Science
The scientific world contains a wealth of knowledge that enables mankind to live the way it does. EssaysForStudent.com can help you close the gaps in your knowledge.
4,610 Essays on Science. Documents 3,331 - 3,360
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Report, the Yellow Fever
-Disease, mutation, disfunction, or virus?: virus and disease -Common name: yellow fever -Scientific name: flavivirus and topotypes -History of oResearched „XWhere: Philadelphia, Cuba, and South Africa „XWhen: 1800, 1881, 1901, and 1939 „XWhy: It was researched because so many people were infected who were coming to America, and so many people were getting infected by the virus who lived near the port. „XHow: It was researched with the Aedes Aegypti mosquito and studied the
Rating:Essay Length: 1,223 Words / 5 PagesSubmitted: December 27, 2009 -
Reproductive Cloning
Reproductive cloning is a technology used to generate an animal that has the same nuclear DNA as another currently or previously existing animal. Dolly was created by reproductive cloning technology. In a process called "somatic cell nuclear transfer" (SCNT), scientists transfer genetic material from the nucleus of a donor adult cell to an egg whose nucleus, and thus its genetic material, has been removed. The reconstructed egg containing the DNA from a donor cell must
Rating:Essay Length: 300 Words / 2 PagesSubmitted: March 8, 2010 -
Research About Dogs
Today i want to tell you about my favourite breed of dog. Its called the ‘Bavarian Mountain Hound’. I will tell you about the history of the breed and its charachteristics. So let’s start with the history. Back in the days the dog was used during the quarries. Quarry is the act of hunting animals for sport or food. As you have probably noticed in the name of the breed there is a term ‘Bavarian’
Rating:Essay Length: 366 Words / 2 PagesSubmitted: April 17, 2016 -
Research and Multiple Sclerosis
Sims CC100-DD 12/8/2005 Research and Multiple Sclerosis “Imagine having a disease that can strike at any time, that can leave you blind or paralyzed for days, months, or forever. Then imagine that this disease might spontaneously go into remission, only to return months or years later. This is life with multiple sclerosis. Unfortunately, this is not an unusual scenario” (Riskind). This is how Peter Riskind describes multiple sclerosis. Peter is a M.D. and PH.D., at
Rating:Essay Length: 3,031 Words / 13 PagesSubmitted: May 16, 2010 -
Research Contains Adult Stem Cells, No Embryos Allowed
Jonathan Bruno Ms. Greggs Eng 101-021 4/10/08 Research Contains Adult Stem Cells, No Embryos Allowed Stem cell research has been argued about for quite some time now. People are against it because it is the destruction of a human embryo to benefit other people. Stem cells may be embryonic or adult, somatic. It has been said that stem cells can replace cell tissue that have been damaged or destroyed by some type of sickness or
Rating:Essay Length: 1,221 Words / 5 PagesSubmitted: November 8, 2009 -
Research Paper for General Biology Topic - the Reason to Have a Research Paper Format
ITLE: RESEARCH PAPER FOR GENERAL BIOLOGY TOPIC THE REASON TO HAVE A RESEARCH PAPER FORMAT The reason to have a research paper format is for the student not to think that the research is for intimidation but to be aware of the following rules. • Students should be aware of the main rules of writing a research paper. If you know the standards of the research paper format required, you know what is expected from
Rating:Essay Length: 2,037 Words / 9 PagesSubmitted: April 26, 2010 -
Research Paper on Coral Reefs and Their Habitat
Research Paper on Coral Reefs and their Habitat Uploaded by Buster57 on Dec 21, 2004 -------------------------------------------------------------------------------- Coral Reefs Coral reefs are complex and diverse habitat. They are perhaps on of the most interesting and colorful ecosystems to be found in the marine environment. They are very unique in many ways. Coral reefs play many important poles in the marine world. They must have certain conditions to be formed, and to survive. Lots of different sea
Rating:Essay Length: 1,095 Words / 5 PagesSubmitted: March 19, 2010 -
Reservoir Geology and Stratigraphy
Abstract Deep-water deposits containing variety characteristics of reservoir potential followed by the texture, facies, and geometry. The variety of composition influenced by the materials from the volcanic arc in the center of Java Island that causing the forming of volcanogenic turbidite deposits. Miocene-Pliocene deep water sediment can be found in several formations: Halang Formation and Kerek Formation in Central Java, and also Kebo-Butak Formation and Semilir Formation in East Java as the research area. The
Rating:Essay Length: 2,559 Words / 11 PagesSubmitted: February 10, 2018 -
Residuos
Estimados Alumnos y Alumnas Queremos darle la bienvenida en este proceso de aprendizaje, que esperamos sea de su total satisfacción. A continuación le entregamos una guía para que Ud. pueda obtener un buen resultado. El participante estudia en su domicilio particular, en su trabajo o en el lugar que considere más apropiado. A través del estudio de las unidades didácticas organizadas, tales como ejercicios de autoevaluación y aplicación, diseñados metodológicamente de una manera sencilla y
Rating:Essay Length: 541 Words / 3 PagesSubmitted: May 11, 2011 -
Resistance Basic Guide
