LUOA earth science module 2 Questions with Correct Answers (1)

LUOA earth science module 2 Questions with Correct Answers (1) Copper is generally used for - Answer-electrical wiring All rocks are made of - Answer-minerals We all use minerals every day. We brush our teeth with toothpaste containing made of . - Answer-calcite, talcum, copper Why is oil not a mineral? (Choose 2) - Answer-because it is a liquid, because it is made of living things All the following are characteristics of minerals except - Answer-random arrangement of atoms How many elements are found in most minerals? - Answer-6 Computers have the mineral in their motherboard. - Answer-silica Some minerals are made out of element(s), called element(s). - Answer-one, native Evaporated water can leave behind the mineral . - Answer-halite What are the two most abundant elements in the Earth's crust? - Answer-oxygen and silicon Using the Mohs hardness scale, give the hardness of the mineral that can only be scratched by a steel nail. (You may use your Moh's hardness Chart) - Answer-6 Which mineral has a streak that is different from the visible color? - Answer-pyrite Which formulas are correct? (You may have to rearrange the formula - select all that apply) - Answer-V = M/D , D = M/V , M = D x V volume In which test/characteristic would help you decide whether the surface is dull, waxy, or pearly? - Answer-luster The mineral galena breaks into tiny cubes. Why does this occur? - Answer-Its internal arrangement of atoms causes it to form a cube Which property is the most useful for identifying a mineral (one that is unlikely to change between specimens or types of minerals)? - Answer-streak test Answer-can be scratched with a drill bit, cannot be scratched with a penny easily, cannot be scratched with a steel knife easily What has a metallic luster and is 2.5 to 3 on the Mohs hardness scale? - Answer-galena Which mineral reacts to the acid test? - Answer-calcite Answer-luster What is cleavage? - Answer-how a mineral splits along a plane What type of rocks begin their cooling underground? - Answer-Pyroclastic rocks Magma that cools in between rock layers WITHOUT reaching the Earth's surface is increases as the sample of rock gets lighter in color Type of Magma/Lava Intrusive Extrusive Basaltic Gabbro Basalt, Scoria Andesitic Diorite Andesite Granitic Granite Rhyolite, Pumice, Obsidian