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  • Newspaper Round A Beaker With Hot Water
    729 words
    Physics Investigation How does insulation effect the loss of heat In this investigation I am going to try and find out what difference it makes if you wrap newspaper round a beaker with hot water in it and see if the heat loss is different at different thickness layers of newspaper. I carried out a preliminary experiment and found out that by only increasing the layers of thickness by 1 each time, that wont make enough difference to make a good graph because the trends will be too similar. So I ...
  • Water In The Outer Tube
    641 words
    Nuclear Reactors Using a nuclear reactor is an efficient way to produce large amounts of electricity. Nuclear reactors are used to provide power to a neighboring town or city. In a nuclear reactor, water is heated using nuclear energy to the point that it boils and the steam collects around a collection of spinning blades, called a steam turbine. The pressure from the steam turns these blades, which are connected to a dynamo, or generator. The generator is activated and produces electricity, whi...
  • Water System
    562 words
    Scott Bradford 10/12/2000 Adv. Biology The article, "School playing it safe after bacteria found in water", alerts readers to the horrific fact of, the presence of coliform bacteria. Examples of coliform bacteria are members in the genera Escherichia (E. Coli), Klebsiella (K. Pneumoniae), Enterobacter (E. Cloaca i), and Citrobacter (C. Freund ii). These types of bacteria are non sporing, facultative rod-shaped bacteria that ferment lactose with gas formation within 48 hours at 35 degrees C. They...
  • Thermal Equilibrium B Hypothesis
    536 words
    I. Introduction A. Purpose: the purpose of this experiment was to determine if the distance between matter effects the time it takes for the matter to reach thermal equilibrium. B. Hypothesis: If the distance between the matter is decreased then the time it takes for the matter to reach thermal equilibrium will decrease. C. Science concepts: Temperature- measure of the motion of molecules Thermal equilibrium- when two pieces of matter are the same temperature Kinetic energy- energy of motion Hea...
  • Copper With 3 Ml Of Nitric Acid
    682 words
    The Sequence of Chemical Reactions Drew Selfridge Dave Allen, Lab partnerInstructorYang February 11, 1997 INTRODUCTION This experiment was to recover the most amount of copper after its subjected to a sequence of reactions. The copper is originally in solid form, but the reactions will turn it into free Cu+2 ions floating in solution. The ions will then be regrouped to form solid copper once again. During this process, however, some of the Cu+2 ions may be lost. The copper will subjected to chan...
  • Diffuse Through The Dialysis Bag's Membrane
    815 words
    Diffusion LabProblemWill starch, water, glucose, iodine or a combination of the above diffuse across the membrane of the dialysis bag causing the bag to either expand or shrivel? Hypothesis & Strategy I believe that the smaller molecules, such as glucose and water will diffuse through the dialysis bag's membrane causing it to expand, due to the concentration gradient. I would test this hypothesis by filling the bag with a solution consisting of water, glucose and starch, tie it off and weigh it....
  • Use Of Solar Energy
    1,045 words
    RENEWABLE ENERGY SOURCE SOLAR POWER Solar energy is a renewable resource that is environmentally friendly. Unlike fossil fuels solar energy is available just about everywhere on earth. And this source is always free, immune to rising energy prices. Solar energy can be used in many ways to provide heat, lighting, mechanical power and electricity. The two types of solar energy are Passive and Active solar energy. Passive solar heating and cooling represents an important strategy for displacing tra...
  • Career As A Singer Ethel Waters
    1,767 words
    With all that Ethel Waters has contributed to music and film, it is surprising that she is often forgotten. She was a talented blues singer whose unique style distinguished her from other blues singers and she was a jazz vocalist as well. Her talent extended beyond singing, when she became a dramatic actress who earned award nominations for her performances. What was most remarkable about Waters' performances was how she reconstructed the mammy character into one that challenged stereotypes. Car...
  • Hot Rooms
    750 words
    What is the "spa"? The word "spa" is rooted in the Latin language and means "salus per aqua m". For those of you who are not very polished on your Latin, that means "health from water."Spa" is also the name of a small village in Belgium where hot mineral springs were discovered by ancient Romans and used by soldiers to treat aching muscles and wounds from battle. When? It is unclear when the Romans used the first public bath, but during the reign of Caesar Augustus from 27 B.C. to 14 A.D., there...
  • Beaker Of Water
    336 words
    'Planning Osmosis is the net movement of water molecules from a region of their higher concentration through a partially permeable membrane. This movement usually takes place through a membrane which is permeable to water but not to solutes. In my investigation I am going to be investigate the factors affecting the rate of Osmosis. Some factors affecting this are: Length of membrane Temperature of water Concentration of solution The factor I am going to investigate is the length. Equipment Visin...
