Earth Science 11 - Fall 2000 Assignment 7: Earth Materials

1. How are minerals usully identified in fieldwork?

2. Why is it difficult to identify a mineral by its color alone?

3. What is luster?

4. Why is crystal shape not especially important in field identification?

5. Explain what a mineral streak is?

6. Explain what is meant by the cleavage of a mineral?

7. What is mineral fracture?

8. Explain what hardness is.

9. What is specific gravity?

10. Describe magnetite.

11. Distinguish between magnetite and lodestone.

12. Describe pyrite.

13. Define the three families of rocks.

14. What are extrusive rocks?

15. What are intrusive rocks?

16. Explain how sediments form rocks.

17. What is stratification?

18. What are fossils?

19. What is a concretion?

20. Describe the rock cycle briefly in words or by a simple diagram.