure or historical architecture. One person said that they were just visiting; two people travelled to Shrewsbury for other and eight people went to Shrewsbury for its leisure facilities. In Telford no-one travelled for business or other. Two people business and for leisure, three people travelled for Telford's shopping facilities and four people said that they were just visiting.

    • Word count: 3927
  3. The first will be about Health and Safety at Graham School. The second will be about Health and Safety at Scarborough Sixth Form College and the last will be about Health and Safety at CP Kelco's Knowsley Plant. The aims of this report

    Accidents in the places where scientists work are rare. This is because scientists must follow strict regulations and procedures. These are aimed, successfully are reducing the risk of harming or damaging themselves or people near to them in the workplace. Hazards and scientific place include: * Careless behaviour. * Not using equipment properly. * Not using protective and safety equipment. * Not following correct Health and Safety at Graham School Risk Assessments The risk assessments they have at Graham School and Scarborough Sixth Form are given have eleven headings.

    • Word count: 3038
  4. Volcano Assessment.

    Mallet did not know why this was and it was not until the 1960's that the puzzle was solved and scientists found an explanation. This became known as the theory of plate tectonics. ('Tectonic' is a Greek word that means 'building'). This theory says that the Earth's crust (or the lithosphere) is actually split into 20 or so moving pieces which fit together like a jig-saw. The chunks of moving earth are called tectonic plates; there are 7 huge plates: Pacific North American South American African Eurasian Indian Antarctic and about 12 smaller ones and they move at about the same rate as our fingernails grow.

    • Word count: 4095
  5. Earthquake is a shaking of the ground caused by the sudden breaking and shifting of large sections of the earth's rocky outer shell.

    Stresses in the earth cause large blocks of rock along a fault to strain, or bend. When the bending becomes too much, the rock breaks and snaps into a new position, causing the shaking of an earthquake. Earthquakes usually begin deep in the ground. The point in the earth where the rocks first break is called the focus, also known as the hypocentre, of the quake. The focus of most earthquakes lies less than 70 kilometres beneath the surface, though the deepest known focuses have been nearly 700 kilometres below the surface.

    • Word count: 3232
  6. Mount St. Helens - Natural disasters.

    Helens and was at the time the British Ambassador to Spain. He had also named three other volcanoes in the cascades; Mounts Baker, Hood, and Rainier. What is the history of eruptions at Mount St.Helens? St. Helens has erupted 23 times before 1831, after that it has erupted in 1835, 1842, 1847, 1848, 1849, 1853, 1854, and 1857. In the last 515 years, it is known to have produced 4 major explosive eruptions Two of the major eruptions were separated by only 2 years.

    • Word count: 11348
  7. California and the Phillippines - Hazard Hotspots and Human Management of Risks

    Disasters on this scale occurred annually throughout the 1980s, and the potential for such disasters is increasing. Human activity is implicated in the rising number of hazardous events. For example, the disastrous floods and landslides of November 1991, though triggered by intense rainstorms (typhoons), have been blamed primarily on logging on hill slopes. Hazard 1: Earthquake: California haza1 012.jpg One of the hazard California suffers from is earthquakes. They suffer from this because California lies on a conservative plate boundary.

    • Word count: 3190
  8. Volcanic and seismic events are major pieces of evidence towards proving that plate-tectonics theory is valid Discuss the extent to which you agree with this statement. [40 marks]

    4.2). Along a noncliffed shoreline (such as the Atlantic coasts of North America and Africa), the land usually slopes gently toward the sea. This gently sloping land, some of which may be above sea level and some below, is called the continental shelf or platform. At the edge of the continental shelf there is commonly a sharp drop-off to the steeper continental slope. At the bottom of the steep continental slope, the land begins to level off again. This more gently sloping land is called the continental rise; it marks the transition to the much flatter ocean floor, called the abyssal plain.

    • Word count: 5892

Conclusion analysis

Good conclusions usually refer back to the question or title and address it directly - for example by using key words from the title.
How well do you think these conclusions address the title or question? Answering these questions should help you find out.

  1. Do they use key words from the title or question?
  2. Do they answer the question directly?
  3. Can you work out the question or title just by reading the conclusion?
  • Volcanoes are more dangerous hazards than earthquakes - Discuss the truth of this statement.

    "In conclusion I believe that the statement 'volcanoes are more dangerous hazards than earthquakes' to generally be false. Although earthquakes can be prepared for a lot better than volcano eruptions, earthquakes are less easy to predict and cause a substantial amount more damage. Earthquakes are also more frequent and usually affect a larger area and can also cause tsunamis, floods, fires, landslides and the liquefaction of soil. Iden Ranapour 1"

  • The extent to which earthquakes are hazardous depends on where and when they are experienced

    "To conclude, the key spatial and temporal factors listed above leads me to believe that the extent to which earthquakes represent hazards DOES depend on where and when they are experienced. In particular, 'where' factors such as level of development and rural-urban disparities as well as 'when' factors such as time of day and time between hazards are crucial in determining the extent of damage caused by an earthquake. However every earthquake is different and it is only when a combination of the above elements come together does an earthquake become a real hazard. After all, it is estimated that over 1,400,000 earthquakes occur annually with only up to 100 of those deemed to be potentially hazardous."

  • Volcanoes are more dangerous hazards than earthquakes discuss the truth of this statement.

    "Both hazards are deadly and ruin both property and human life; however volcanoes in my opinion are more dangerous than earthquakes. Earthquakes although cannot be predicted can be protected against saving thousands of lives. Volcanoes although can be predicted cannot be defended against, even if towns are evacuated they are still destroyed creating huge humanitarian and economic problems. Accurate volcano prediction if in place isn't always linked up with towns in danger; this makes the prediction useless anyway. Finally Volcanoes also have lasting implications; their secondary effects such as lahars can be felt for generations."

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