Science Essays

Free essays on science and technology

  • Sleepy people – the dangers of sleep deprivation
    Do this test tonight when you go to bed. Put a plate on the floor next to your bed. Lie down with one hand hanging over the bed holding a spoon above the plate. When you fall asleep, the spoon will fall on the plate and should wake you up. If you don’t wake up until the next day, it probably means you are ‘sleep deprived’. We live in a world of tired, sleep deprived people. This is the theory of behavioural biologist, Paul Martin. In his book Counting Sheep, he describes a society which is just
    752 words (3 pages) in essay
  • Multiple-Choice and Bimodal
    1) The process of solute particles being surrounded by solvent particles is known as _. A) salutation B) agglomeration C) solvation D) agglutination E) dehydration Answer: C 2) Pairs of liquids that will mix in all proportions are called _ liquids. A) miscible B) unsaturated C) polar liquids D) saturated E) supersaturated Answer: A 3) The solubility of oxygen gas in water at 25 °C and 1.0 atm pressure of oxygen is 0.041 g/L The solubility of oxygen in water at 3.0 atm and 25 °C is _ g/L. A) 0.0
    5251 words (33 pages) in essay
  • GLOBAL WARMING
    Running head: The Inconvenient Truth 1 Global Warming: The Inconvenient Truth Jonathon McNeil Middle Tennessee State University October 27, 2015 The Inconvenient Truth 2 Abstract The correlation between temperature and year was not significant. For many years I have been skeptic of global warming because the climate record av available to assess he effects of increased carbon dioxide emission has been too short to say with confidence that the effect is real. There is no question that the concent
    913 words (9 pages) in essay
  • Microscope and the Cell
    BioLab3 Lab Report 3 Microscope and the Cell Student Name: I. Purpose of the Microscope Define the following terms. Magnification the action or process of magnifying something or being magnified, especially visually. Resolving Power The ability of a microscope or telescope to distinguish two close together images as being separate. Contrast The ability to see specimen detail against its background. II. The Compound Microscope EXERCISE 1 – Label the parts of the compound microscope 1. Eyepiece 2.
    1345 words (21 pages) in essay
  • Presentation on Genes and DNA Race
    Special Event 2 Presentation on Genes and DNA Race Directions: 1. Print off the questions below for Cracking the Code of Life 2. Click on the URL for NOVA listed below (or cut and paste into the address line) http://www.pbs.org/wgbh/nova/genome/program_adv.html 3. Scroll down to Watch Video Online 4. Choose program 1: Instructions for a Human Being 5. Select the speed in Quick time that you wish to watch it. If the full screen version does not play smoothly, you may have an older model of compu
    1042 words (6 pages) in essay
  • Genectics Concepts Lab 11
    BioLab3 Lab Report 11 Genetics Concepts Lab Report Student Name: I. Meiosis and Inheritance EXERCISE 1 – Gamete Formation in Monohybrid Crosses For each of the following diploid genotypes, show the possible haploid genotypes. Parental Genotype (diploid): AA aa Aa meiosis Haploid Genotype: AA aa Aa During fertilization, two gamete nuclei fuse and the diploid condition is restored. List the diploid genotypes produced by fusion of the following gametes: Gametes: a a A A A a fertilization Offspring
    1348 words (32 pages) in essay
  • Human Genectics Lab 12
    BioLab3 Human Genetics Lab Report Answer Key Student Name: Kendall Austin I. Inheritance of Human Genetic Characteristics A. Genetic Variation Define the following terms: Pedigrees A chart used to show the genetic connections between generations Polygenic A trait may show dominant-recessive inheritance or incomplete dominance Sex chromosomes Designated with an X or Y contain the genes that deal with gender Autosomes Code for other traits besides gender Carriers Individuals with one defective co
    1372 words (16 pages) in essay
  • Enzymes Lab Report 5
