Nuclear Weapons
.... of nuclear energy through the fission, or splitting, of
heavy atomic nuclei. The first atomic bomb was tested by the United States
near Alamogordo, New Mexico. In the final stages of World War II, the U.S.
dropped atomic bombs on Hiroshima and on Nagasaki three days later to force
Japan to surrender. The explosion produces great amounts of heat, a shock
wave, and intense neutron and gamma radiation. The region of the explosion
becomes radioactively contaminated, and wind-borne radioactive products may .....
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Hail
.... The largest stone previously on record
was almost the same size. It was found in Potter, Nebraska on July 6, 1928.
The hailstone had a circumference of 17 inches and weighed 1.51 pounds
(Dennis 54).
Hail can be extremely dangerous. It can break windows, damage
roofs, dent cars, injure and even kill people! Crops are greatly affected.
Hail causes around two hundred million dollars in damage a year. That's a
lot of money. When the wind is blowing hailstones are at their worst.
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How Earthquakes Are Caused
.... material from the mantle
seeps up between the converging plates. The gap is closed as the plates
move more into each other, locking the molten material in. This, by the way,
happens at all of the convergent boundaries. After much time, pressure
builds up as the molten material churns in its chamber. It gets hotter, and
as we know from the laws of physics, heat rises due to its kinetic energy.
So, as the pressure get to be too much, the molten material goes up.
As you may already know, molten material mos .....
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Oxygen
.... increasing
in size annually. Paradoxically, ozone is toxic! Undiluted ozone is bluish
in colour. Liquid ozone is bluish-black, and solid ozone is violet-black.
Oxygen is very reactive and capable of combining with most elements.
It is essential for respiration of all plants and animals and for
practically all combustion.
history of oxygen
Leonardo da Vinci suggested that air consists of at least two
different gases. Before then, air was felt to be an element in its own
right. He was al .....
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Rabbits
.... white during the winter months. During the
spring, as the snow melts, the hare grows a new coat of brown fur. Another
hare that changes color is commonly called the snowshoe rabbit. The hare
has strong hind legs that enable it to hop 43 miles per hour (69 km/h), as
fast as a race horse. Lagomorphs must be able to hop about quickly to
escape from predators. Another lagomorph, the pika, dwells among the craggy
mountain slopes of Asia and North America. In late summer the little pika
might be seen guarding .....
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Biology
.... prothallus which is the
gametophyte generation. The antheridia and the archegonia are developed on the
bottom of the prothallus. The archegonia are at the notch of the prothallus and
the antheridia are located near the tip. Fertilization occurs when outside
moisture is present and the sperm from the antheridia swim to the eggs of the
archegonia. A zygote is formed on the prothallus and a new sporophyte grows.
4. Flowering plants have unique characteristics that help them survive.
One is the flower .....
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The African Penguin
.... off the coast of Namibia to Bird Island
in Algoa Bay.
At one time the population of the African Penguin was quite large
but some man caused factors has drastically reduced their species. A long
time ago the early European settlers at the Cape of Good Hope realized that
penguin eggs were good for eating and over the years millions of penguin
eggs have been collected greatly reducing the population of the African
penguin species, and even to make things worse they started the practice of
destro .....
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Nature Vs. Nurture
.... women
described themselves as relatively nontraditional. Those led to think he
favored traditional gender roles described themselves as more traditionally
feminine” (Handout - Diversity and Community).
I believe that one's immediate family, rather than society, has a
greater influence on gender roles. For example, girls who group up without
a mother or older sisters tend to be less feminine because all they have
are male role models. Another example of how the family influences gender
roles is whe .....
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Nuclear Power
.... power.
Dr. Gofman seems to have many confusing ideas about the concept of
nuclear power. First of all he shoots down the government for giving money
to nuclear industries and claims that doing this is "totally inappropriate
for government." I don't know if Dr. Gofman understands that we are kind of
running out of energy sources, and until we better develop things like
solar power to make them more useful and economical, we may need energy
sources like nuclear power in the very near future. Next he trie .....
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Asteroid Defense
.... system, I think that
our government should look into constructing one. When one thinks about what an
asteroid could do to our planet it is usually a very scary thought. In the past
we have been very lucky with where asteroids have hit our earth. Back in 1908
in the Tunguska region of Siberia, an object from space hit there causing miles
of forest to be devastated. If that same object had hit New York, it would have
probably been like a 20 megaton bomb going off in Times Square. That would have
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The Giant Anteater
.... of their mouths up to 150 times per minute (Schupska 1). The giant
anteaters lives on the ground. It walks with its front feet turned on the
sides to protect its claws, which the animal uses to rip open ant nest
before eating. Then it flits its long tongue and literally licks up the
ants. The anteater precedes to rip oben a termite or ant hill with its
clawed hand and work its tubular snout down into the heart of the colony,
trapping the insects on its tongue's sticky coating (Encarta ‘98). The
ante .....
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Comets And Asteroids
.... the earth, and they are actually
called, "near-earth" asteroids. About 10 percent are bound to hit earth
eventually.
Asteroids ranging from fine dust, to house size rocks make up the
belt around Saturn, and the belt on the outside of the orbit of Mars.
These are pieces of larger rocks that were crashed into the remaining
pieces after millions of years of crashes.
Each ring system has distinctive features. Jupiter's rings are
tenuous and made mainly of dark particles the size of those in cigarette
sm .....
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Devastation Of The Rain Forests
.... to playing a game
of Russian Roulette. One-forth of existing medicines comes from tropical
plants whose homes are in the rainforests of South America. For every acre
that is lost in the burning season, there is one acre less that we have for
possible life saving medicines. About 70 percent of plants used in anti-
cancer drug come are the rain forest. We are slowly destroying the
environment and ourselves. Whether we realize it or not, the world could
quickly come to an ecological stop. Every day 1 .....
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The Destruction Of The Ozone Layer
.... the ozone reacts
with a chloride ion from chlorine monoxide, the ozone molecule is destroyed.
So chlorine monoxide is an ozone destroyer. There is always a certain
amount of chlorine monoxide in the atmosphere.
It is important to remember that ozone is constantly being created and
destroyed in the atmosphere. The amount of ozone in the atmosphere is based
on these reactions. There are many factors that influence the amount of
reactions like season, latitude, and solar cycle. Because of these factors
ozo .....
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Thoughts On Acid Rain
.... have large impact on the growth or the preservation of certain
wildlife.
NO DEFENSE
Areas in Ontario mainly southern regions that are near the Great
Lakes, such substances as limestone or other known antacids can neutralize
acids entering the body of water thereby protecting it. However, large
areas of Ontario that are near the Pre-Cambrian Shield, with quartzite or
granite based geology and little top soil, there is not enough buffering
capacity to neutralize even small amounts of acid falling .....
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