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Quizzes Quiz

Practice Test
  1.What is the easiest way to tell if a sample is gold or pyrite?  
  a.   hardness  
  b.   luster  
  c.   appearance  
  d.   streak  
  2.Amethyst is a variation of which mineral?  
  a.   quartz  
  b.   garnet  
  c.   diamond  
  d.   topaz  
  3.__________ is a solid in which the atoms are arranged in closely repeating patterns.  
  a.   A crystal  
  b.   An element  
  c.   A mineral  
  d.   An ore  
  4.Which is an industrial use of diamonds?  
  a.   in lasers  
  b.   in jewelry  
  c.   in watches  
  d.   as cutting tools  
  5.Titanium is useful because it has __________.  
  a.   a low Mohs number  
  b.   a high density and low durability  
  c.   a low density and high durability  
  d.   a colorless streak  
  6.Common physical properties of minerals include all of the following except __________.  
  a.   specific gravity  
  b.   flammability  
  c.   appearance  
  d.   hardness  
  7.Glass is not a crystal because __________.  
  a.   it is not crystalline  
  b.   it fractures  
  c.   it is transparent  
  d.   it is a solid  
  8.You find a red gemstone that is from Sri Lanka. What gem is this most likely?  
  a.   ruby spinel  
  b.   sapphire  
  c.   emerald  
  d.   topaz  
  9.Metallic elements dissolved in fluids form in __________.  
  a.   ores  
  b.   veins  
  c.   ponds  
  d.   magma  
  10.Which is an example of a mineral with a nonmetallic luster?  
  a.   pyrite  
  b.   gold  
  c.   graphite  
  d.   quartz  
  11.Streak measures the color of a mineral's __________.  
  a.   surface  
  b.   crystals  
  c.   powder  
  d.   atoms  
  12.The Hope diamond, which is now at the Smithsonian, is said to __________.  
  a.   bring its owner good fortune  
  b.   be one of the smallest diamonds in the world  
  c.   bring its owner bad luck  
  d.   be an impure diamond  
  13.The specific gravity of a mineral compares its weight with an equal volume of __________.  
  a.   air  
  b.   rock  
  c.   water  
  d.   diamond  
  14.All minerals are __________.  
  a.   unordered  
  b.   organic solids  
  c.   naturally occurring  
  d.   made in a lab  
  15.The hardest mineral, with a 10 on the Mohs scale, is __________.  
  a.   quartz  
  b.   diamond  
  c.   iron  
  d.   talc  
  16.Some gems have __________.  
  a.   a low Mohs number  
  b.   a crystalline structure  
  c.   no color  
  d.   fracture  
  17.An inorganic crystalline solid is formed in a lab. Why is it not a mineral?  
  a.   It is a solid.  
  b.   It is a crystal.  
  c.   It is inorganic.  
  d.   It is not naturally occurring.  
  18.A mineral that is hard __________.  
  a.   will not break  
  b.   can be scratched with your fingernail  
  c.   is hard to scratch  
  d.   will not shatter  
  19.Large crystals can form when magma __________.  
  a.   melts  
  b.   cools slowly  
  c.   cools quickly  
  d.   erupts from a volcano  
  20.Where do most useful minerals occur in nature?  
  a.   in seawater  
  b.   in freshwater  
  c.   in volcanoes  
  d.   in ores  

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