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Thoughts on Global Warming: Top 5 Worst Effects of Global Warming - 0 views

  • 1. Polar ice caps meltingThe ice caps melting is a four-pronged danger.First, it will raise sea levels. There is 5,773,000 cubic miles of water in ice caps, glaciers, and permanent snow. According to the National Snow and Ice Data Center, if all glaciers melted today the seas would rise about 230 feet. Luckily, that’s not going to happen. But sea levels will rise.Second, melting ice caps will screw up the global ecosystem. The ice caps are fresh water, and when they melt into the ocean, they make it less salty, or desalinize the ocean. The desalinization of the gulf current will screw up, to put it simply, the current. It will cool the area around north-east America and Western Europe. Luckily, that will slow some of the other effects of global warming in that area. But with the stream shutdown, the whole Atlantic ecosystem could be warped.Third, all the animals in the Arctic will be in danger because of a changing habitat.Fourth, global warming will accelerate with the ice caps gone. Ice caps are white, and reflect sunlight. Some of that sunlight is reflected back into space, further cooling Earth. If the ice caps are melted, only the dark-colored ocean will be there. Darker colors absorb sunlight, further warming the Earth.
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Polar bears drown as ice shelf melts - Times Online - 0 views

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    ice melting is killing the polar bears
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NOAA Scientists Say Arctic Ice Is Melting Faster Than Expected - washingtonpost.com - 0 views

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    rate of melting ice
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Is Global Warming Killing the Polar Bears? - WSJ.com - 0 views

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    polar bears effected to the melting ice caused by global warming
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5 Deadliest Effects of Global Warming: Global Warming Effects, Causes of Global Warming... - 0 views

  • Green house gases stay can stay in the atmosphere for an amount of years ranging from decades to hundreds and thousands of years. No matter what we do, global warming is going to have some effect on Earth. Here are the 5 deadliest effects of global warming.
  • As the temperature of oceans rises, so will the probability of more frequent and stronger hurricanes
  • global warming will exacerbate the conditions and could lead to conflicts and war.
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  • urricanes cause do billions of dollars in damage, diseases cost money to treat and control and conflicts exacerbate all of these.
  • The ice caps melting is a four-pronged danger.
  • First, it will raise sea levels.
  • Second, melting ice caps will throw the global ecosystem out of balance
  • Third, temperature rises and changing landscapes in the artic circle will endanger several species of animals. Only the most adaptable will survive.
  • ourth, global warming could snowball with the ice caps gone
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    pictures and descriptions
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    global warming
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NRDC: Global Warming Puts the Arctic on Thin Ice - 0 views

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    global warming effects
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WWF - Polar Bear - WWF: A Leader in Polar Bear Conservation - 0 views

    • keanu Dickinson
       
      Antartica is melting away its hard enough for every animals there how it is but now poeple are helping them die.
  • With 20-25,000 polar bears living in the wild, the species is not currently endangered, but its future is far from certain.
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The Energy Story - Chapter 15: Solar Energy - 0 views

  • Solar energy can also be used to make electricity.
  • solar power plants, like the one in the picture to the right in California's Mojave Desert, use a highly curved mirror called a parabolic trough to focus the sunlight on a pipe running down a central point above the curve of the mirror.
  • mirror focuses the sunlight to strike the pipe
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  • gets so hot that it can boil water into steam
  • team can then be used to turn a turbine to make electricity.
  • California's Mojave desert, there are huge rows of solar mirrors arranged in what's called "solar thermal power plants"
  • this idea to make electricity for more than 350,000 homes
  • problem with solar energy is that it works only when the sun is shining
  • cloudy days and at night, the power plants can't create energy.
  • solar plants, are a "hybrid" technology
  • daytime they use the sun
  • night and on cloudy days they burn natural gas to boil the water so they can continue to make electricity.
  • form of solar power plants to make electricity is called a Central Tower Power Plant, like the one to the right - the Solar Two Project.
  • Sunlight is reflected off 1,800 mirrors circling the tall tower
  • mirrors are called heliostats
  • move and turn to face the sun all day long
  • light is reflected back to the top of the tower in the center of the circle where a fluid is turned very hot by the sun's rays.
  • luid can be used to boil water
  • make steam to turn a turbine and a generator.
  • We can also change the sunlight directly to electricity using solar cells.
  • Solar cells are also called photovoltaic cells
  • PV cells for short
  • be found on many small appliances
  • calculators
  • even on spacecraft
  • first developed in the 1950s for use on U.S. space satellites
  • made of silicon, a special type of melted sand.
  • sunlight strikes the solar cell, electrons (red circles) are knocked loose
  • move toward the treated front surface (dark blue color)
  • electron imbalance is created between the front and back
  • two surfaces are joined by a connector, like a wire, a current of electricity occurs between the negative and positive sides.
  • individual solar cells are arranged together in a PV module and the modules are grouped together in an array.
  • arrays are set on special tracking devices to follow sunlight all day long.
  • electrical energy from solar cells can then be used directly
  • used in a home for lights and appliances
  • in a business
  • Solar energy can be stored in batteries to light a roadside billboard at night
  • energy can be stored in a battery for an emergency roadside cellular telephone when no telephone wires are around.
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    Solar/ thermal energy
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