Science Essays Examples For College & High School Students in PDF

14278 total results

Information About Citrine Mineral and the Process of Rock Cycle (1848 words, 6 pages)

According to Websters Dictionary, the definition of a mineral is an inorganic substance. Citrine is one of the most popular minerals. It is a variety of quartz. Citrine is a yellowish-orange mineral. Citrine is a very popular gemstone because it is very affordable and very pretty. Along with topaz, citrine ... Read More

An Analysis of Potassium, The Chemical Element (646 words, 2 pages)

potassiumpuh-tas'-ee-uhmThe chemical element potassium is a soft, light, silver white metal. It is a member of the alkali metals, a group (IA of the periodic table) with similar physical and chemical properties. Its chemical symbol is K (from kalium, the Latinized version of the Arabic word for "alkali"). Its atomic ... Read More

An Introduction to the Properties of an Element Radon (577 words, 2 pages)

Radon is an element that is on the periodic table of elements. It is a member of the family called the noble gases, which is group number 18. Radon is a gas. It is a gas at 298 k. it is the heaviest known mononuclear gas at that temperature. Radon ... Read More

A Look at the Biological Control in Crop Production (804 words, 2 pages)

With the ever-increasing problem of pest control, it is clear that some form biological must be implemented in order to help farmers. This biological control must be able to effectively control the pest population, this means not killing them but rather never letting the pest populations get too large. Through ... Read More

An In-Depth Look at the Synthesis, Structure and Use of Polymers (441 words, 2 pages)

Polymer, substance consisting of large molecules that are made of many small, repeating units called monomers, or mers. The number of repeating units in one large molecule is called the degree of polymerization. Materials with a very high degree of polymerization are called high polymers. Polymers consisting of only one ... Read More

A Description of the Process by Which Salivary Amylase Breaks Down Starch into Maltose (988 words, 4 pages)

Salivary Amylase LabIn this laboratory, I observed the process by which salivary amylase, an enzyme secreted by the salivary glands in the mouth, breaks starch down into maltose. This requires a relatively straightforward experiment with only a couple of indicators, some test tubes, and a starch source. To understand the ... Read More

A Look at Great Chemists in History (1933 words, 11 pages)

Chemical reactions are the heart of chemistry. People havealways known that they exist. The Ancient Greeks were the firststo speculate on the composition of matter. They thought that itwas possible that individual particles made up matter. Later, in the Seventeenth Century, a German chemist namedGeorg Ernst Stahl was the first ... Read More

The Importance of Silicon as a Popular Semiconductor Material Used Today (1451 words, 2 pages)

Silicon is the raw material most often used in integrated circuit (IC) fabrication. It is the second most abundant substance on the earth. It is extracted from rocks and common beach sand and put through an exhaustive purification process. In this form, silicon is the purist industrial substance that man ... Read More

An Analysis of Stem Cell Research Influence (1393 words, 3 pages)

Should Embryo Stem Cell Research Be Banned?This is one of the most controversial questions posed in the last century. The issue is simple. Should the federal government fund embryo stem cell research? The answer is extremely complex. At the heart of this controversy, is whether or not, it is morally ... Read More

Scientists Set up SETI Program to Probe for Life Outside Earth (1653 words, 3 pages)

Bertrand Russell wrote, There are two possibilities. Maybe we are alone. Maybe we are not. Both are equally frightening (Jakosky 1). The question of life in the universe is one that leaves many in a state of bewilderment. It becomes even more interesting when it leads to another question that ... Read More

An Analysis of Sex Hormones in Women (639 words, 2 pages)

SEX HORMONES IN WOMENThe main issue I m going to discuss is Premenstrual Syndrome, or PMS. It is a constellation of symptoms that directly precedes menstruation. These symptoms vary from woman to woman. PMS is a hormonal disorder characterized by a regularly recurring group of symptoms. These symptoms may occur ... Read More

An Overview of Oceanography Salt Marshes (620 words, 1 pages)

Oceanography Salt MarshesSalt marshes are coastal wetlands rich in marine life, which are covered by water at least once per month. They are found in the intertidal zones along low-energy coastlines, forming along the margins of estuaries, where freshwater from the land mixes with seawater. These marshes can be found ... Read More

A Biography of Ernest Rutherford, Nobel Prize Winner in the Science of Chemistry (753 words, 1 pages)

Ernest RutherfordErnest Rutherford was born in New Zealand in 1871 as one of 12 children. It was Rutherford who first "split" an atom and who discovered the atomic "nucleus", a name that he invented. For this he is regarded as the greatest experimental physicist of his time. Rutherford was one ... Read More

A Qualitative Analysis of a Chemical Process (2100 words, 5 pages)

Qualitative AnalysisIntroductionQualitative analysis is used in the determination of the identity of a substance. It is different from quantitative analysis, which deals with the determination of the amount of a substance. In this experiment, qualitative analysis techniques are used to determine whether or not a sample contains a certain ion. ... Read More

An Analysis of the Universe in Ray Kurzweil’s Book The Age of Spiritual Machines (642 words, 1 pages)

In the first chapter of his book The Age of Spiritual Machines, author Ray Kurzweil gives a very brief history of the Universe, which serves as a preface for his subsequent theories. In this history, Kurzweil chronicles the rapid expansion of time between salient events in the history of the ... Read More

An Analysis of Quantum Mechanic Laws and Experiments (1020 words, 2 pages)

