+ 1-888-787-5890  
   + 1-302-351-4405  
 
 
 
 

Essay/Term paper: The dust-cloud hypothesis

Essay, term paper, research paper:  Science

Free essays available online are good but they will not follow the guidelines of your particular writing assignment. If you need a custom term paper on Science: The Dust-Cloud Hypothesis, you can hire a professional writer here to write you a high quality authentic essay. While free essays can be traced by Turnitin (plagiarism detection program), our custom written essays will pass any plagiarism test. Our writing service will save you time and grade.

The
universe contains huge clouds made up of very
large amounts of dust and gas. About
6,000,000,000 (billion) years ago, one of these
clouds began to condense. Gravitation--the pull
that all objects in the universe have for one
another--pulled the gas and dust particles
together. As the dust cloud condensed, it began to
spin. It spun faster and faster and flattened as it
spun. It became shaped like a pancake that is
thick at the centre and thin at the edges. The
slowly spinning centre condensed to make the sun.
But the outer parts of the pancake, or disk, were
spinning too fast to condense in one piece. They
broke up into smaller swirls, or eddies, which
condensed separately to make the planets. The
forming sun and planets were made up mostly of
gas. They contained much more gas than dust. The
earth was far bigger than it is now and probably
weighed 500 times as much. The large body of
dust and gas forming the sun collapsed rapidly to a
much smaller size. The pressure that resulted from
the collapse caused the sun to become very hot
and to glow brightly. The newly born sun began to
heat up the swirling eddy of gas and dust that was
to become the earth. The gas expanded, and some
of it flowed away into space. The dust that
remained behind then collected together because
of gravity. Although the shrinking earth generated
a lot of heat, most of this heat was lost into space.
Therefore, the original earth was most likely solid,
not molten. This hypothesis was developed by a
scientest, Harold C. Urey in 1952. It is also
known as the Urey's hypothesis. He showed that
methane, ammonia, and water are the stable forms
of carbon, nitrogen, and oxygen if an excess of
hydrogen is present. Cosmic dust clouds, from
which the earth formed, contained a great excess
of hydrogen.  

Other sample model essays:

Biology / The Earth
Did u know that our planet, Earth wasn"t always thought of as a planet? Until the sixteenth century when Capernicus figured out that the Earth was another planet, which revolved around the sun, Greek...
Biology / The Ebola Virus
Life is a biological internet in which viruses travel like messages, moving at high speed from node to node and from city to city. They are diverse and wild spread in every plane on the surface of...
Changes in altitude have a profound effect on the human body. The body attempts to maintain a state of homeostasis or balance to ensure the optimal operating environment for its complex chem...
The Enhanced Greenhouse Effect For the past ten thousand years the earth"s climate has been extremely good and beneficial to mankind. Today however , major changes are taking place. Humans being...
Science / The Giant Clam
The giant clam is known as a reef dwelling mollusk. The domestication factor has become of large importance to the Indo-Pacific peoples. Mainly in the area of their diet. These huge clams...
Finding good day care can certainly pose a problem these days, unless, of course, you're an African widow bird. When it comes time for a female widow bird to lay her eggs, she simply locates the n...
The greenhouse effect occurs when gases such as methane, carbon dioxide, nitrogen oxide and CFCs trap heat in the atmosphere by acting as a pane of glass in a car. ³The glass² ...
The theory of being able to make a genetic copy (a clone) of another animal has been around for quite a while. In this section as the title reads I will show the history of cloning. 400 million ye...
Biology / The Human Brain
The Human Brain Through the use of molecular biology it is thought that the hominidae family first appeared about 5 million years ago. Based on this time frame it is believed that an African Ho...
Human visual hardware is a result of a billion years of evolution within the earths atmosphere where light is scattered by molecules of air, moisture, particular matter etc. However as we ascend in...
Experience with Dream Essay - Reliable and great customer service. Quality of work - High quality of work.
, ,
Dream Essay - Very reliable and great customer service. Encourage other to try their service. Writer 91463 - Provided a well written Annotated Bibliography with great deal of detail per th
, ,
it is always perfect
, ,
The experience with Dream Essay is stress free. Service is excellent and forms various forms of communication all help with customer service. Dream Essay is customer oriented. Writer 17663
, ,
Only competent & proven writers
Original writing — no plagiarism
Our papers are never resold or reused, period
Satisfaction guarantee — free unlimited revisions
Client-friendly money back guarantee
Total confidentiality & privacy
Guaranteed deadlines
Live Chat & 24/7 customer support
All academic and professional subjects
All difficulty levels
12pt Times New Roman font, double spaced, 1 inch margins
The fastest turnaround in the industry
Fully documented research — free bibliography guaranteed
Fax (additional info): 866-332-0244
Fax (additional info): 866-308-7123
Live Chat Support
Need order related assistance?—Click here to submit a inquiry
© Dreamessays.com. All Rights Reserved.
Dreamessays.com is the property of MEDIATECH LTD