PAPER Topics

... like. We're going to into the Helium atom today. An atom is made of little things called protons, nuetrons, and electrons. Protons have a positive charge, neutrons have no charge, and electrons have a negative charge. Electrons travel around the center of the atom, which is called the nucleus. Kind of like how Earth revolves around the sun. Protons and nuetrons make up the center of the atom. The atom has an atomic number. Scientists find that number by counting how many protons are in the nucleus. In this case Helium has two protons. Scientists find the average atomic mass by adding up protons and neutrons many times. Then they divide the total by how many times they tried this. This ...

... enough energy to generate electricity. (World Book vol. 14, 586) Nuclear power plants generate only about eleven percent of the world’s electricity. There are around 316 nuclear power plants in the world that create 213,000 megawatts of electricity. (INFOPEDIA) Radioactive, or nuclear, waste is the by-product of nuclear fission. Fission occurs when atoms’ nucleus’ split and cause a nuclear reaction. (General Information) When a free neutron splits a nucleus, energy is released along with free neutrons, fission fragments that give off beta rays, and gamma rays. A free neutron from the nucleus that just split splits another nucleus. This process continue ...

... She is aware of the continuous presence of what she calls her "live-in companion," who answers to the name of Hweig. Mrs. Kannenberg realizes that Hweig would be explained away by conventional scientists in terms of split personality or some other form of mental abberation. Although she does not agree with this interpretation of her situation, she does not claim to have any paranormal abilities because of her contact with Hweig. She does not seek publicity, nor does she avoid it. She writes down dialogues and insights she finds to be of particular interest as they occur, and has given me permission to quote the following descriptions: There is th ...

... selective attention. Selective attention is the focusing on conscious awareness on a particular stimulus. (Reference) This means that at any moment we focus our awareness only on a limited aspect of all that we are capable experiencing. When I use selective attention my attention is on the coach and other players on the field. The coach or my teammates may be telling me something important about what I should do, or a player I should watch out for. My attention needs to be directed to what they are saying because it is important and is information I need to hear. There is also selective hearing. Selective hearing is hearing only what you choose to hear, and my selective hearing ...

... system and some usually have an on board camera. ROV's have been used for the last thirty years. They have been doing tasks that divers can't, do to Economical and safety reasons. A Submersible is a piece of machinery designed to do an underwater function. Submersible's and rov's are important to Marine biologists so they can study underwater creatures. Geologists can use them to find out more about the evolution of the Earth by studying the ocean floor. The ocean holds some minerals that are becoming scarce on the Earth's surface. If we can set up mining stations under the water it would also provide many jobs. Undersea manufacturing plants would be practical if lo ...

... and what they eat. In this respect, few other creatures have such catholic tastes or more ingenious methods of satisfying them as have s (Gilbert, 1991, p. 69). The list of what exactly the consumes is quite extensive. Eighty percent of their diet is rodents. However, they will eat pretty much whatever they can find. Watermelons are also a food source for this omnivorous and carnivorous species. As one of my sources puts it, the takes what it can get (Jones, 1999). Sheep, road kill, insects, domestic cats, apples and your garbage are all viable meals for the . In essence, the is a scavenger, an omnivore, and a carnivorous animal that will sometimes hunt in packs of ten to fiftee ...

... forest and brush fires, as well as millions of dollars in damage to buildings, communications systems, power lines, and electrical systems are also the result of . Finally, the threat of causes many work stoppages and lost production increasing the time and cost required to prepare NASA spacecraft for flight. Benjamin Franklin performed the first systematic, scientific study of during the second half of the 18th century. Prior to that time, electrical science had developed to the point where positive and negative charges could be separated. Electrical machines could, by rubbing together two different materials, store the charges in primitive capacitors called Leyden Jars from which spark ...

... revision of scientific terms changed it simply to "," while it still is called "Down's" in Europe. There are three main types of . The vast majority of children with (approximately 95 percent) have an extra 21 chromosome. Instead of the normal number of 46 chromosomes in each cell, the individual with has 47 chromosomes. This condition is called trisomy 21. The second type is called translocation since the extra 21 chromosome is attached or translocated on to another chromosome, usually on chromosome 14, 21 or 22. If translocation is found in a child with , it is important to examine the parents' chromosomes, since in at least one-third of the cases, a parent may be a carrier of the tra ...

... use is dropping rapidly although tin is still used a lot for plating. Plating such things as electical contacts. Tin is also used as a protective coating. This protective coating can be as small as 15/1,000,000 of an inch. This protective coating protects against rust on steel and other metals. A coating of tin also gives a great look to plain old steel. Tin cans for food prevents weak acids from damaging the inside of the can. Not many cans are made of tin since aluminum started to be used for cans tins use dropped sharply. Tin is also used to coat staples, pins, bronze bell, pewter pitchers and many others things. Another popular tin mixture is tin and lead. Tin and lead m ...

... impersonating ants, squirrels that look like shrews, worms copying sea anemones, and roaches imitating ladybugs. There are even animals that look like themselves, which can also be a form of impersonation. The phenomenon of mimicry, as it's called by biologists, was first noted in the mid-1800s by an English naturalist, Henry W. Bates. Watching butterflies in the forests of Brazil, Bates discovered that many members of the Peridae butterfly family did not look anything like their closest relatives. Instead they bore a striking resemblance to members of the Heliconiidae butterfly family. Upon closer inspection, Bates found that there was a major advantage in mimicking the Helic ...