    BioLab3 Lab Report 5 Enzymes Student Name: I. Enzyme Structure and Function EXERCISE 1 – Preparation of an enzyme activity standard At five minute intervals over the next fifteen minute period, record the color intensity of the solution of each test tube. Time (min) Tube S1 Potato Extract + Catechol Tube S2 Potato Extract + Water Tube S3 Catechol + Water 0 Yellowish Clear to milky Clear to milky 5 Yellowish Clear to milky Clear to milky 10 Orange Clear to milky Clear to milky 15 Brownish Red Cle
    800 words (9 pages) in essay
  • Dolphins in the wildlife and SeaWorld
    Outline: 1. Dolphins are intelligent marine mammals. i. Dolphins give themselves name http://www.omgfacts.com/lists/332/11-Facts-That-Will-Change-The-Way-You-See-Dolphins-ab735-4 (1) Have many special skills that other animals don’t have a. Curious. b. Help people do fishing. c. Can interact with human. http://www.dolphins-world.com/ (2) People bring them to SeaWorld. a. Perform a show b. Cute smile face c. Popular, kids like them http://seaworld.com/ 2. The differences and similarities of dolp
    321 words (3 pages) in essay
  • Elephants
    One of the biggest mammals is elephant. There are two main kinds of elephants: Asian elephant and African elephant. African elephants are larger than the other kind. One way to differentiate them is that African elephants have bigger ears than Asian one. African elephant, as their name implied, they live in Africa. There are many jungles and rainforests which elephants like to live. They are usually 2.5 to 4 meters high. They look like a huge wall standing in front of you. Actually they are as
    281 words (2 pages) in essay
  • Dolphins in the wildlife and SeaWorld
    Dolphins are intelligent marine animals but live in water. There are 43 different types of dolphin. These animals have really special skills. These clever animals are curious, sometimes rescue human and help people in various circumstances, such as, they do fishing for people. Because of their cute smile face and their intelligent, people bring them to SeaWorld and train them. After training, they perform shows with their trainers. They are so popular, most kids like them. Dolphins are really s
    652 words (4 pages) in essay
  • Superbug: The Fatal Menace of MRSA
    MRSA should not be taken lightly. Everything Jay had to endure due to MRSA is definitely an eye-opener. No one should suffer one of the hospital visits that Jay experienced, much less years of them. You think you are going to the hospital to get better only to realize that you can potentially become more ill. My grandmother always says, “Why would I go to the hospital for a cold and risk getting something worse?” Now I can understand why she thinks that way. I have come to learn that viruses se
    451 words (2 pages) in essay
  • Using Nutrition to Fight Cancer
    The correlation between sugar and cancer is quite disturbing to be honest. Human consumption of sugar was approximately 11 lbs. a year in 1830 and rose to a shocking 150 lbs. a year by the end of the twentieth century. This inevitably had an effect on the amount of cancer cases in the United States and around the world. Nobel Prize winner, Otto Heinrich Warburg, a German biologist, discovered that the metabolism of malignant tumors is dependent on glucose consumption. Sugar and flour have a hig
    668 words (4 pages) in essay
  • TEST BETWEEN TREATMENT AND BLOCKS
    OBJECTIVE 1 TEST BETWEEN TREATMENT AND BLOCKS Dependent Variable:observation Source Type III Sum of Squares df Mean Square F Sig. Corrected Model 239892.700a 9 26654.744 2.887 .023 Intercept 424116.300 1 424116.300 45.930 .000 blocks 137360.867 4 34340.217 3.719 .020 treatment 84800.833 1 84800.833 9.184 .007 blocks * treatment 17731.000 4 4432.750 .480 .750 Error 184678.000 20 9233.900 Total 848687.000 30 Corrected Total 424570.700 29 a. R Squared = .565 (Adjusted R Squared = .369) We find ther
    714 words (11 pages) in essay
  • Chemistry Lab
