<p>The Frederick Douglass Academy Name:______Earth Science/Mr. Valeiras/Pd.___ Date:______Class:______</p><p>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.</p><p>1. What is fracture? What is cleavage?</p><p>2. Which is shown in this picture?</p><p>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</p><p>4. Compare the two different types of mica. How are they similar? How are they different?</p><p>5. What is streak? How do you test it?</p><p>6. What mineral has a green-black streak?</p><p>7. How do you test hardness?</p><p>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?</p><p>9. Why do we conduct all these different tests on a mineral? What do they tell us?</p><p>10. What is the chemical formula for (a) Quartz? ______(b) Pyrite? ______(c) Fluorite? ______(d) Calcite? ______</p><p>Standard 2.1w - Minerals have physical properties determined by their chemical composition and crystal structure. 11. How are sedimentary rocks formed?</p><p>12. What sedimentary rock has a particle size of less than 0.0004 cm?</p><p>13. What sedimentary rock has of 0.09 cm in diameter? The Frederick Douglass Academy Name:______Earth Science/Mr. Valeiras/Pd.___ Date:______Class:______</p><p>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?</p><p>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? ______</p><p>Standard 3.1b - Minerals are formed inorganically by the process of crystallization as a result of specific environmental conditions.</p><p>14. How is pumice formed?</p><p>15. On what basis are rocks classified?</p><p>16. A rock with wavy bands of dark and light is what type of rock? How was it formed?</p><p>17. Describe Obsidian’s texture (it was the shiny black rock from class). How was it formed?</p><p>18. What process changes magma into solid rock?</p><p>19. Contrast the cooling rate and grain size of extrusive and intrusive igneous rocks.</p><p>Standard 3.1c - Rocks are usually composed of one or more minerals.</p><p>20. What rock would be formed from evaporated sea water?</p><p>21. What nonfoliated rocks could be formed by either regional or contact metamorphism?</p><p>22. What sedimentary rock was slate before it had heat and pressure applied?</p><p>23. What rocks are made of minerals that react (bubble) with acid?</p><p>24. What minerals is Diorite composed of?</p><p>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?</p><p>27. What is one example of a clastic sedimentary rock?</p><p>CHALLENGE: What igneous rocks could be made of pyroxene, plagioclase feldspar, olivine, and amphibole?</p>