Science Essays Examples For College & High School Students in PDF

14278 total results

An Analysis of Methanol For Our Future (529 words, 1 pages)

Methanol for Our FutureThis section is about methanol fuel cells for our future. Since I have done this research I have never realized how important future fuels are. Methanol is a liquid fuel made form natural gas or renewable biomass resources. Methanol is the leading candidate to provide the hydrogen ... Read More

The Continuous Variations Method used to Determine the Levels of Ethylenediamine Complexes (394 words, 2 pages)

Objective The objective of this experiment is to study the continuous variations method that is used to determine the composition of the solution Ni2 ethylenediamine complexes. Background To examine the interaction between two molecules in solution without isolating the compound Jobs method is used. Although unstable compounds tend to be ... Read More

How Magnetically Levitated Trains Work (213 words, 1 pages)

My topic is Magnetically Levitated Trains and I created a Maglev train to show how it works and at what strength the magnets I used were to hold the train up. For the experiment I used four strips of magnets, two pieces of wood for the train, two plastic rails, ... Read More

The Process of Refining Crude Oil (549 words, 2 pages)

CHEMISTRY ISU REFINEMENT OF CRUDE OILMy ISU will focus on Petroleum, a complex mixture of hydrocarbons that occurs in the Earth in liquid, gaseous, or solid forms. The term is usually restricted to the liquid form, commonly called crude oil, but as a technical term it also includes natural gas ... Read More

Gregor Mendel: Father of the Discipline of Genetics (582 words, 3 pages)

Gregor Mendel is considered the father of the discipline of Genetics. It is ironic thathe bears this exposition, because Gregor Mendel never used the term gene or genetics in his life.It was not until 1905, twenty-one year after Mendels death, that William Bateson baptizedMendels work as genetics. Like many brilliant ... Read More

Buzzing in a Bees Life (660 words, 1 pages)

THE BEE ESSAYThe worker bees live a very short life. Their average life span is about six weeks. The worker bees are the sterile females of the bee population. They feed honey and pollen to the queen of the hive. The worker bees are called nurse bees when they enter ... Read More

A Comparison of Organisms in Different Microhabitats (575 words, 2 pages)

A Comparison of Organisms in Different MicrohabitatsJessica HilkeyMeeker High School, Meeker, CO 81641Abstract On September 12 we started a long-term study of the foothills zone north of the Meeker High School. We evaluated the different organisms in different microhabitats, and studied to see if the habitats were significantly different. Our ... Read More

Genetic Engineering Can Save Human Lives (624 words, 1 pages)

An elderly man develops macular degeneration, a disease that destroys vision. To bolster his failing eyesight, he receives a transplant of healthy retinal tissue--cloned from his own cells and cultivated in a lab dish. A baby girl is born free of the gene that causes Tay-Sachs disease, although both her ... Read More

An Analysis of the 3 Main Stages of Photosynthesis (203 words, 1 pages)

Photosynthesis occurs in 3 main stages energy is captured from sunlight, then its converted into chemical energy and stored in organic molecules.Photosystems are light harvesting units of the thylakoid membrane. Each photosystem has four hundred pigment molecules. A photon hits the pigment molecules and travels through each molecule and then ... Read More

A Lab Analysis of SDS-PAGE (496 words, 2 pages)

Materials and Methods and Results for lab 4.Materials and MethodsHomogenizationSpinach leaves were used. The large veins were removed and the sample was weighed. Four grams were used to start. The leaves were chopped finely and added to an ice-cold mortar with 15 ml of homogenization buffer( .33M sorbitol, .05M HEPES, ... Read More

The Harmful Role of the Round Goby, a Non-Native Species in an Eco-System (530 words, 1 pages)

The Round GobyAs if there werent enough problems for scientists trying to save the Great Lakes Eco System. Many non-native species have entered the eco system and many of them are harmful. Every species in itself has played a role in the eco system. These non-native species make it increasingly ... Read More

A Description of the Blue Crab, the Beautiful Savory Swimmer (422 words, 2 pages)

The scientific name given to the blue crab was derived from Latin and GreekCalli, beautiful nectes, swimmer and sapidus, savory. Thus, a literaltransition might be the beautiful savory swimmer.The blue crab is an important and interesting species. The blue crab isa species whose life history involves a complex cycle of ... Read More

An Overview of the Importance of the Process of Nitrigen Cycle and Fixation (432 words, 1 pages)

The nitrogen cycle is an important cycle to the atmosphere. Nitrogen is an essential part of the biological molecules such as proteins and nucleic acid, which makes nitrogen essential for all living organisms. Nitrogen makes up 78 percent of the atmosphere. There are five steps in the nitrogen cycle between ... Read More

A Description of the Stages in the Process of Mitosis (445 words, 1 pages)

MitosisThe Process of Mitosis is the term used to describe cell division for replication. The product at the end of mitosis is two daughter cells both genetically identical to the original (parent) cell. This process is used for growth and repair within an organism and also for asexual reproduction. There ... Read More

The Discovery of Neon in 1898 and Its Properties (437 words, 2 pages)

Neon was discovered in 1898 by British chemists Sir William Ramsay and Morris W. Travers as a component of the most volatile fraction of liquefied crude argon obtained from air. Upon applying an electric current to it, the chemists found that it had an orange glow, and they decided that ... Read More

An Analysis of the Polystyrene Bead Molding Project Using Two Different Methods (553 words, 2 pages)