    Chemistry May 13, 2015 4A Purpose: The purpose of this lab was to find the concentration of the acid. Adding small amounts of the base helped to do this. You could determine the pH every time and watch it rise until it hit 7. Data and Calculations: The formula MaVa=MbVb helps to determine the concentration of the solution. Initial acid amount: 19.2 mL Molarity of NaOH: .10 M (Ma)(0.0192L)=(0.10M)(Vb) • Vb is what needs to be solved (in mL). Diving the number by 1000 will change it to Liters. Th
    358 words (6 pages) in essay
  • Trace of Arsenic
    Rice is a dietary staple, especially those of certain cultures. A variety of baby foods and formulas contain arsenic, which can be harm young children because of their underdeveloped brains and bodies. High-end organic formulas and baby foods contain high levels of arsenic. Developed humans are also affected. Levels of arsenic in rice have been linked to the genetic damage in humans and can increase the risk of cancer. Arsenic mixes into organic or inorganic compounds by seeping into water supp
    1575 words (8 pages) in essay
  • Behavioral Learning Theory vs Cognitive Learning Theory
    Behavioral Learning Theory vs. Cognitive Learning Theory Liberty University Psyc 365 Abstract: In the behavioral learning theory school of thought, theorists believe that an individual has learned or that learning has occurred when there are changes in behavior that can be observed. Within the behavioral learning model, learning is believed to be the result of conditioning. The basis of said conditioning is that there will be a reward, which is given following the desired response. The reward t
    2515 words (13 pages) in essay
  • Body Essay
    The function of the respiratory system is to provide oxygen for the human body. The function of the circulatory system is to deliver oxygen to the cells and remove carbon dioxide. This helps with the respiratory system. The structure of the respiratory system and the function of it parts are to provide oxygen for the body. It does this by taking air. The hairs in your nose filter out the bad stuff in the air. Next we have the trachea which is your windpipe, which also filters the air as you inh
    5633 words (21 pages) in essay
  • Stress Essay
    Everyone has experienced some type of stress for some it may be severe for others it may be mild. There are many things that can cause stress for people it ranges from, family troubles such as money to forgetting your homework. There are many types of stress which will be described below. There are also many ways that your body responds to stress or how stress might affect your body. It’s important to minimize your stress level for your health and there are many ways to minimize stress. There a
    610 words (3 pages) in essay
  • African Elephant
    The common name is the African Elephant, the scientific name is Loxodonta Africana, the phylum is Vertebrata, the class is Mammalia, the order is Proboscidea, and the family is Elephantidae. The Closest Relatives to the African Elephant are: the Asian Elephant, mammoths, primitive proboscidean (mastodons), sea cows, and hyraxes. Scientists believe that the African Elephant evolved from one of its closest The geographical location and range of the African elephant covers all of central and south
    1755 words (8 pages) in essay
  • Sibling Rivalry
    Sibling rivalry is as natural as the human tendency to solve problems through war and bloodshed. Throughout time siblings have competed against each other in every matter imaginable. These competitions sometimes result in happy, memorable times and sometime cause life altering consequences. The causes of the rivalry seem to be about differences in personality, people and experiences outside the family, or the need to be distinguished. It is particularly intense when siblings are very close in a
    330 words (2 pages) in essay
  • Infection Control
    Part I: Infection Control Sara King Bryant Stratton College AHLT 230: Medical Laboratory Cheryl Nickerson FNP-BC May 23, 2013 In the medical field/profession it is important to maintain asepsis as it is critical to the health and safety for both patients and health-care professionals. Asepsis, “a condition free from germs, infection and any form of life,” (Davis, 2005, p.196). Using the proper aseptic precautions medical assistants can help prevent the spread of disease by causing a break in the
