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Essays on Science

Devastation Of The Rain Forests
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... environment, especially the rainforest of South America. In the end, the destruction of the rainforests will mean the destruction of mankind. The devastation of the rainforest may be compared to playing a game of Russian Roulette. One-forth of existing medicines comes from tropical plants whose homes are in the rainforests of South America. For every acre that is lost in the burning season, there is one acre less that we have for possible life saving medicines. About 70 percent of plants used in anti- cancer drug come are the rain forest. We are slowly destroying the environment and ourselves. Whether we realize it or not, the world could quickly come ...



Compatisome Of Upper And Lower Rock Shores Pools
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... colonise the area. The lower rock pool generally contained different species which could out compete the organisms of the upper pool when in a more benign environment. The rock pools studied should both contain organisms specially adapted to live in the intertidal environment of the rock pools. The organisms need to be adapted to the microenvironment of the rock pool, as conditions are considerably different to those of a ‘normal’ marine environment. The rock pools spend some of their time completely submerged by the sea and other times exposed to the air. When exposed the organisms of the rock pool are part of a much smaller body of water than normal. This smaller ...



Life Of Octopus Dofleini
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... Reproduction takes place as follows: The male octopus uses his tentacle to take a mass of spermatophore from within his mantle cavity, he then inserts it into the oviduct, in the mantle cavity of the female. This process occurs at depths from 20-100m and, lasts hours. With female octopuses receiving spermatophore up to 1m long. Female octopus seem to prefer larger males as mates and male octopus may mate with more than one female in their life span, however the male octopus only lives a few months after breeding, and the female will die shortly after the eggs hatch. Incubation can take from 150 days to seven or more months. The female may produce any where f ...



Solar Oven
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... cubes and shavings will absorb the heat in the box and store the excess heat allowing the flow to continuously warm the oven. The tin foil will reflect heat and subsequently heat up the oven. The polyurethane material will trap the heat inside the oven. The mirrors will help the heat stay inside the box. Materials used: Shoe Box Tin Foil Sheets of Glass Charcoal Cubes and Shavings Scissors Glue Knives Polyurethane Non-Glossy, Black Spay Paint Four (4) Wood Pegs Mirrors Sealer ...



An Investigation Into Electrical Resistance
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... of electricity, such as silver or copper, may have a conductivity billions of times as great, or more, as the conductivity of a good insulator, such as glass or mica. Method We were set the task of investigating the factors that come into play when determining the resistance of a piece of wire. We would be provided with the necessary apparatus needed to carry out the investigations. The basic setup would involve a circuit with a set of cells connected in series with an ammeter and the piece of wire being investigated, and a voltmeter connected in parallel with the wire. The ammeter is placed in series with the wire. An ammeter has a low resistance, so tha ...



Cloning
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... doesn't a Si-Fi movie come to mind. Like when they take a nucleus, place it in a egg, put the egg in a incubator, and when it hatches it's an exact replica of the original being (Lawren). Though this has been done with frogs it has not yet been accomplished with mammals (Lawren). Another way to make a clone, as they do in the cattle buisness, is to split the cells of a early multi-celled embryo which will form two new embryos (Lawren). For it to get started into practice it took more than fifty years of questioning and testing. The first successful cloning experiment involved a leopard frog. It took place in, 1952 with group of scientist from the Institu ...



Pesticides Are Affecting Our F
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... eat, and the liquids they drink are all contaminated by pesticides. According to the Natural Resources Defence Council, “pesticide exposure to adverse health effects including cancer, birth defects, reproductive harm, neurological and development toxicity, immunotoxicity, and disruption of the endocrine system.” Children are more likely to be affected by pesticides than adults because, they are strange eaters, they breath at a higher rate, and tend to spend more time on the ground were chemicals may settle and then enter a child’s body through breathing, orally, by touching something with a residue and then putting their fingers in their mouth, and through a chi ...



Computer Viruses
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... Viruses are designed to replicate and to avoid detection. In recent years have caused a great deal of damage to personal computers and computer systems around the world. The damage can be extensive; mostly due to the loss of time spent recovering the infected data. A computer virus in a system is one of the worst things that can happen to a computer user. Still, many specialists insist that it is possible to use the replication mechanism of for some useful and beneficial purposes. In this paper I will examine the question of why computer users consider to be a bad thing and why they reject the idea of having a computer virus serve a good purpose. I will also ex ...



Black Holes
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... If a body is electrically charged or rotating, Schwarzschild's results are modified. An "ergosphere" forms outside the horizon, within which matter is forced to rotate with the black hole; in principle, energy can be emitted from the ergosphere. According to general relativity, gravitation severely modifies space and time near a black hole. As the horizon is approached from outside, time slows down relative to that of distant observers, stopping completely on the horizon. Once a body has contracted within its Schwarzschild radius, it would theoretically collapse to a singularity—that is, a dimensionless object of infinite density. Formation ...



The Laser
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... made the device they had to name it. They had think of some word or words to described it. They came up with Light Amplification by Stimulated Emission of Radiation. Using the first letter of each main word they named it laser. The laser had everyone excited. The laser was put through many tests and experiments to see what it could do to help modern civilization. At first there weren't many uses for the laser. Then in the 1970's it became very important. It was finally being used in everyday life. As years went on the uses grew in number. Today lasers were being used in a variety of ways. This includes entertainment, military, communication, business ...




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