Land form Pattern and Processes

2. List the zones of the earth. For each zone state the thickness, and two features of each.

(A) Inner Core: 2700 km, solid and made mostly of iron with lesser amounts of nickle.

(B) Outer Core: 2300 km, molten and made mostly of iron and nickle

(C) Mantle: 2900 km, divided into lower and upper levels, the asthenosphere is in plastic state, sometimes acting like a liquid

(D) Mohorovicic Discontinuity: -------, Boundary between mantle and lithosphere, at which earthquake waves abruptly change speeds.

(E) Lithosphere 1-100 km, lowest density, solid and rigid, and can be divided into layers one under the ocean basins and one making up continents.

3. (A) What are the two main materials that make up the lithosphere?

The two main materials that make up the earths lithosphere are aluminum and magnesium.

Minerals are the combination of elements.

3. (C) What are the two most common elements in minerals?

The two most common elements in minerals are oxygen and silicon.

4. What is the difference between igneous and sedimentary rock?

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Some common words found in the essay are:
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Approximate Word count = 1164
Approximate Pages = 5 (250 words per page double spaced)