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.
4,609 Essays on Science. Documents 1,141 - 1,170
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Deforestation of Canada's Boreal Shield & Pacific Coast
Deforestation of Canada’s Boreal Shield & Pacific Coast First off, what is deforestation? The majority of people have come to know this term; deforestation is the clear cutting or total removal of trees in a forest. With the destruction of these luscious and plentiful forests come many environmental issues ranging from global warming to soil erosion to loss of habitat. By the end of this report you should have a better understanding of the impact
Rating:Essay Length: 613 Words / 3 PagesSubmitted: December 1, 2009 -
Deforestation of the Amazon Tropical Rainforest
Running head: DEFORESTATION OF THE AMAZON TROPICAL RAINFOREST Deforestation Of The Amazon Tropical Rainforest Kimani Allen & Fredcisa Allen Devry University Deforestation Of The Amazon Tropical Rainforest First and foremost what is deforestation? Deforestation occurs when areas that were once forested is converted and used for other purposes. Other purposes include the use of the cleared land for agriculture, pasture for livestock, farming, and housing. The trees or consequent charcoal are used as, or sold,
Rating:Essay Length: 3,081 Words / 13 PagesSubmitted: May 2, 2011 -
Deforestation: A Global Consequence
Deforestation: A Global Consequence Deforestation has been a major problem that has been effecting the world for an extended period of time. Deforestation is the when forests are burned, cleared, or cut down for purposes of the people that are living around the land. Deforestation mostly happens in lesser developed countries so that they can get money to help improve their status of living. Since 1950, a fifth of the world’s forest cover has
Rating:Essay Length: 1,767 Words / 8 PagesSubmitted: December 21, 2009 -
Dehydration
Water is a vital and important component of life. The lack of water can bring down an entire empire, and many have been victims of droughts. The world is covered 70% by water, but only 2.5% of that water is suitable for consumption (Ward, 2003). Amazing as the Earth is, the human body is also a marvelous system created by nature with cells that need water to survive. The human body needs water in order
Rating:Essay Length: 1,380 Words / 6 PagesSubmitted: November 28, 2009 -
Dehydration Effect on Human Tissue
The human body consists of massive amounts of different tissues and oranges, all doing different things. It’s inevitable that these tissues need a large amount of energy to maintain health and to stay productive. When the body encounters a famine, it reacts to the lack of food by many different starvation endorse tactics. When the body enters into a lack of water, there is very little it can do but stop the production of urine
Rating:Essay Length: 422 Words / 2 PagesSubmitted: February 17, 2010 -
Demand for Veal Versus Veal Calves Welfare
Demand for Veal versus Veal Calves Welfare 952795 Meat demand is rapidly rising around the world; this can be contributed to the economic growth in third world countries. As the third world countries standard of living and buying power increases, so does the demand for the expensive protein, meat. As meat becomes less and less a sign of status and power, the worldwide demand for meat will increase, and this will lead to a need
Rating:Essay Length: 2,464 Words / 10 PagesSubmitted: December 22, 2009 -
Density of Sprite
Hamza Aziz General Chemistry I Lab 09/12/2007 Lab 7 Density of Sprite and Diet Sprite Abstract: The density of regular Sprite was found to be 1.037 +/- g/mL. compared to Diet Sprite which was 0.9965 +/- g/mL. Among the three volumetric glassware Pipette was most precise (у=0.0016 g/mL). Burette was the second best (у=0.0023 g/mL) and graduated cylinder was the least precise (у= 0.007 g/mL). Density was found to be intensive property. The slope of
Rating:Essay Length: 1,555 Words / 7 PagesSubmitted: February 27, 2010 -
Dental Implants
There are a number of different kinds of dental implants that are currently being used to support prosthetic teeth. One of the emerging forms gaining popularity with both dentists and patients is the root form implant, which utilizes a titanium or metal alloy cylinder that is surgically implanted into the jawbone, and used to secure replacement teeth (Zhang 2). There are a number of evaluative processes as well as steps to the procedure that
Rating:Essay Length: 1,285 Words / 6 PagesSubmitted: January 27, 2010 -
Depleted Uranium - Hazardous Chemical
