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HW#10: Igneous Rocks & Intrusive Activity

Instructions: Answer the questions below using one to five sentences.

 

1.  What is magma? How does magma differ from lava?

 

2. List and describe the three components of magma.

 

3.  Compare and contrast extrusive and intrusive igneous rocks.

 

4.  How do light-colored igneous rocks differ in composition from dark-colored igneous rocks?

 

5.  List the four basic compositional groups of igneous rocks, in order from the group with the highest silica content to the group with the lowest silica content.

 

6.  Name two minerals typically found in rocks with high silica content and two minerals found in rocks with relatively low silica content.