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Solutions Around You

... is a solution. Air, ocean water, somebody fluids, and brass are also solution. A solution is a homogenous mixture of two or more substances in a single physical state. Solutions are all around you. All solutions share several important properties. The particles in a solution are very small. In fact, they are atoms, molecules, or ions, which is why you cannot see them. The particles in a solution are evenly disturbed, or intermingled informally on a molecular level. A small sample of one part of a solution. The particles in a sol ...

Number of words: 543 | Number of pages: 2

Center Of Gravity

... center of gravity changes and it begins to move one way or another. The center of gravity of a symmetrical uniform object lies at the object's center, but it may lie outside the center if any weight is added or subtracted. Many toys that have trouble balancing themselves, have their actual center of gravity far from where an observer would locate it. Another example of the importance of the center of gravity is how an airplane flies. If the center of gravity is too far forward, the plane will have an unstable equilibrium and in turn will tak ...

Number of words: 958 | Number of pages: 4

Global Warming ------

... disease. Global warming occurs when the levels of greenhouse gasses rise and less infrared light, or heat, escapes the earth's atmosphere. Thus, the temperature experienced on Earth begins to rise. Climate change is a part of the Earth's history. There have been dramatic fluctuations in overall average temperature for the past 150,000 years that are a direct association with carbon dioxide levels. In the past the temperature highs and lows have been the same with carbon dioxide level highs and lows, this does not seem to be a mere coinc ...

Number of words: 847 | Number of pages: 4

Preservation Of The Environment

... which causes a range of respiratory ailments, remains a serious health risk in most American cities, and in some areas it's getting worse. Many of the industrial sources that create the bulk of ozone-forming pollution are in violation of the law. Or consider water. In early September over 1,000 people drank contaminated water at a county fair in upstate New York. Two died and 65 others were hospitalized. If you think this couldn't happen to you, think again. A recent federal audit found that nearly 90 percent of all violations of the Safe ...

Number of words: 849 | Number of pages: 4

Determination Of An Unknown Amino Acid From Titration

... by the general structure shown in figure 1. Fig. 1 Although the general structure of all amino acids follows figure 1, the presence of a zwitterion is made possible due to the basic properties of the NH2 group and the acidic properties of the COOH group. The amine group (NH2) is Lewis base because it has a lone electron pair which makes it susceptible to a coordinate covalent bond with a hydrogen ion. Also, the carboxylic group is a Lewis acidic because it is able to donate a hydrogen ion (Kotz et al., 1996). Other forms of ami ...

Number of words: 1634 | Number of pages: 6

Black Holes 3

... that one could easily crush an enormous amount of matter into an incredibly small space. For instance, if the earth were to be squeezed into a black hole, it would end up as the size of a marble. A black hole forms when a super massive star has “used up” all of its nuclear fuel and then collapses under its own gravitational force. This happens because, as a star burns fuel, it creates an outward push, which counteracts the inward pull of gravity. Once the fuel is gone, the internal pressure of the star drops and it can no longer sup ...

Number of words: 1072 | Number of pages: 4

The Aging Process

... expectancy of 78.3 years and men 71.1 years. Yet these figures have very little to do with potential life expectancy, because most people have their life altered and cut short from disease and disability, not from aging. No one is so old as to think he cannot live one more year. -- Cicero (106-43 B.C.) It is still true that approximately 70% of all deaths in the United States are from heart disease, strokes, and cancer. Other diseases, accidents, and violence account for the rest--but not age. These same diseases and Alzheimer's dise ...

Number of words: 1487 | Number of pages: 6

Dolphins

... freshwater dolphins that live in rivers of Asia and South America. The Buffeo dolphin has been spotted up to 1250 miles up he Amazon River. The buffeo is the smallest of all dolphins averaging about 4 feet. The bottlenose is closer to 10 feet. The killer whale, which is also considered a dolphin, can grow to be 30 feet long. The pilot whale is also considered a dolphin. Dolphins were once hunted by commercial boats for the small amount of oil that can be extracted from their body. This oil is used to lubricate small parts in watches. Che ...

Number of words: 878 | Number of pages: 4

The Environmental Impact Of Eating Beef And Dairy Products

... percent of Central America's forests have been cleared to create pastureland for grazing cattle. By the late 1970's two-thirds of all agricultural land in Central America was occupied by cattle and other livestock. More than half the rual families in Central America-35 million people-are now landless or own too litle land to support themselves. Cattle are also a major cause of desertification around the planet. Today about 1.3 billion cattle are trampling and stripping much of the vegetative cover from the earth's remaining grasslands. ...

Number of words: 1835 | Number of pages: 7

Sharks

... seal frantically tried to find a place to seek refuge, but it was too late. The jaws of the shark closed around the seal with an astounding 14,000 pounds of pressure, cutting the seal in half. The Great White shark claims another victim.1" Any one who’s seen the famous movie series "Jaws" may look at the Great White Shark in a similar manner. Perhaps it’s the way that Hollywood uses a mix of fact and fiction in the series. This may have frightened many people into hating the Great White for it’s ferocity. It might have also be ...

Number of words: 2116 | Number of pages: 8

Disease In Africa

... The Sahara and the Kalahari deserts are located here. Then there is the savanna regions, which are covered with grass and trees. The savanna regions occupy the largest physical region in all of Africa. The region along the equator is made up of thick and humid forest growth. This type of physical region is located in the Congo Basin along the equator. It is important to understand the geology of Africa, because many of the diseases, which were born, had a lot to do with the climate and land region they were growing in. Africa has str ...

Number of words: 4745 | Number of pages: 18

Murder, Rape, And DNA

... blood. If they match, this information and testimony of a scientist can be used to convict a rapist or murderer. In the O.J. Simpson case DNA Typing was used. There was blood found on various areas at the crime scene. The investigators gathered the evidence, and took it to the laboratory where it was analyzed. The jury determined that the samples were contaminated because of the way they were handled. DNA Typing is not perfect. There are many loop holes in it. An example is the O.J. Simpson trial. During the process the DNA may ...

Number of words: 340 | Number of pages: 2

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