Quantim Mechanics is abranch of mathematical physics that deals with the emission and absorption of energy by matter and with the motion of material particles. Because it holds that energy and matter exist in tiny, discrete amounts, quantum mechanics is particularly applicable to Elamentry Pprticlesand the interactions between them. According ... Read More

An Analysis of Hydro Power as an Alternate Power Source (295 words, 1 pages)

Hydro PowerMy alternative power source is Hydro power. It comes from water. The oldest and simplest form was the water wheel first used in ancient Greece for grinding grain. The water wheel design was changed by Jean Victor Poncelet in the 18th century. He made the blades curved which raised ... Read More

A Test on the Effects of Nitrates on a Pond Community (958 words, 7 pages)

IntroductionIn the pond water lab experiment, our group has chosen to test the effects of nitrates on a pond community. After a lot of research, we have found that nitrates in a pond community can increase growth rates of plants and some animals. The effects of nitrates include algal blooms, ... Read More

An Argument in Favor of Polyethylene in Productiction (1166 words, 3 pages)

Year 11 Chemistry Unit 1POLYETHENE-ain't it choice!word count 1131Polyethene also known as polyethylene or polythene, was the first of the polymers to be discovered. Polyethene is a polymer produced by reacting oxygen and ethene, in this reaction the small ethene molecules attach together to form long chain polymer molecules. This ... Read More

An Overview of the Element Phosphorus and Its Uses (1143 words, 4 pages)

PHOSPHORUSIntroductionThe element that is featured in this report is phosphorus. Phosphorus is a chemical element that human beings, animals, and plants need for normal growth. The main use of phosphorus is fertilizer. It was difficult to find a lot of different information on this element.DescriptionPhosphorus is a nonmetallic chemical element ... Read More

A Biography of the Life and Influence of French Chemist Louis Pasteur (1030 words, 3 pages)

PASTEUR, Louis (1822-95). The French chemist Louis Pasteur devoted his life to solving practical problems of industry, agriculture, and medicine. His discoveries have saved countless lives and created new wealth for the world. Among his discoveries are the pasteurization process and ways of preventing silkworm diseases, anthrax, chicken cholera, and ... Read More

The Prevention and Management of Osteoporosis in Adults (1495 words, 2 pages)

COMBATING OSTEOPOROSISTwenty years ago osteoporosis was a word used mainly by researchers and physicians. Over the past few years, there has been an explosion of information about this condition that can cause severe pain and crippling. No cure is known yet, but ways to lessen your potential for osteoporosis have ... Read More

An Analysis of the Parasitic Characteristics (3127 words, 5 pages)

INTRODUCTIONImagine going to the doctor for a simple check up. Sure you've had some minor problems- indigestion, lack of energy, weight loss, and a bit of gas- but that's not out of the ordinary....or is it? In most cases you would be correct...but today is your unlucky day. The doctor ... Read More

A Research on Astronomy Reports by Patrick Sullivan (483 words, 2 pages)

Patrick Sullivan2nd hour AstronomyMr. WesslingMagazine ReportSky TelescopeThe Future of the UniverseThe magazine Sky Telescope is a very helpful magazine for beginning and amateur astronomers. The magazine contains information on new star clusters, constellations, galaxies, and even possible new planets. It gives a more in-depth look at whats going on outside ... Read More

Background Information of the Planet Saturn (730 words, 2 pages)

Jessica AlcaldeEarth and SpaceSaturnSATURNSaturn is the sixth planet from the sun and it is the second largest of the nine planets in the solar system. In Roman mythology it was believed to be the god of agriculture, he ate his children. Its Greek name is Cronos. Saturn is distinctively known ... Read More

A Report of Rot Race Laboratory (341 words, 1 pages)

Biology4th BlockRot Race Lab ReportName Rot Race Purpose To see how fast organisms and materials decay under certain conditions.Procedure We gathered 4 2-liter plastic pop bottles and cut them to assemble the drawing below. Near the bottom we placed a siv to let juices drain through into the bottom 2-liter. ... Read More

An Analysis of the Expression of a Gene in Protein Synthesis (1603 words, 3 pages)

Protein SynthesisThe Expression of a GeneThe process of Protein Synthesis involves many parts of the cell. Unlike other similar productions, this process is very complex and precise and therefore must be done in proper sequence to work effectively. The slightest error during this process could cause the action to experience ... Read More

A Biology Lab Report on the Properties of the Amylase Enzyme (855 words, 2 pages)

Biology Lab ReportTitle Examining Some Properties of the Enzyme -amylaseIntroduction In this experiment a deeper meaning in the catalysts of reactions is studied. Catalysts accelerate chemical reactions without permanently changing the reaction. Enzymes, catalysts in biochemical reactions, are globular proteins which lower the activation energy needed to begin a reaction ... Read More

A Discussion About the Particle Cloud Chamber (1900 words, 3 pages)

Particle Cloud ChamberAbstractA particle cloud chamber is a device that makes visible to the human eye the presence of certain particles and cosmic rays. This paper will discuss the process in which a successful chamber prototype was developed. This paper will also discuss how the chamber utilizes the properties of ... Read More

A Description of the Process of Diffusion (630 words, 1 pages)

Diffusion is the movement of particles from an area of higher concentration to an area of lower concentration. Diffusion results because of the random movement of particles. The diffusion of water into and out of a selectively permeable membrane is called osmosis. Because of the selectively permeable membrane, nothing but ... Read More

Science Essay Examples