1. What Mineral Property Is the Least Reliable When Identifying Minerals?

Quarter 2 Geology Review

Minerals

1. What mineral property is the least reliable when identifying minerals?

2. What is luster?

3. What is streak?

4. How are cleavage and fracture different?

5. What is hardness?

6. What’s the hardness of the following testing materials:

Fingernail _____ Copper_____ Glass_____ Steel_____

Use the table for questions 7-9.

Mineral Name Hardness Color Streak Luster Breakage 11. Sphalerite 3.5-4 Yellow, Brown, Black Yellow, light brown Brilliant, resinous Cleavage, 6 sided 21. Malachite 3.5-4 Green Light Green Earthly / Dull Uneven 13. Sulphur 1.5-2.5 Yellow Yellow Earthy / resinous Uneven, poor cleavage 27. Azurite 3.5-4 Blue Light Blue Earthy to Dull Uneven 15. Limonite 4-5.5 Yellow, Brown, Reddish Brown Yellow to Brown Earthy, Dull Uneven 1. Calcite 3 White / clear White Glassy Cleavage 3 directions not 90⁰

7. You observe a mineral yellow/ brown mineral that has 6 sided cleavage. What mineral on the chart could it be?

8. What is the hardest mineral on the chart?

9. Which of the minerals on the chart would scratch glass?

10. What is a naturally occurring crystalline solid with a definite chemical composition?

Igneous Rocks 11. Igneous rocks are rocks made from what?

12. Coarse grained igneous rocks have what size crystals?

13. Fined grained igneous rocks have what size crystals?

14. Glassy igneous rocks have what size crystals?

15. Texture of igneous rocks is related to what?

16. Mafic rocks tend to be what color?

17. Felsic rocks tend to be what color?

18. Intrusive rocks have large crystals, so they must have cooled? (Quickly or Slowly)

19. Extrusive rocks have small or microscopic crystals, so they must have cooled? (Quickly or Slowly)

20. What is the difference between magma and lava?

Plate Tectonics

21. Name the layers of the earth.

22. Which layers are made of rock? Solid metal? Liquid metal?

23. What layer is a semi-solid or rock paste? 24. What’s the difference between the lithosphere and asthenosphere?

25. Why do plates move?

26. How do plates move at divergent boundaries? Convergent? Transform?

27. What landforms are created by plate motion?

28. What is subduction?

29. What is a fault?

30. What is an earthquake?

31. What do scientists use to figure out what the layers of the earth are made of?

32. How does magma type affect how dangerous a volcano is?

33. How does magma type affect the shape of a volcano?

34. Most dangerous volcano: Least dangerous: