I choose thus project because when watching television both name brand
batteries claim to be the best. I wanted to see which one actually did last the longest.
The Encyclopedia’s I did my research in say a battery is a device which
transforms chemical energy. The term is usually applied to a group of two or more
connected together electrically. In comman usage the term battery is also applied to a
single cell, such as a flashlig...
Antibiotic Resistance In Bacteria Antibiotic Resistance In Bacteria
For about 50 years, antibiotics have been the answer to many bacterial infections. Antibiotics
are chemical substances that are secreted by living things. Doctors prescribed these medicines to
cure many diseases. During World War II, it treated one of the biggest killers during wartime -
infected wounds. It was the beginning of the antibiotic era. But just when antibiotics were being
mass produced, bacteria started to evolve and became resistant to these medic...
Technology is a great thing, it aids man in the exploration of the universe, and himself. But there are times when technology can be the greatest downfall of man. One such time was when the creation of the nuclear bomb. Which was to be used in the Was in efforts to end it.
In 1939, a group of scientists, including Albert Einstein, wrote a letter to President Roosevelt to warn of the Nazi’s effort to purify Uranium-235, which would be used in the creation of a bomb of mass-destru...
In order to investigate the effects of geography on climate, I selected
two cities, both on the same continent, both at approximately the same
latitude, and both on major bodies of water. I compared the monthly
temperature and precipitation averages of New York City with the monthly
temperature and precipitation averages of San Francisco. I also recorded the
daily temperatures of the two cities over the course of three months. What I
found is reflected in this report.
New York Cit...
Volcanos occur all over the world.The best know volcano zones occur on the destructive plate
margin around the Pacific Ring of Fire.This chain of volcanos that lie along the west coast of central and
south America,Japan and the Philippines,across New Zealand and into the Atlantic.Volcanos also occur in
mid-ocean along the line of ocean ridges.The Mid-Atlantic Ridge is an example of ocean floor
volcanos.When these volcanos erupt lava flows from the cracks building up the ocean floor...
Isotopes And Atomic Mass Isotopes and Atomic Mass
1. Determine the average weight of each isotope of the fictitious element vegium.
2. Determine the relative abundance of isotopes of vegium.
3. Calculate from experimental data the atomic mass of vegium.
A sample of vegium on a plastic cup small-scale balance
1. Weigh all the beans, all the peas, and all the corn.
2. count all the beans, all the peas, and all the corn.
3. Divide all the mass of each by the isotope (beans, peas, ...
Before An Earthquake Before an Earthquake
Check for dangers in the home:
· store breakable objects such as glass and china in low, and closed cabinets.
· repair any cracks in ceilings or foundations
· check electrical wiring and gas connections
· keep pesticides, weed killers, and other flammable in closed cabinets on the bottom shelves
Know where the safe spots are in every room:
· should be away from windows, mirrors, pictures, anywhere where glass could shatter, heavy bookcases, and heavy furniture
Make sure f...
Computer Ethics Computer Ethics
The computer is considered one of the most technological advances of the twentieth century. As the general public becomes increasingly ‘computer literate,' the gap between technology and peoples' intellect notably shrinks. The readily available computers, software, and assorted output devices have enlightened many but, in turn, have increased the using of computers for unethical activities, privacy invasion and illegal purposes. Legal sanctions against abusive use o...
Lou Gehrig Lou Gehrig
Lou Gehrig was born and raised in New York City, the son of German immigrant parents. His full name
was Henry Louis Gehrig. After graduating from high school, he attended Columbia University where he
became a football and baseball star. Lou's father directed him to becoming a pro baseball player. He
became sick and needed on operation, but there was no money for doctors and hospital expenses in the
family budget, so young Lou quickly capitalized on his baseball skills. He accept...
A Rite Of Passage A Rite of Passage
If you read the paper, peruse People magazine, or spend any time watching the
tabloid TV shows, you would have the strong impression that what Lorena Bobbitt did to
her husband, John Wayne Bobbitt, in the wee hours of June 23 in Manassas, Virginia, was
the equivalent of the shot heard ‘round the world.
You might think that Lorena Bobbitt single-handedly avenged the sexual crimes
that have been perpetrated against all women from the beginning of time.
There is no ...
Why Is There Gravity? Why Is There Gravity?
When you pick up a stone and release it falls to the ground. This seemingly simple concept has been known throughout history as gravitation. Isaac Newton managed to explain gravity in terms of its effects, but few have come up with a working explanation for the driving force behind it. The mysterious nature of some of the more peculiar effects of gravity, as well as the simple ones, indicate that explaining why there is gravity will be a long, difficult, yet intriguing ...
The Technology Needs Survey (TNS) software program developed at HSC/XRE was originally intended to
provide a convenient vehicle by which the office’s engineers and scientists could enter and edit
environmental, safety and occupational health (ESOH) needs data into a database. The program provided
an interface that allowed the user to answer, or revise answers, to questions regarding the nature of the
ESOH technology needs of the customer. The database was originally...
The Digestive Systems The Digestive Systems
The digestive systems works on nutrients taken from the environment, breaking them down into simpler
products, and then absorbing the products together with water and salts so they can be used in metabolism.
The individuals of all species contain many different protiens or carbohydrates in the cell walls of
bacteria, chitin in the external skeletons of arthropods, and so on and foreign proteins or carbohydrates are
rarely incorporated unchanged. They are usually first...
A new study has shown that chimpanzees may be able to determine whether their partners know they are in
danger. This suggests that these primates are able to decide how ignorant or informed their peers are about
an unexpected situation.
The finding, made by a team of researchers at Ohio State University's Comparative Cognition Project,
suggests that chimps share with humans the ability to perceive the knowledge state of a peer, and perhaps
the intention to protect that peer.
According to Mollet, cancer is the second leading cause of death in the United States. Estimates for 1982
indicate that 430,000 Americans will have died of some form of cancer. If national trends continue, some
fifty-three million Americans now alive will contract cancer sometime during their lifetime. Of this inverse
number, approximately one-half will die of cancer despite a medical effort to cure and prevent cancer
Although 45 percent of the detected cases o...