Depleted Uranium- Hazardous Chemical Depleted uranium is a byproduct of the industrial processes that produce enriched uranium, which is used in nuclear reactors and nuclear weapons. Natural uranium consists of three isotopes or forms of the uranium atom: uranium 234 (U-234), uranium 235 (U-235), and uranium 238 (U-238). More than ninety-nine percent by mass of natural uranium consists of U-238, and only 0.7 percent is U-235. However, U-235 is the isotope that is fissile, which means that atoms
Rating:Essay Length: 843 Words / 4 PagesSubmitted: June 6, 2010 -
Depletion of the Ozone Layer
The ozone layer diminishes more each year. As the area of polar ozone depletion (commonly called the ozone hole) gets larger, additional ultraviolet rays are allowed to pass through. These rays cause cancer, cataracts, and lowered immunity to diseases.1 What causes the depletion of the ozone layer? In 1970, Crutzen first showed that nitrogen oxides produced by decaying nitrous oxide from soil-borne microbes react catalytically with ozone hastening its depletion. His findings started research
Rating:Essay Length: 1,157 Words / 5 PagesSubmitted: January 3, 2010 -
Depression in the Elderly
Depression in the Elderly Depression later in life frequently coexists with other medical illnesses and disabilities. In addition, advancing age is often accompanied by loss of key social support systems due to the death of a spouse or siblings, retirement, and/or relocation of residence. Because of their change in circumstances and the fact that they're expected to slow down, doctors and family may miss the diagnosis of depression in elderly people, delaying effective treatment. As
Rating:Essay Length: 1,224 Words / 5 PagesSubmitted: March 10, 2010 -
Descartes and Newton
Descartes and Newton The old saying "great minds think alike" is not just an old saying. It was at least partially true concerning the minds of Rene Descartes and Isaac Newton. The significant scientific contributions of each man share some common concepts and methodologies, but they generally explored different topics of research. Each scientist based his beliefs on different mind sets. The similarities between Newton and Descartes are found deep in the foundations of their
Rating:Essay Length: 363 Words / 2 PagesSubmitted: January 8, 2010 -
Descartes and Newton
Descartes and Newton The old saying "great minds think alike" is not just an old saying. It was at least partially true concerning the minds of Rene Descartes and Isaac Newton. The significant scientific contributions of each man share some common concepts and methodologies, but they generally explored different topics of research. Each scientist based his beliefs on different mind sets. The similarities between Newton and Descartes are found deep in the foundations of their
Rating:Essay Length: 363 Words / 2 PagesSubmitted: March 26, 2010 -
Describe 3 Ways in Which a Dramatic Approach Can Be Used to Give Students a Deeper Understanding of a Social Studies Topic
f g g gg g g g g g gg g g g g g g gg g g g Describe 3 ways in which a dramatic approach can be used to give students a deeper understanding of a social studies topic. In teaching a social Studies topic on ‘workers in my community', the still pictures approach can be useful, in order for children to gain a deeper understanding. In using this approach skills in
Rating:Essay Length: 777 Words / 4 PagesSubmitted: April 21, 2011 -
Describe Stroke Cycle for Breaststroke Identifying Phases of Propulsion and Resistance.Define and Analyse the Major Muscle Groups Used and the Energy System Demands Made on the Body in Swimming This Stroke over 200 Metres in 2 Minutes 10seconds.Explain
Name: Student Number: Unit: Sports Analysis. Unit Leader: Sally Hope. Date: 31st January 2006. Assignment: Ў®Describe stroke cycle for Breaststroke identifying phases of propulsion and resistance. Define and analyse the major muscle groups used and the energy system demands made on the body in swimming this stroke over 200 metres in 2 minutes 10seconds. Explain how you would develop both muscles and energy systems using appropriate land and water trainingЎЇ. I declare that this is
Rating:Essay Length: 2,486 Words / 10 PagesSubmitted: April 10, 2010 -
Description of Tiger Sharks
Description of Tiger Sharks Information about Tiger sharks is rare in books so most of this paper will be about sharks in general. The Tiger Shark's Latin name is Galeocerdo cuvier. Sharks are a member of the fish family. There are over 350 species of sharks. Sharks can be as big as 49 feet long (whale shark) and as short as 6 inches (cigar shark). Sharks' bodies do not have bones, but have cartilage instead.
