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How can paleo-magnetism provide evidence of the movement of continents?

A very large volcanic crater is called a(n) ________________________.

The largest volcanoes are:

A mineral is defined as ___________________________________.

Plate Tectonic theory states that the Earth’s crust (Lithosphere) is ________________________?

The most common elements in the Earth=s crust are____________________.

The term luster refers to ______________________________.

The most common class of minerals in the earth=s crust are?

When minerals occur as a mixture in a rock rather than as a pure mineral what is the effect on the melting temperature?  How might this effect the composition of magmas?

Cleavage refers to ________________________