A basic guide to resistance. Electron Flow Model Everything is made of very small particles called atoms. Each atom has a heavy positively charged nucleus and is surrounded by a cloud of light, negatively charged, electrons. In metals, the outer most electron of each atom is weakly attracted to the positive nucleus and can escape from the atom and wander around between the atoms. [Note 1] So, in metals, we have all these millions and
Rating:Essay Length: 1,374 Words / 6 PagesSubmitted: February 13, 2010 -
Resistance Coursework
Resistance coursework Aim: My aim is to find out which factors affect the resistance of wire and how they affect them. Ohm’s Law: Ohm’s law is also relevant to know of Ohm’s Law, which states that the current through a metallic conductor (e.g. wire) at a constant temperature is proportional to the potential difference (voltage). Therefore V ё I is constant. This means that the resistance of a metallic conductor is constant providing that
Rating:Essay Length: 929 Words / 4 PagesSubmitted: April 9, 2010 -
Resistance Coursework - Some Useful Things
Resistance Coursework Planning: Aim Investigate how the length of a wire affects the current and resistance of a wire. Variables The variables that could change resistance are: • Length of the wire • Cross section area (thickness) • Changing materials • Changing temperatures The variable I am going to change in my experiment is the length of the wire. Prediction and Hypothesis I think as you increase the length of the Constantan wire, you also
Rating:Essay Length: 352 Words / 2 PagesSubmitted: April 13, 2010 -
Resistance of a Piece of Wire
Planning In this piece of coursework, I am going to investigate what affects the resistance of a piece of wire. Wire is made up of atoms. Electric current is a flow of electrons, and it is these electrons that collide with the nucleus of the atoms. Every time this happens, it causes resistance. The build up of friction is what produces the heat. There are many variables that could affect the resistance of the piece
Rating:Essay Length: 1,963 Words / 8 PagesSubmitted: January 24, 2010 -
Resistance of a Wire
Theory What is resistance? Electricity is conducted through a conductor, in this case wire, by means of free electrons. The number of free electrons depends on the material and more free electrons means a better conductor, i.e. it has less resistance. For example, gold has more free electrons than iron and, as a result, it is a better conductor. The free electrons are given energy and as a result move and collide with neighbouring free
Rating:Essay Length: 1,466 Words / 6 PagesSubmitted: November 13, 2009 -
Resistance of a Wire
Introduction The resistance of a wire depends on certain factors. Some of these variables are listed below: • Length of wire • Diameter or thickness of wire • Temperature at which wire is kept • The material of which wire is made out of. • The potential difference or voltage. • Humidity • Cross sectional area. • Voltage across circuit All these factors will have to be kept constant except the diameter of the wire
Rating:Essay Length: 4,024 Words / 17 PagesSubmitted: December 6, 2009 -
Resistance of a Wire
The resistance of a wire Planning:- Introduction: To investigate the resistance of a wire at different lengths to see whether or not a longer wire has a larger resistance than a shorter wire. Apparatus: Wire Voltmeter Ammeter Battery 2 crocodile clips Metre rule Variable resistor Diagram: Variables: Length Thickness Resistance Material The material and diameter of the wire needs to be kept constant to keep the test fair as we are investigating resistance. The independent
Rating:Essay Length: 1,015 Words / 5 PagesSubmitted: December 15, 2009 -
Resistance of a Wire
In this practical assessment we are going investigate how the length of wire affects the resistance of the wire. First of all we need to get some general knowledge about the terms involved in this investigation. The main term is Power which is the amount of work done or energy transferred per unit of time. Electrical power generation is the process of converting any form of energy to electrical energy in any way possible for
Rating:Essay Length: 301 Words / 2 PagesSubmitted: January 31, 2010 -
Resistance of a Wire
Coursework on Resistance Aim To investigate the variables that affect resistance in an electric circuit. Investigation Research Ohm, Georg Simon (1787-1854), German physicist, best known for his research on electrical currents. He was born in Erlangen and educated at the University of Erlangen. From 1833 to 1849 he was director of the polytechnic Institute of Nurnberg, and from 1852 until his death he was professor of experimental physics at the University of Munich. His formulation
Rating:Essay Length: 1,524 Words / 7 PagesSubmitted: February 14, 2010 -
Resistance of a Wire
Task To investigate how the resistance of a wire is affected by the length of the wire. Theory What is resistance? Resistance is a force which opposes the flow of an electric current around a circuit so that energy is required to push the charged particles around the circuit. The circuit itself can resist the flow of particles if the wires are either very thin or very long. e.g. The filament across an electric light
Rating:Essay Length: 251 Words / 2 PagesSubmitted: March 7, 2010 -
Resistance of a Wire Investigation
Preliminary Investigation: Aim: To investigate the main problems with my main experiment and to see how to resolve these. Preliminary Method: 1. Setup Equipment 2. Make Circuit with the set length of wire 3. Draw Results table 4. Record Results 5. Change the lengths of wire and do same steps 2 more times. Preliminary Equipment: • Metre Ruler • Metre length Of wire • Voltmeter • Ammeter • Power Unit • Sellotape • Paper, Pencil