IntroductionOn September 7th and 14th of 2000 my lab partners and I conducted the polystyrene bead molding project. My lab partners are Josh Dick, Mike Ward, and Keith Matlock, and we conducted the procedure in room W126 of the Kansas Technology Center. We were to attempt to make polystyrene bead ... Read More

How the New York City’s Sewage and Garbage is Treated (527 words, 1 pages)

How is New York Citys sewage and garbage treatedYou ever wonder where the stuff you flush down the toilet goes? Or where the water goes after you brush your teeth? Or whats under those manholes that has sewage written on it? What happens when you throw wasted in the garbage? ... Read More

A List of the Properties of Ionic Compounds (463 words, 3 pages)

Lab Ionic and Covalent CompoundsPre-Lab1. List the properties of ionic compounds.- Solids at room temperature.- Soluble in water.- Conduct electricity (while in solution).- Very high melting and boiling points.2. List the properties of covalent compounds.- Solids, liquids, or gases at room temperature.- May or may not be soluble in water.- ... Read More

The Discovery of Atoms and Structure of the Chemical Periodic Table (349 words, 2 pages)

Periodic TableFirst noticed by Greek people in about 400BC. They used the wordselement, and atom to describe the differences and smallest parts ofmatter. Those ideas lasted for 2000 years. Elements were Earth, Fire, Air,and Water that explained world stuff easily came and went.In the 1600s Boyle, an experimenter, influenced by ... Read More

A Debate About the Continuing Old Argument Concerning Evolution (432 words, 1 pages)

EvolutionismThe age old argument concerning evolution continues to go on. Was man created by a greater being or did he evolve from other animals? The debate unfolds in this hot stuff essay.There are two sides of man's physical history. One side is that God created the world in seven days, ... Read More

The Medical Uses of the Hypericum perforatum “St.John’s Wort” (390 words, 1 pages)

Hypericum perforatum, or, more commonly know as St. Johns wort is a perennial that has been used for centuries for many medical uses. The name Hypericum is derived from the Greek name for the plant hyperikon. St. Johns wort gets its common name from the medieval times when it was ... Read More

Berkeley Argued That Objects Are Not Made up of Atoms and Photons (1004 words, 2 pages)

The central part of Berkeleys metaphysics seems paradoxical or even absurd. Its claim is that what we call solid, and indeed everything else that we find laid out in the three-dimensional physical word that is apparently around us, is only fictional. It appears to be there, but it does not ... Read More

Leonardo Da Vinci: The Greatest Experimental Scientist of the Renaissance (1060 words, 2 pages)

Leonardo da Vinci was born in April 15, 1452 in Vinci, Italy. Leonardo's accomplishments have earned him a place among the most prolific geniuses of history. Leonardo Da Vinci was one of the greatest artists of the Italian Renaissance, and the greatest experimental scientist of his age. He displayed genius ... Read More

The Preparation of Organic Compounds “Aspirin and Wintergreen Oil’ (396 words, 2 pages)

Title of Experiment The Preparation of Organic Compounds Aspirins and Oil of WintergreenIntroductionThe purpose of this experiment is to prepare two organic compounds (aspirin and oil of wintergreen) and to illustrate the typical organic reactions. Students will also learn some techniques commonly used in organic synthesis and the meaning of ... Read More

An Analysis of the Method of Determining the Molar Volume of a Gas (450 words, 2 pages)

IntroductionThis lab was designed so that we, the students, could learn how to determine the molar volume of a gas effectively. MethodThe first step that we took to accomplish our goal was to put on our safety goggles and choose a lab station to work at. We received one 400ml ... Read More

The Good Things That Comes out of Cloning (418 words, 1 pages)

A clone is really just a time-delayed identical twin of another animal or person. Cloning is accomplished by getting two cells to fuse to become one. The egg gains a full set of genes from the adult and thinks it has been fertilized. Then it begins to divide and become ... Read More

The History of the Hydrogen Bomb (406 words, 1 pages)

The Hydrogen BombThe history and workings of this massive bombBack in 1905 Albert Einstein published his special theory of relativity. According to this theory the relation between mass and energy is expressed by the equation Emc squared, which states that a given mass (m) is associated with an amount of ... Read More

The Importance and Use of the Human Growth Hormone (364 words, 1 pages)

Human Growth HormoneHuman Growth Hormone is a chemical formula that prevents biological aging. To most people, the only thing known to do the same as HGH is the fountain of youth. HGH is one of many endocrine hormones found in the human anotomy, like estrogen, progestorene, testosterone, melatonin and DHEA, ... Read More

A Look at Electric Magnetic Fields (EMFs) and its Risks (391 words, 2 pages)

Homes are filled with electric magnetic fields (EMFs), EMFs are created every time anything electrical is used. Hair dryers, alarm clocks, micro waves and radios are just a few examples. All these appliances cause leukemia, a form of cancer.High EMF fields are not very unusual. EMFs can pass through walls, ... Read More

The Two Models of Sympatric Specialization That Explain the Origin of Species (340 words, 1 pages)

Despite the title of Charles Darwin's most famous work, the mechanisms whereby species originate are poorly known. The textbook view is that populations of a species become physically separated, so that individuals are denied the opportunity of interbreeding. Over time, the genetic idiosyncrasies of each population will increase until they ... Read More

Science Essay Examples