... an opportunity to express their personal independence; an opportunity seldom available under a master's supervision. As the true authority on plantations, the solar cycle of the sun subverted the chain of command amongst master and slave by controlling the daily lives of both - ultimately shaping the history of ... high overhead, beating its rays down on the plantation. Harvest season meant two things for the crops - crops would reach their ripening peak and that they had to be harvested before the sun's vigor gave way to winter. Masters were pressured by this environmental factor, ... gr...

• Word Count: 1485
• Approx Pages: 6
• Grade Level: Undergraduate

... these effects. One of the most important, yet least known of these effects is called the sunspot cycle. It has been proven that the sun undergoes an eleven year cycle of sunspots which can greatly affect the temperatures on this planet. At the peak of this cycle, when the sunspots are most numerous their have been corresponding surges in temperature, and the opposite is ... shown when the number of sunspots is lowest. For example, between 1645 and 175, a period astronomers call the Maunder Minimum (Calder), the sunspot cycle stopped. Their were almost no sunspots for seventy years ... ....

• Word Count: 1407
• Approx Pages: 6
• Has Bibliography
• Grade Level: High School

... a giant cloud of gas and dust, called a nebula. The mass of the star is determined by how much matter is available in its nebula. With more mass, comes a shorter life cycle. Through time, hydrogen gas is pulled together and eventually begins to spin. As the spinning gradually increases, the heat of the hydrogen rises in temperature. When 15,000,000 degrees ... exceeded, a nuclear fusion will occur and the substance will begin to glow brightly (Spritzer 128). This is now called a main sequence star. This is the central phase of the life cycle. An average star will expand as it runs out o...

• Word Count: 1102
• Approx Pages: 4
• Has Bibliography

... , shows how magnificent the bird thinks he is: as if he is the reason creation exists. This is interesting because it twists the traditional anthropocentric world view (i.e. humans are the peak of creation, the whole point of it all), that is set down in Genesis. When he flies up he says he will 'revolve' the world slowly - as if he ... is direct`), meaning that it is destined and has a right to kill. From this aspect, the last line of the poem would make sense, as nature will continue on this cycle of violence and predation. Ted Hughes shows us his admiration for the natural world ...

• Word Count: 1635
• Approx Pages: 7
• Grade Level: High School

... CFCs reach the stratosphere, the sun's ultraviolet radiation cause them to break apart. Therefore, the chlorine atoms inside the CFCs are released and will react with ozone, starting a chemical destruction cycle of ozone. To show the extent of destruction chlorine can produce, one chlorine atom can break apart more than 100,000 molecules of ozone. Chlorofluorocarbons are not naturally produced chemical ... by 15%. Scientists feel through the years 1998-2000 to be the most vulnerable period when accumalated atmospheric chlorine and bromine levels from human made elements will be at it's ...

• Word Count: 2176
• Approx Pages: 9
• Has Bibliography
• Grade Level: Undergraduate

... technology because of its closeness to the sun. Mercury's surface is similar to the moon and there is no signs of clouds, rivers, dust storms or other evidence of a weather cycle. Mercury has many craters, but it has very little lava flow regions, which we call scarp. The prominent feature on the surface is the Caloris Basin. Mercury does not have ... appears to be smooth with rolling plains and some high and low land features. It has two continental size features that are called, Ishtar Terra and Aphrodite Terra. The highest peak of Venus is 14 km above the lowest depression or its sur...

• Word Count: 3183
• Approx Pages: 13
• Grade Level: High School

... CFCs reach the stratosphere, the sun's ultraviolet radiation cause them to break apart. Therefore, the chlorine atoms inside the CFCs are released and will react with ozone, starting a chemical destruction cycle of ozone. To show the extent of destruction chlorine can produce, one chlorine atom can break apart more than 100,000 molecules of ozone. Chlorofluorocarbons are not naturally produced chemical ... by 15%. Scientists feel through the years 1998-2000 to be the most vulnerable period when accumalated atmospheric chlorine and bromine levels from human made elements will be at it's ...

• Word Count: 2237
• Approx Pages: 9
• Has Bibliography
• Grade Level: Undergraduate

... the production of CFCs in 1996 in the developed countries. The measures that had taken part have helped the ozone layer. Researchers believe the atomic chlorine levels will reach their peak soon and in the next 50 years the ozone layer should be able to rebuild itself. Health Ozone depletion also causes major health problems because of the effects that the ... years but most are destroyed sooner than that. With there long lifetime, they can do a lot of damage destroying ozone molecules for a long time. CFC's have altered the natural ozone cycle in the stratosphere. They destroy the ozon...

• Word Count: 1635
• Approx Pages: 7
• Has Bibliography
• Grade Level: High School