Rating:Essay Length: 311 Words / 2 PagesSubmitted: November 12, 2009 -
Resistance of Wire
Introduction The purpose of this investigation is to expose the factors responsible for affecting the resistance of a wire in an electrical circuit. Many factors will have to be investigated prior to experimentation. A prior knowledge of electrical circuits and the factors of resistance will be required. The conclusive objective will be that research on the subject matter is proven by experimentation. Resistance The standard opinion of resistance when electricity is concerned is the ability
Rating:Essay Length: 2,628 Words / 11 PagesSubmitted: December 24, 2009 -
Resistnace
What is resistance? Is anything in a circuit that slows the flow down of electrons (the current) Planning Introduction Resistance is anything in the circuit that slows down the current (The flow of electrons.) If you increase the resistance then less current will flow. A variable resistor alters the current flowing through the circuit depending on what you alter it to. - ve +ve Voltage supply provides the push Current Flows Resistance opposes the flow
Rating:Essay Length: 435 Words / 2 PagesSubmitted: November 21, 2009 -
Resitence of Wire
Aim I am going to be studying the resistance of wire. The purpose of this investigation is to see how the length of wire affect the dependent variable, resistance. Prediction I predict that, as the length of the wire doubles, the resistance will also double, This means that the length will affect the resistance. Hypothesis Resistance is caused by electrons bumping into ions. If the length of the wire is doubled, the electrons bump into
Rating:Essay Length: 292 Words / 2 PagesSubmitted: April 21, 2010 -
Resource Gluttony
I recently watched “An Inconvenient Truth”. If you have not seen it yet, open up your heart and mind, and watch it for the sake of your children and grandchildren. We are altering Earth in ways like never before. It is as if we are conducting a vast uncontrolled planetary experiment. How fast can we increase the concentration of C02 in the atmosphere? What will be the consequences? Our last 150 years has been impressive
Rating:Essay Length: 505 Words / 3 PagesSubmitted: January 14, 2010 -
Resource Shortage Paper
Let’s take a moment to think about things other than the latest electronics that have hit market, the latest fashions to hit the runway or the latest cars to hit the dealerships. Let’s think about the water that we drink. What would we do without this necessary resource? One of the problems that the United States is facing right now is the shortage of water. Many parts of the western United States such as the
Rating:Essay Length: 514 Words / 3 PagesSubmitted: December 12, 2009 -
Respiration and Glycolysis
Respiration can be defined as the oxidation of the end products of glycolysis with the storage of the energy in the form of ATP. Cellular respiration occurs when oxygen is available, and the products are carbon dioxide and water. There are three main pathways in the cellular respiration process. These are: pyruvate oxidation, the citric acid cycle, and the respiratory chain. Pyruvate oxidation in eukaryotic cells occurs inside the mitochondrion in the inner membrane,
Rating:Essay Length: 1,192 Words / 5 PagesSubmitted: February 23, 2010 -
Respiratory Study Guide
Respiratory System The major function of the respiratory system is to supply the body w/ oxygen and dispose of carbon dioxide. Four processes called respiration: 1.) Pulmonary ventilation: movement of air into and out of the lungs so that the gases there are continuously changed and refreshed (commonly called breathing) 2.) External respiration: movement of oxygen from the lungs to the blood and of carbon dioxide from the blood to the lungs. 3.) Transport of
Rating:Essay Length: 1,839 Words / 8 PagesSubmitted: December 6, 2009 -
Respiratory Syncytial Virus
Running head: (RSV) Respiratory Syncytial Virus (RSV) By Natalie Jache December 03, 2006 Respiratory Syncytial Virus (RSV) Introduction Respiratory Syncytial Virus (RSV) is a very common respiratory virus that displays mild cold like symptoms in adults and older children. In children under two, particularly those born prematurely, are immunocompromised, as well as those with heart and lung disease, RSV can be a potentially life threatening disease. RSV commonly occurs in epidemics in the winter and
Rating:Essay Length: 1,441 Words / 6 PagesSubmitted: January 8, 2010 -
Respiratory System
INTRODUCTION Through experimental analysis of the physiological aspects of the human respiratory system, one can truly gain a better understanding of its inner-workings. A deeper look into the anatomy and the physiological mechanisms of the human lungs requires using the knowledge gained from research, lab and coursework of the respiratory system. The respiratory system begins with respiratory airways that lead into the lungs. These airways include nasal passages, pharynx, trachea, larynx, right and left bronchi,
Rating:Essay Length: 2,515 Words / 11 PagesSubmitted: November 24, 2009 -
Restriction Endonucleases
Introduction A bacteriophage is a virus that infects bacteria. A type of bacteriophage is bacteriophage lambda. This specific bacteriophage infects E. Coli. It is composed of protein and double stranded DNA ЎVdsDNA). The DNA of the phage contains around 50,000 base pairs and codes for 50 proteins. At both ends of the DNA of the phage, there are cohesive ends, which are composed of 12 nucleotides. Both ends compliment each other, which makes the DNA
Rating:Essay Length: 532 Words / 3 PagesSubmitted: April 18, 2010