Regents Earth Science Unit Three: Minerals And Rocks

The Frederick Douglass Academy Name:______Earth Science/Mr. Valeiras/Pd.___ Date:______Class:______

Review Packet 3 Standard 3.1a - Sediments of inorganic and organic origin often accumulate in depositional environments. Sedimentary rocks form when sediments are compacted and/or cemented after burial or as the result of chemical precipitation from seawater.

1. What is fracture? What is cleavage?

2. Which is shown in this picture?

3. What inside of minerals makes them split along flat surfaces? (1) Their hardness (3) Their density (2) The large amount of iron (4) The arrangement of their particles/atoms

4. Compare the two different types of mica. How are they similar? How are they different?

5. What is streak? How do you test it?

6. What mineral has a green-black streak?

7. How do you test hardness?

8. You have three minerals, A, B, and C. A has a hardness of 1, B has a hardness of 4, and C has a hardness of 7. Will B scratch A but not C? Why or why not?

9. Why do we conduct all these different tests on a mineral? What do they tell us?

10. What is the chemical formula for (a) Quartz? ______(b) Pyrite? ______(c) Fluorite? ______(d) Calcite? ______

Standard 2.1w - Minerals have physical properties determined by their chemical composition and crystal structure. 11. How are sedimentary rocks formed?

12. What sedimentary rock has a particle size of less than 0.0004 cm?

13. What sedimentary rock has of 0.09 cm in diameter? The Frederick Douglass Academy Name:______Earth Science/Mr. Valeiras/Pd.___ Date:______Class:______

14. A rock is formed by pouring sand into a cup of water and letting the water evaporate. What type of rock have you made?

13. Shale is made of clay that contains quartz and feldspar and Coal is made of Carbon. (a)What is sandstone made of? ______(b) What is limestone made of? ______(c) What is rock salt made of? ______(d) What is siltstone made of? ______

Standard 3.1b - Minerals are formed inorganically by the process of crystallization as a result of specific environmental conditions.

14. How is pumice formed?

15. On what basis are rocks classified?

16. A rock with wavy bands of dark and light is what type of rock? How was it formed?

17. Describe Obsidian’s texture (it was the shiny black rock from class). How was it formed?

18. What process changes magma into solid rock?

19. Contrast the cooling rate and grain size of extrusive and intrusive igneous rocks.

Standard 3.1c - Rocks are usually composed of one or more minerals.

20. What rock would be formed from evaporated sea water?

21. What nonfoliated rocks could be formed by either regional or contact metamorphism?

22. What sedimentary rock was slate before it had heat and pressure applied?

23. What rocks are made of minerals that react (bubble) with acid?

24. What minerals is Diorite composed of?

25. Which metamorphic rocks show mineral alignment? The Frederick Douglass Academy Name:______Earth Science/Mr. Valeiras/Pd.___ Date:______Class:______26. Which metamorphic rocks show banding?

27. What is one example of a clastic sedimentary rock?

CHALLENGE: What igneous rocks could be made of pyroxene, plagioclase feldspar, olivine, and amphibole?