Rating:Essay Length: 636 Words / 3 PagesSubmitted: December 15, 2009 -
Descriptive Epidemiology, Measures of Disease Frequency
Principles of Epidemiology Homework Assignment #1 *Descriptive epidemiology, Measures of disease frequency* NOTE: Assignment is due (hard-copy and typed) at the start of the discussion group. 1. Create a summary table of formulas that will be helpful for you from this week’s lectures. CI= Number of new cases of disease during a specified time period Number in at-risk population at beginning of time period AR= Number of new cases of disease Total population at risk
Rating:Essay Length: 1,901 Words / 8 PagesSubmitted: February 15, 2017 -
Descriptive Profiling
Descriptive Profiling Summary: Descriptive words are very important when it comes to sensory analysis as they can give an idea of how a product tastes and/or feels, for example if a product is described as being creamy the texture and taste should have the mouth feel and flavour associated with cream. The objective of this exercise was to construct a comparative test questionnaire consisting of a number of questions the group thought were relevant to
Rating:Essay Length: 451 Words / 2 PagesSubmitted: February 20, 2010 -
Deserts
Hot and Dry Deserts vegetation is very rare. Plants are almost all ground-hugging shrubs and short woody trees. All of the leaves are replete (packed with nutrients). Some examples of these kinds of plant are Turpentine Bush, Prickly Pears, and Brittle Bush. For all of these plants to survive they have to have adaptations. Some of the adaptations in this case are the ability to store water for long periods of time and the ability
Rating:Essay Length: 440 Words / 2 PagesSubmitted: November 26, 2009 -
Deserts, Glaciers and Climate
Glaciers and other polar features have started becoming more and more relevant in modern society due to Global Warming. Global Warming is described as an intense change in the globes climate. At first, most scientist were skeptical about the effects of Global Warming, mostly because of the heavy personal and political impacts that would result in accepting the problematic and troublesome truth, but as time goes on, scientists and normal people alike are beginning to
Rating:Essay Length: 1,037 Words / 5 PagesSubmitted: August 15, 2010 -
Design of an Fm Receivers
Abstract This paper will discuss the design of an FM receiver. It will begin with a brief historical backdrop of FM broadcasting and its use in society. It will continue by providing the necessary mathematical background of the modulation process. Furthermore, it will enumerate some of the advantages of FM over other forms of modulation, namely AM. Finally, the paper will discuss the design of a basic FM receiver as well as introduce some circuits
Rating:Essay Length: 1,599 Words / 7 PagesSubmitted: December 5, 2009 -
Design of Filter Circuits for Impedance Matching of Wideband Transducers
Design of filter circuits for impedance matching of wideband transducers ABSTRACT Wide band piezo-composite transducer is a next generation transducer for under water application. The impedance matching on the interface between electro-acoustical transducer and electrical transmitter has been the most important subject to confirm the high transmitting efficiency. Because the impedance of a wide band transducer depends on signal frequency, it is difficult to design a matching network between power amplifier and the transducer for
Rating:Essay Length: 584 Words / 3 PagesSubmitted: January 24, 2010 -
Design, Fabrication and Performance Analysis of Solar Oven
I. INTRODUCTION Today, every country draws its energy needs from a variety of sources. We broadly classified this source as conventional and non conventional. 1.1] CONVENTIONAL SOURCES 1) Fossil fuels, 2) Hydroelectric power, 3) Nuclear fission, 1.2] NON-CONVENTIONAL SOURCES 1) Solar energy, 2) Wind energy, 3) Bio mass and bio gas, 4) Ocean thermal energy, 5) Tidal energy, 6) Geothermal energy. Energy is the prime mover of economic growth and is vital to the survival
Rating:Essay Length: 2,240 Words / 9 PagesSubmitted: December 10, 2009 -
Designer Babies?
