1. What are the three major classes of rocks?

2. What is molten rock material called?

3. What do we call rocks which have formed from the cooling and solidification of molten material?

4. What do we call magma that reaches the surface of the Earth still molten (that is, erupts out of a volcanic vent)?

5. Is lava extrusive igneous rock or intrusive igneous rock?

6. Magma which cools and solidifies below the Earth’s surface is called plutonic rock. Is plutonic rock extrusive igneous rock or intrusive igneous rock?