    1551 words (7 pages) in essay
  • Gastritis
    The stomach is a rounded, hollow organ located just inferior to the diaphragm in the left part of the abdominal cavity. This organ is about 10 inches long with a diameter that varies, depending on how much you eat in a given time. Although the stomach can hold up to 4 liters when totally filled, it can expand or decrease thanks to deep, mucous-coated folds in the stomach called rugae. Rugae both allow the stomach to stretch in order to accommodate large meals and help to grip and move food durin
    1845 words (8 pages) in essay
  • Marine biologist
    Marine Biologist Biology, Chemistry, Physics Marine Biologists study the origins, behaviours, diseases, genetics and the life processes of animals and wildlife of the marine environment. Some marine biologists specialize in wildlife research and management, including the collection and analysis of biological data to determine the environmental effects of present and potential use of land and water areas. To become a marine biologist, you will need a bachelors degree in a biological science, a M
    536 words (3 pages) in essay
  • Solar Panel Quantitative Model
    SOLAR POWER MODELING QUANTITATIVE MODEL RESIDENCE IN BUFFALO,NY AND PHOENIX,AZ 1) QUANTITATIVE FORMULA: Number of Solar Panels = Electricity Demand of Site kwh/day DE rate Factor * Power Produced by One Panel kW * Solar Insolation h/day Area Required= Number of Panels *Area of Panel 2) ASSUMPTIONS: • Assume that all solar panels are oriented the same way • Assume intermittency is in terms of solar insolation • Assume that each residence in a city demands that same amount of electricity • Assume
    1453 words (13 pages) in essay
  • ISO 10993.10
    The animal intracutaneous (intradermal) reactivity test was conducted to assess whether the test article (PC) could produce irritation following intradermal injection of the extracts of the test article. This study was conducted based on the requirements for the International Organization for Standardization ISO 10993-10:2009 Biological evaluation of medical devices Part 10: Tests for irritation and skin sensitization. The test article was extracted in 0.9% sodium chloride solution (SC) and cott
    204 words (1 pages) in essay
  • Dreams
    Imagine waking up after dreaming about a horrible plane crash. The next day you plan to make a plane journey that you have planned long before. Will you get on the plane? A survey shows that you may not cancel your trip but your dream will probably influence your thoughts just as if there had been a real plane accident. The study says that dreams are a window to the mind and they may influence what we are really doing while we are awake. Until Sigmund Freud published his famous book on "The Inte
    259 words (2 pages) in essay
  • Genetic Engineering Research
    In the past three decades, scientists have learned how to mix and match characteristics among unrelated creatures by moving genes from one creature to another. This is called “genetic engineering.” Genetic Engineering is a test tube science and is prematurely applied in food production. There are estimates that food output must increase by 60 percent over the next 25 years to keep up with demand. Thus, the result of scientist genetically altering plants for more consumption. The two most common
    318 words (2 pages) in essay
  • Phlebotomist
    Education is known as the key to success, and this has become evident the older I get. I never realized however how evident this is to young children as young as ages 7 - 11 as well. After watching Chillot, Guggenheim, and Kimball’s documentary film, Waiting for “Superman”, I began to understand how important a good education is to young children and the consequences a bad education both directly and indirectly has on them. Not only are these children affected by their personal experiences, but
    248 words (1 pages) in essay
  • Do males and females have different abilities about estimating size?