Designer Babies Parents can now pick a kid’s sex and screen for genetic illness. Will they someday select brains and beauty too? In the ever- advancing technological world, scientists discover new and efficient ways to advance society each and every single day. Imagine being able to choose your child’s body type, or personality, or IQ. It is not as farfetched as it sounds. It’s a process called “Gene Therapy”, and is being perfected right now.
Rating:Essay Length: 835 Words / 4 PagesSubmitted: December 22, 2009 -
Destroying a Life
Everyone can witness a miracle at least once in his or her life. It is a miracle which a man and woman can create. Unfortunately, many decide on a drastic choice to kill someone they should bring into the world. Abortion is a decision made constantly among pregnant adults and teens. A few reasons why abortions are so popular are the pre-marital sex leading to pregnancy, couples that don’t want the baby, irresponsible people. What
Rating:Essay Length: 578 Words / 3 PagesSubmitted: December 26, 2009 -
Destruction of Rain Forest
“In every sense, a standing rain forest supplies more economic wealth than if it were cleared … yet deforestation continues at an alarming rate.” (Tropical Rain Forest Coalition, 1996). Rain Forests have played a significant role in shaping modern biology. The destruction of the rain forests will determine the fate of all species humans plants and animals. Many people do not understand the long- term consequences of losing the earth’s rain forests. They have provided
Rating:Essay Length: 1,271 Words / 6 PagesSubmitted: January 28, 2010 -
Detailed Differences Between Eukaryotic and Prokaryotic Cells
DETAILED DIFFERENCES BETWEEN EUKARYOTIC AND PROKARYOTIC CELLS Cells are divided into two categories namely the Prokaryotes and Eukaryotes. These two have varying differences between them. Speaking in simple cell biology words, prokaryotes are primitive, simple organisms that lack membranous cell organelles. The opposite of this are eukaryotes, which are advanced and complex organisms having membrane bound cell organelles. Seemingly simple in structure and markedly different from eukaryote and protist organisms, prokaryotic cells are believed to
Rating:Essay Length: 807 Words / 4 PagesSubmitted: April 10, 2014 -
Determination of Chlorides
ISE: The Determination of Chloride Unknown: #34 I. Purpose: In experiment V, “ISE: The Determination of Chloride”, the concentration of an Unknown Chloride solution, and the Wt% of NaCl in a sample of celery salt, were both determined. To determine the concentration of an Unknown Chloride solution, a Calibration plot is first prepared. The Calibration plot is made by first measuring a series of known concentrations of Cl- (with the same activity of the unknown
Rating:Essay Length: 919 Words / 4 PagesSubmitted: January 2, 2010 -
Determination of Equilibrium Constant, Ka, and Pka by Using Spectrophotometry
Determination of Equilibrium Constant, Ka, and pKa by Using Spectrophotometry [1]∗* Jasmin Villarreal, Hannnah Phipps, Bethany Malinak Chemistry 112, Section 534 Introduction Solutions of bromothymol blue will be measure in highly acidic, highly basic, and neutral aqueous solutions in order to derive the absorbance at different wavelengths by using a spectrophotometer. The information derived from the spectrophotometer will also reveal the lambda max that will then be used to evaluate the equilibrium constant of the
Rating:Essay Length: 1,121 Words / 5 PagesSubmitted: June 20, 2016 -
Determination of Reaction Order with Respect to Crystal Violet Dye
Purpose: To determine the reaction order with respect to crystal violet dye. Procedure: Turn on a Spectronic 20 and warm it up for at least 15 minutes. Be sure the wavelength is set to 540nm. When the instrument has warmed up, use a clean small test tube from the drawer filled 2/3 with the first NaOH solution that is planned to use, as a blank set 0% and 100% transmittance. Take a %T reading every
Rating:Essay Length: 334 Words / 2 PagesSubmitted: November 15, 2009