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10/27/2009 12:09
Information
Our website now has our topics posted that we mentioned before. Information is taken from different sites and posted for your convenience. Links to the sites are below the topics. Enjoy our website and have a nice day.
Evidence of Continental Drifting
10/22/2009 21:15
Some of the evidence of Continental Drifting is:
The coasts of the continents surrounding the Atlantic ocean could, if the continents were moved closer, fit together like a jigsaw puzzle.
Animals in separated lands are similar. For example, India and Madacasar have similar mammals, which...
Seafloor Spreading Evidence
10/22/2009 20:58
Evidence of seafloor spreading is:
continental fit
rock sequences
glacial evidence
fossil evidence
polar wandering
Here is some evidence of seafloor spreading:
Trilobite
Also, geologists use radioactive dating...
Seafloor Spreading
10/22/2009 20:43
Seafloor spreading is when new oceanic crust is formed at mid-ridge as older crust moves away. It occurs at ocean ridges, where new crust is formed through volcanic activity and then slowly moves away from the ridge. Seafloor spreading helps explain continental drift in the theory of...
Folding and Faulting
10/22/2009 19:51
Folding is when when one or a stack of originally flat surfaces, such as sedimentary strata, are bent or curved as a result of deformation. In other words, when the Earth curves and bends a certain way to make a piece of land deform. Below is a result of folding:
A fault that runs...
Continental Drifting
10/22/2009 19:19
Continental Drifting is the movement of the Earth's continents relative to each other. An example would be below. Pangea. Pangea is the super-continent that split apart over billions of years. Because of continental drifting and plates splitting apart, the super-continent was no...
Valleys
10/22/2009 19:12
Divergent plate boundaries occur where two plates are moving apart from each other. This is the same thing with mountains but these divergent boundaries lift up. When plates break apart, the lithosphere thins and ruptures to form a divergent plate boundary. In the oceanic crust,...
Mountains
10/22/2009 18:55
Mountains have to do with plate tectonics because the formation of them are shaped by a divergent plate boundary seen below from pressure building up below the Earth causing land to split, break, fold, or fault. As seen below, the picture shows how the boundary causes land to drift upward and...
Volcanoes
10/22/2009 18:31
Volcanoes are an example of how plate tectonics work because most volcanoes occur along the edges of Earth's tectonic plates. This is how they are formed:
Volcanoes form when hot material from below rises and leaks into the crust.
The hot material, called magma, rising from...
Earthquakes
10/22/2009 17:58
An earthquake is a movement of the Earth's lithosphere that occurs when rock suddenly shift releasing stored energy. In simpler terms, (that only I would understand ha.) it mean that the Earth's rock plates inside of the Earth shift suddenly causing unwanted energy to let go. The...
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