    Abstract    The science project I did is about different abilities of males and females in estimating the size of four objects, the weight of the 1st bottle, the width of the television of the classroom, the length of the classroom from front to the back, and the volume of the 2nd bottle. And I think that males have stronger ability to estimating sizes, and the results which I did confirmed my hypothesis. And I shew my point in Discussion. I have tried make less error, and I
    1186 words (8 pages) in essay
  • Diabetes type 2
    Type 2 Diabetes Diabetes is a very well know and wide spread disorder. Nearly 18 million people in the US have diabetes. There are about 1,800 new people that become affected by type 2 diabetes every day. Diabetes ranks seventh among the leading causes of death in the United States and it causes more deaths than breast cancer and AIDS combined. There are three types of diabetes: Type 1 diabetes, Type 2 diabetes, and Gestational diabetes. There are many factors that play into the development of t
    1965 words (9 pages) in essay
  • Easy Quit
    A pharmaceutical company in southern China claims that it has developed an antismoking candy. According to a China spokesperson, the candy suppressed the desire to smoke in 90% of people using the candy as a tobacco substitute in experiments conducted by the company over the past 12 months. The candy, which can be viewed on the company\'s website, is a small, round, chewable candy which is currently available in cherry and coffee flavors. The company says it is working to expand the range of fla
    248 words (1 pages) in essay
  • Marine biologist
    Marine Biologist The field of marine biology - the study of marine organisms, their behaviors, and their interactions with the environment - is considered one of the most all-encompassing fields of oceanography. This field requires the ability to understand marine organisms and their behaviors. A marine biologist must have a basic understanding of other aspects or views of oceanography, such as chemical oceanography, physical oceanography, and geological oceanography. Therefore, marine biologist
    150 words (1 pages) in essay
  • Five Geological Regions of Georgia
    Five Geological Regions of Georgia The history of Georgia’s geology can be traced back at least one billion years. Georgia’s geology was impacted by the formation and erosion of mountain ranges, intense climate changes, flooding by the sea on numerous occasions, and volcanic eruptions. The state can be divided into five regions based on their characteristic landforms, types and ages of rocks, and geologic structures. The five regions are the Piedmont, Blue Ridge, Valley and Ridge, Appalachian P
    858 words (4 pages) in essay
  • P
    I felt right at home, the waitress referred to me by name, took interest in what I ordered, made suggestions, and checked on us as if she was on a timed schedule. The waitress’ attention to the customer alone was well worth stopping through, not to mention the food was delicious. Nothing like stopping in a place, early Monday morning, to get your favorite beverage where not only do they know your name, but they know what your drink as well. That’s exactly what this place provides, an experience
    389 words (2 pages) in essay
  • LEED-ing to a Greener Planet
    LEED-ing to a Greener Planet In our society a new state of thinking has occurred. We have become obsessed with having more, regardless of the consequences. We have become pleasure-seeking, only thinking of the present and having no care for the future. This new instinctual mindset encompasses our culture from the highest level to the lowest. It threatens the current generation, the future generation, and all the achievements of past generations. This threat is a lack of sustainability in any par
    2026 words (9 pages) in essay
  • artificial intelligence
    Assignment 1 Week 4 Online education has evolved over the last ten years as much as the cell phone. Given this, what have been some of the major improvements and changes in the digital classroom? I think there are more and more creditable universities out there just like Ashford University, with online classes now you can purchase most of your books as a e-book if that is what you prefer, when before you had no choice because e-books were not available. Being able to contact your instructor at a
    134 words (1 pages) in essay
  • The Effects of Advancing Technology on Society
    Technology is something that is necessary and very important in the world today. Almost everything uses technology, and almost everyone uses technology. It is even used right now. I am using technology to type this up while you are using it to read. Therefore, it is important to understand something we use in our everyday life properly and discuss whether it has a greater positive or negative impact. Technology has countless positive impacts on society today. Many important processes in the ind
    1013 words (4 pages) in essay
  • mEDICAL DISCOVERIES
    Laennec\'s embarrassment at the prospect of getting too close to the female anatomy of an attractive young woman may have motivated his invention at that moment, but he had long since been aware of another method of physical diagnosis which preceded and set the stage for his discovery of mediate auscultation. In 1761, the Austrian physician, Leopold Auenbrugger described percussion for the first time in his Inventor Novum. The text was a brief pamphlet that was translated into French and popular
