Name:_______________

Igneous Rocks Pre Lab

August 29, 2003

1. How do igneous rocks form?

2. What is magma?

3. What is lava?

4. What is aphanitic texture?

5. What is phaneritic texture?

6. What is porphyritic texture?

7. How do vesicles form?

8. What are phenocrysts?

9. What is groundmass?

10. What is nucleation?