  • Drink Water
    332 words
    "Water sustains all". Thales of Miletus. Water makes up about sixty percent of the average person's body. Water is a staple of life. It is something everyone needs. In my own opinion, there are four types of water drinkers, the one who refuses to drink water, the one who does not care what they drink, the one who drinks almost nothing else, and the one who follows the food pyramid. First, the one who refuses to drink water, his name is Mr. Dehydration. He only likes to drink, coffee, sodas and g...
  • Their Knees To Holy Water
    491 words
    Keeping in mind the symbolism of water as a source of purification and rebirth, what do we learn of S ivd on the last night of his life In many religions, water serves as a mode of cleansing sins and redeeming yourself in the eyes of God. Children are baptized with water. In India, people will crawl on their knees to holy water just for the chance of dipping themselves in this water to repent all of their sins. In his novel, Crime and Punishment, Dostoevsky uses water as a mode of purification w...
  • Water Quality At Stream Crossings
    582 words
    Forest Roads And Their Effect On Water Quality Roads are often necessary to perform certain tasks in the forests. When roads are made, they often pose the problem of erosion, and damage to nearby water sources. The two articles I read on this topic were both from the August 1999 issue of the Journal of Forestry. Both discuss the different techniques and methods for trying to limit the amount of silt that contaminates roads due to disturbance. The first article, What We Know- and dont know- about...
  • Water Moccasin And Cottonmouth
    566 words
    Water Moccasin The water moccasin, also known as moccasin snake, and cottonmouth (called this because when it is threatened it throws back its head and shows its white-lined mouth as a warning signal), swamp adder, gap per, trap jaw, water moccasin, and low land moccasin. Trap jaw, water moccasin, and cottonmouth are the more common names for it. Belonging to the family Viperidae, it is Agkistrodon piscivorus, phylum Chordata, subphylum Vertebrata, class Reptilian, order Squama ta, family Crotal...
  • Cool Blue Waters Of The Bahamas
    358 words
    Juanita Weems January 8, 2003 English I The Bahamas was a great place to visit. The cool waters make you feel like you are living in an island paradise. When I hear people driving their cars on the rocky roads it notifies me that company is coming. The enraged blue crab tells you that you better get away fast. To begin with, the cool blue waters of the Bahamas are so beautiful. When your feet touch the hot white sand it feels like burning coals. The calm blue waters are very pretty to look at. T...
  • Top Layer Of The Leaf
    310 words
    A leaf needs carbon dioxide, water and sunlight to photosynthesis. The leaf is well adapted for photosynthesis, although leafs do vary depending on the condition they are growing in. Firstly, leaves are usually very large and thin. This gives a larger surface area for trapping as much sunlight as possible. The top layer of the leaf contains the cuticle, which is waterproof to protect the leaf, and the upper epidermis, which is transparent to let in the sunlight. A leaf also contains lots of chlo...
  • Hot Water
    531 words
    Legionnaire's Disease Case study: Legionnaire's Disease and Saunas. Causative organism: Legionella pneumophila Acquired name: First recognized in 1976 when an outbreak of a respiratory disease occurred among many delegates of the American Legion members attending a convention in Philadelphia. 182 people contracted pulmonary disease and 29 died. Characteristics: Small, thin microbe (2-10 micrometers in length). Cell wall-high lipopolysaccharide content. Gram negative aerobic rod (bacillus). Facul...
  • Use Of Solar Power
    2,168 words
    Introduction Sun The heat of the sun is about equivalent to burning a billion trillion tons of coal an hour. Even though only a small fraction of that heat ever reaches the earth it is still more then enough to power the whole world. People seemed to realize the importance of the sun around 30,000 BC. This was when people first started planting crops of wheat. They realized plants did better when planted in the sun over the shade. This caused them to worship the sun as a God. Many cultures built...
  • Life Jacket And The Wakeboard
    253 words
    A Recipe for Wakeboarding The first step to getting up on a wakeboard is to change into your swimming suit. The second step is to go down to the dock and take the boat off of the boat lift. Once the boat is in the water, softly turn the key until the engine fires up. Now that the boat is warm, we are ready to put on our wakeboard. You do that by simply sliding your feet into the rubber bindings that are attached to the wakeboard. After you have the board attached to your feet, you are going to g...
  • Present For A Nail To Rust
    310 words
    An Investigation Of The Factors Affecting Rusting An Investigation Of The Factors Affecting Rusting Of Iron PLAN Background Information Only Iron and steel rust. Other metals corrode. Rusting is an oxidation process. Rust is a flaky red-brown solid which is largely hydrated iron. Prediction I think that the nail in the test tube with air and water in it will be the only one to rust. The other nails will not rust that much. Apparatus 4 test tubes, 4 nails, cooking oil, water, silica gel, boiled w...

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