Tuesday, April 7, 2009

Convergent and Divergent Boundaries

Convergent and Divergent boundaries are boundaries that make different land forms such as mountains. Convergent boundaries are where two plates crash into each other. Plates move extremely slow so when plates are converging, they get slightly higher each year until a tall mountain is formed. While a mountain is being formed, the oceanic plate gets bent down. Divergent boundaries are where two plates separate. After the plates crack and separate, a block comes from underneath and the block has a hole filled with magma. The block sinks causing a central valley called a rift. Magma makes its way up to the Earth's floor and creates new land. This block filled with magma is called a volcano. From divergent bundaries, faults are formed from the spreading. Along the faults earthquakes occur very often. The constant movement of these boundaries often cause earthquakes and volcanoes.

The image “http://www.scarborough.k12.me.us/wis/teachers/dtewhey/webquest/nature/images/convergent_boundaries.gif” cannot be displayed, because it contains errors.

This is a picture of a convergent boundary.

The image “http://www.scarborough.k12.me.us/wis/teachers/dtewhey/webquest/nature/images/Divergent_boundaries.gif” cannot be displayed, because it contains errors.

This is a picture of a divergent boundary.


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