Get Essays On Science and Nature

Home « Join Now! « Member Login « Questions « Support «

Enter Topic

» Get Science and Nature Papers

Destruction Of The Ozone Layer

... in the world need to do more. "Ozone is a form of oxygen that is present in the Earth's atmosphere in small amounts." The presence of ozone makes it possible for life on Earth. Ozone is made naturally by photochemical and discharge reactions. Photochemical production occurs when, " high energy radiation from the sun strikes ordinary oxygen molecules in the upper atmosphere." Lightening and sparks from motors also convert oxygen to ozone ( Stoker 1). The question about the destruction of the ozone layer revolves around whether human-m ...

Number of words: 1143 | Number of pages: 5

Capacitors

... jar, which has the two plates that are coated with a metal- foil on both sides. The coated plates sit in a glass jar, which then acts as a dielectric. are produced in a wide variety of forms. Each form has a different purpose, but they all seem to do the same thing. are generally classified according to the kind of dielectric used in them. The capacitance of a capacitor is measured in farads. A farad retains one coulomb of charge with one-volt difference of potential. that use vacuum, air, or other gases are used in applications whe ...

Number of words: 504 | Number of pages: 2

Fusion

... turn gave rise to many more questions. What keeps the stars burning? Have they always been glowing, or are they born like humans, and thus will they die? The answers to all these questions can be summed up in two words; stellar fusion. Therefore one can begin to understand the stars by understanding what fusion is, how it affects the life of a star, and what happens to a star when fusion can no longer occur. The first question one must ask is, "What is fusion?" One simple way of explaining it is taking two balls of clay and mashing them in ...

Number of words: 1845 | Number of pages: 7

Copper

... to melt copper with tin to make bronze. So the period between 3000 B.C and 1100 B.C became known as the bronze age. Today, some of the leading states of the copper industry are Arizona with 747,000 short tons, Utah with 187,000 short tons, New Mexico with 161,000 short tons. Some other leading countries are Chile with 1,422,000 short tons, United States with 1,203,000 short tons, Soviet Union with 650,000 short tons, and Zambia with 596,000 short tons. When copper is being mined, both Native copper and copper ore are usually found. The ...

Number of words: 664 | Number of pages: 3

Bacterial Resistance

... had created had solved many of the problems resulting from bacterial infections. An increasing amount of attention has been given to antibiotic resistance with each passing year and experts are optimistic for the future; however, the threat of exists today and is a major cause for concern. The discovery of penicillin the 1940s proved to be the dawn of the antibiotic era. In less than two decades, major advancements had been made in the development of antibiotics. There were so many different antibiotics developed that doctors and scient ...

Number of words: 619 | Number of pages: 3

Acid Rain

... resources release pollutants such as sulfur, carbon and nitrogen oxides into the air. These oxide combine with the humidity in the air and form sulfuric, nitric and carbonic acid. This acidic solution eventually condenses in the air and comes back down to the earth in any from of precipitation (snow, rain, hail). Upon returning to the earth, the acidic precipitation can have serious repercussions on both the environment and as well as human structures. On average, acid rain is about nine times more acidic than rain water, and has been ...

Number of words: 952 | Number of pages: 4

Acquired Immune Deficiency Syndrome

... with HIV and have no symptoms at all. You might feel perfectly healthy, but if you are infected, you can pass the virus to anyone you may have unprotected sex or share needles or syringes with. AIDS and HIV are two different viruses, but HIV well eventually turn into AIDS. About half the people with HIV develop AIDS within 10 years, but between infection with HIV, the onset for AIDS can vary greatly. The severity of the HIV related illness or illnesses will differ from person to person, according many factors but mostly to the over ...

Number of words: 736 | Number of pages: 3

Phosphates

... in both plants and animals, help in the first step in oxidation of glucose in the body. Primary calcium phosphate is an ingredient of plant fertilizer. Phosphates have caused increasing attention recently. The focus is on the environmentally harmful effects in household detergents. Wastewater, from laundering agents, contains phosphates, which are said to be a water pollutant. Most laundry detergents contain approximately 35% to 75% sodium triphosphate (Na5P3O10), which serves two purposes. Providing an alkaline solution ...

Number of words: 865 | Number of pages: 4

Hurricane Flloyd

... Floyd had maximum winds of 40 mph and was forecast to intensify to minimal hurricane strength with maximum sustained winds of 75 mph. Tropical storm force winds extended up to 85 miles from the center of the storm. The system moved west-northwest at 16 mph and forecasters expected Floyd to continue along this track for 72 hours. Floyd was in an area very favorable for development and satellite images indicated the system was strengthening. The center of the system was not yet well defined, but forecasters believed Floyd could reach ...

Number of words: 1093 | Number of pages: 4

The MOBOT Project: Longwood

... is efficient as well as cost effective. The goal of the MOBOT Project was to design and build a programmable robot. The robot had to complete a series of four movements in four given directions over a distance of at least 6 inches. Power and weight restrictions were applied to ensure the safety of the students and, more importantly, the teacher. As the goals of the project were made clearer, our group began discussing possible ideas for the design. There were some disagreements about whether we should take the electromechanical route or ...

Number of words: 594 | Number of pages: 3

The Environment Is Going To Hell

... that works out to almost 2000 species per weak, 300 per day, 10 per hour, another dead species every 6 minutes. We're trashing the planet, washing away the topsoil, paving over our farmlands, systematically deforesting our wildernesses, decimating the biota, and ultimately killing ourselves. The world is getting progressively poorer, and it's all because of populating, or more precisely, over-population. There's a finite store of resources on our pale blue dot, spaceship Earth, our small and fragile tiny planet, and we're fast apporachi ...

Number of words: 285 | Number of pages: 2

Celiac Sprue Disease

... celiac sprue, nontropical sprue, and idiopathic steatorrhea, is a disease whose extensive and variable symptoms challenge physicians to make a correct diagnosis in a timely fashion. The term "celiac sprue" has been applied to a clinical syndrome characterized by signs and symptoms of malabsorption, such as diarrhea and weight loss caused by eating grains. The term "gluten-sensitive enteropathy" more correctly defines the clinical pathologic disease caused by an immune-mediated sensitivity to gluten, a protein found in many cereal gra ...

Number of words: 1518 | Number of pages: 6

Pages: 1 ... 122 123 124 125 126 127 128 129 130 131 132 next »

Essay Categories

» Get Science and Nature Papers