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5 Deadliest Effects of Global Warming: Global Warming Effects, Causes of Global Warming... - 0 views

www.environmentalgraffiti.com/...276
shared by Erika Moz on 08 Dec 08 - Cached
  • 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.
  • ...6 more annotations...
  • 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
  • Katie M on 08 Dec 08
     
    pictures and descriptions
  • Erika Moz on 10 Dec 08
     
    global warming
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Dead dog as art - Opinion - 0 views

media.www.navigatornews.org/...Dead-Dog.As.Art-3364594.shtml
shared by Paloma Gomez on 09 Dec 08 - Cached
  • When asked to provide an explanation for his actions Vargas claimed that this so called "art exhibit" was his way of paying respect to his friend who had died recently after he was attacked by two Rottweilers guarding a shop which his friend had been burglarizing.Upon reading through a few of the comments and blogs, I found that there were several threats against the artist, saying that he should be tortured and allowed to die just as the dog. However, no one mentions anything about the spectators. I am in no way defending Vargas's actions, I am however disgusted at the idea that no one attempted to rescue the dog. Pictures show people standing close enough to get a good look yet far enough away to escape any responsibility for the suffering the dog was clearly enduring. The stray dog is more alive today then he was the day he stood as a spectacle of suffering and selfishness. This story has gotten the attention of people everywhere, and rightfully so
    • Paloma Gomez
      Paloma Gomez on 09 Dec 08
       
      tell alittle bit of the reason the so called artist tied up the dog and tell that the dog is still living today
  • What everyone is forgetting is that the controversy around this is exactly what he was getting at with his statement everyone cares about a dog that was going to starve on its own anyways, nobodys cares about the millions of people starving around the world every day or even the dogs starving in his home country its like everyone just saw the words starving dog and immediatly jumped to death threats
    • Paloma Gomez
      Paloma Gomez on 09 Dec 08
       
      other people believe that what the so called artist did was a good way to make a statement
  • Paloma Gomez on 09 Dec 08
     
    tell alittle bit of the reason the so called artist tied up the dog and tell that the dog is still living today
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Skydiving-Guide.com - History of skydiving - 0 views

www.skydiving-guide.com/history.htm skydiving-guide.com
shared by robert meeker on 04 Dec 08 - Cached
    • robert meeker
      robert meeker on 04 Dec 08
       
      best site yet!!!!!!
    • robert meeker
      robert meeker on 04 Dec 08
       
      very good web site
  • Eventhough parachutes seem to have been used in China since the 1100s and that Leonardo da Vinci of Italy had invented devices similar to parachutes nowadays, worldwide skydivers state that the French inventor AndrĂ©-Jacques Garnerin is the one to make the first parachute. In 1797 he jumped from a balloon over Paris using a parachute and kept on making other jumps in France and also in England.
  • In World War I , that is between 1914 and 1918, the military began using parachutes in their missions
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  • Barnstormers, who were in fact aerial showmen, fired the imagination of aviators and skydivers after World War I. The barnstormers showed airborne performances and parachute jumps and travelled every year throughout the United States. Competitions began as a result of the increase of parachuting awareness. The first contest of accuracy landing was held in 1930 in the Union of Soviet Socialist Republics (USSR).
  • The military used paratroopers in World War II , that is between 1939 and 1945. The paratroopers were parachute-equipped soldiers and had the most famous use on D-Day, the invasion of Normandy (Normandie), France, on June 6, 1944
  • The surplus of nylon parachute equipment after World War II and the fact that the U.S. Army had started the first military sport parachuting clubs, set the grounds of skydiving in the United Dtates, as a pleasant and relaxing activity. The same thing happened in many other countries, and thus , the first parachuting world championships were organized in 1951 in Yugoslavia.
  • Little by little, in the mid 1960, systems specially made for sport parachutes took the place of the military surplus systems. Parachutists started to call this activity skydiving and calling themselves skydivers. In order to improve the opening characteristics and to make them more maneuverable, there were a few sport modifications to military parachutes. A French Canadian kite builder, Domina Jalbert, developed in 1964 the the ram-air design, that has set the tendencies for parachutes in skydiving from then on.
  • Sport skydivers constantly tested new and revolutionary designs and materials. Apart from sport uses , there have also been designed sport-generated designs like military HAHO (high altitude, high opening) designs, smoke jumping designs and many types of equipment for two-person and four-person tandem jumping. The military HAHO designs allowed soldiers to silently fly over large areas. The smoke jumping designs aimed to put firefighters into remote forest fires from low altitude.
  • Skydiving has kept on becoming more and more popular after the late 1980s, and this is because the equipment, that is reliable, lightweight, and easy-to-operate, picture this sport as accesible to many people. The U.S. president George H. W. Bush also jumped , thus increasing the popularity of skydiving.
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Find Dinosaur Pictures - Illustrations of Dinosaurs - Dinosaurios - Dinosaur Art - 0 views

www.search4dinosaurs.com
shared by cory delacruz on 04 Dec 08 - Cached
  • cory delacruz on 04 Dec 08
     
    gives me illistrations of dinosaurs
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The Energy Story - Chapter 15: Solar Energy - 0 views

www.energyquest.ca.gov/...chapter15.html energy thermal resources
shared by Kate L on 03 Dec 08 - Cached
  • 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
  • ...35 more annotations...
  • 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.
  • Kate L on 03 Dec 08
     
    Solar/ thermal energy
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