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» Science Essays and Papers
Dvd Vs. Vcr
<view this essay>.... the cost of movies and maintenance. A second consideration of consumers when choosing between VCR and DVD should be the video and audio quality. Various technical factors can alter the quality of both picture and sound in both of these systems, making picture and audio quality a major consideration when shopping for home entertainment components.A final consideration that consumers should give special attention is the accessibility of the systems. In today’s growing entertainment market, the difficulty in accessing video and DVD movies can play a large part in the decision of which component is right for the consumer.METHODSThe beginning of any research projec .....
Number of words: 2115 | Number of pages: 8 |
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Types Of Land Features
<view this essay>.... back their leaves from the fall. In the summer, the temperatures reach their highest. In the fall, trees shed their leaves and the temperature begins to cool.
The deciduous forest consists of the most variety of plant species than any other biome. The forests are layered by the canopy, understory, shrub layer, and herbal layer. Trees can grow up to 3-5 feet in diameter and 80-100 feet tall.
Animal life is abundant. There are fewer large animals but an absorbent amount of smaller animals. Animals such as raccoons, skunks, foxes, voles, and mice are very common in the deciduous forests. Amphibians are just as common such as frogs, toads, and sal .....
Number of words: 2108 | Number of pages: 8 |
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Indicactor Lab
<view this essay>.... and the pH value was 6, a weak acid. The appearance of this substance was a thick, white liquid that had a horrible odor. These observations led me to my conclusion that substance B is spoiled milk.
Test-tube C: Test-tube C had ammonia in it. The substance reacted to red litmus paper, and it had no effect on blue litmus paper. Phenolphthalein turned a hot pink color very quickly, and the pH value was about 11.5. The substance was clear and had a strong odor to it. These results led me to my conclusion that substance C is ammonia.
Test-tube D: Test-tube D contained lemonade. The substance reacted to blue litmus paper, and red litmus underwent no changes. It .....
Number of words: 430 | Number of pages: 2 |
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Astronomy And Space Science: Your Bones In Space
<view this essay>.... which provides the
vertebrates its rigid infrastructure. It consists of specialized
connective tissue cells called osteocytes and a matrix consisting of
organic fibers held together by an organic cement which gives bone its
tenacity, elasticity and its resilience. It also has an inorganic
component located in the cement between the fibers consisting of calcium
phosphate [85%]; Calcium carbonate [10%] ; others [5%] which give it the
hardness and rigidity. Other than providing the rigid infrastructure, it
protects vital organs like the brain], serves as a complex lever system,
acts as a storage area for calcium which is vital for human metabolism,
houses .....
Number of words: 1408 | Number of pages: 6 |
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My Theory Of The Universe
<view this essay>.... and then works its way back. (Phases of the
Moon) There are many spots on the walls of the room that are just reflections
off of the disco ball. (Stars) These spots seem to form different patterns on
the walls and move along with the disco ball, but not always at the same rate.
(Constellations) There are two very shy people in the room that sometimes leave
the room. When they are in the room they stand by the walls and always wink for
some reason, so all we can see of them is one of their eyes. (Mercury & Venus)
Then there are three very weird people in the room that are always in the middle
of the room doing the Waltz. They do this some how by thems .....
Number of words: 553 | Number of pages: 3 |
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Tundra And The Artic
<view this essay>.... north and encompasses the Arctic circle as well as most of the western
Northwest Territories. Generally though since climate more or less corresponds
to vegetation zones, the Tundra is located in Arctic climate areas.
Temperature
The Tundra suffers a very harsh climate. Because of this fact most of the area
remains barren save for a few shrubs and lichens. It's winters last from 8-10
months and the summers are cool and short. Also due to the fact that much of
it's territory is located within the northern pole a lot of the Tundra receives
alternating 6 month periods of light and dark. This is also the reason why the
Tundra receives cold weather; at it's degree .....
Number of words: 1345 | Number of pages: 5 |
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Evolution
<view this essay>.... 1) the principle of use and disuse and, 2) the inheritance of acquired characteristics. The principle of use and disuse states that if an animal frequently uses an organ then that organ will grow in strength, and if an animal does not use an organ it deteriorates until it eventually disappears (Strickberger 22). The inheritance of acquired characteristics states that the changes that occur in animals through the principle of use and disuse are passed on to the animal's offspring (Strickberger 23). Lamarck's theory on was proven false because it incorrectly asserts that organisms can change their inheritable traits. This assertion was shown to be untrue .....
Number of words: 874 | Number of pages: 4 |
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Lasers 2
<view this essay>.... as different colors. Like radio waves, light can also carry information. The information in the beam varies in the frequency or shape of the light wave. Because light waves are of much higher
frequencies than radio waves, the have a higher information carrying capacity. In beams of light,individual photon waves are not moving along together because they are not being emitted at the same instant but instead in random short bursts. Such beams are called incoherent.
The process for laser action, was first proposed by Albert Einstein in 1917. The working principles of lasers were outlined by the American physicists Arthur Leonard Schawlow and Charles Hard To .....
Number of words: 1125 | Number of pages: 5 |
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