    315 words (2 pages) in essay
  • infectious diseases
    Running Head Mosquitoes on the Go (Your Name (Your School (Your Instructor (Your Course )Abstract The number of illness in the world continues to increase while it has been very hard to find cure for each one more new diseases came to further weaken the whole humanity . The reason of having this paper is to further understand and share information regarding four diseases which dates back in the past years and already affected several people and killed some of the human population . Malaria , Yel
    500 words (2 pages) in essay
  • Jane Erye
    Jane Eyre?s Evolution The novel Jane Eyre, by Charlotte Bronte, consists of a continuous journey through Jane?s life towards her final happiness and freedom. Jane?s physical journeys contribute significantly to the idea that the novel is a journey through Jane?s life. Each journey causes her to experience new emotions and an eventual development of her character. These journeys help Jane on her four figurative excursions, each one allowing her to reflect and grow. Jane makes her journey from Gat
    635 words (3 pages) in essay
  • helium
    Helium (Greek Helios,"sun"), symbol He, is an inert, colorless, odorless gas element. In group 18 of the periodic table, helium is one of the noble gases. The atomic number of helium is 2. Pierre Janssen discovered helium in the spectrum of the corona of the sun during an eclipse in 1868. Shortly after it was identified as an element and named by the chemist Sir Edward Frankland and the British astronomer Sir Joseph Norman Lockyer. The gas was first isolated from terrestrial sources in 1895 by t
    733 words (4 pages) in essay
  • Hydroelectic Cars
    Hydroelectric Cars To understand hydroelectric cars, we must first understand the technology behind hydroelectric power. Hydroelectric power is gained through a somewhat simple process and now is being used for cars such as the 2010 Toyota Prius and also the Honda Civic Hybrid. This process simplified is that first off we have a falling water source. This water falls onto a turbine which therefore makes the turbine spin. According to the USGS, this then creates an electric generator, which is t
    614 words (3 pages) in essay
  • transistor
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    7705 words (36 pages) in essay
  • pancreatitis
    Etiology of Pancreatitis Pancreatitis is an inflammation of the pancreas. It occurs when pancreatic cells are damaged or there is a blockage of pancreatic enzyme secretion. The digestive enzymes within the pancreas are activated within its own tissues instead of the duodenum (Marchiondo, 2010). It is very serious and can be deadly. It falls under two different classifications, acute or chronic. Acute pancreatitis is brought on suddenly and is characterized by edema and inflammation confined to t
    666 words (4 pages) in essay
  • anthropology
    I have always had a dreaded fear of hospitals, just the thought of all the depressed people finding out that their loved ones are terminally ill always repelled me. So, when my sister asked me to accompany her to her appointment to have her permacath for dialysis put in, I wanted to scream ?No?. Instead I decided this would be a prime time to do my ethnography. At the corner of Marshall Street and 13th street stands an eight story beige cement building And Virginia Commonwealth University in big
    1822 words (8 pages) in essay
  • What is a Photodiode?
    In this lab you will investigate a practical application of the photoelectric effect, namely its use in "photodiodes" that measure the intensity (brightness) of incident light. A photodiode is a part of an electrical circuit (a ?circuit element?) that releases electrons when light shines on it. The "photo" prefix refers to the incident light; the "diode" suffix is electrical engineering jargon that means that when the electrons are liberated, they can only flow in one direction through the circu
    177 words (1 pages) in essay
  • The influence of marine biofilms on corrosion: A concise review
    a b s t r a c t The following is a concise review of the literature that addresses the impact of marine biofilms on two phenomena?ennoblement of corrosion potential and sulfide derivitization due to sulfate-reducing bacteria. A universally defined mechanism of potential ennoblement has not been established. Extent of ennoblement varies among locations and the extent of ennoblement for a particular material cannot be used to predict an increased likelihood of localized corrosion. There is some co
    183 words (1 pages) in essay
  • Immigraion
    Abstract With millions of illegal immigrants already in the United States and at least half a million being able to gain access into the country annually, it is no doubt that they have an extensive effect on the country. It has been argued that illegal immigrants put a strain on the economy of the country and can be a social nuisance. They also have a major influence on the various decisions and policies that are made in the country. Whether the net effect of illegal immigration is positive or n
    4295 words (19 pages) in essay
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    194 words (1 pages) in essay