Minerals and Rocks Practice Test

  1. Which of these is not true of a mineral?
    a. is composed of rocks. c. is an inorganic solid.
    b. has crystalline form. d. has specific chemical composition.
  2. Which of these properties would not be used to identify a mineral?
    a. smell. c. streak.
    b. surface tension. d. luster.
  3. A rock is
    a. an aggregate of one or more minerals. c. mostly made of minerals.
    b. an conglomerate of one mineral. d. found only on the continents.
  4. Rocks that cooled slowly underground
    a. have large crystals. c. have small crystals.
    b. have no crystals. d. are extrusive.
  5. Rocks that cooled slowly underground
    a. are intrusive. c. are exclusive.
    b. are aphanitic. d. are extrusive.
  6. Igneous rocks that have mostly dark minerals
    a. are found under oceans. c. may float in water.
    b. are found on continents. d. are mostly silicate minerals.
  7. The color of an igneous rock reflects its
    a. cooling history. c. mineral composition.
    b. crystal size. d. lithification.
  8. Igneous rock diagram correct placement _________
  9. An example of an oceanic volcano would be
    a. difficult to find. c. Mt. Rainier.
    b. Hawaii. d. the Bahamas.
  10. The two types of sedimentary rock are
    a. large and small crystal. c. high grade and low grade.
    b. caustic and chemical. d. clastic and chemical.
  11. Pick the correct order from largest to smallest rock fragment sizes:
    a. clay, silt, sand, gravel. c. gravel, sand, silt, clay.
    b. gravel, sand, clay, silt. d. sand, gravel, silt, clay.
  12. When a chemical comes out of a water solution due to vaporization or a chemical reaction we call this a(n)
    a. industrial accident. c. crystallization.
    b. chemical formula. d. chemical precipitate.
  13. Which is a correct listing of the steps for forming a sedimentary rock.
    a. weathering, erosion, deposition, fossilization. c. erosion, deposition, lithification.
    b. weathering, erosion, deposition and lithification. d. weathering, erosion, lithification.
  14. Acid rain from industrial air pollution would increase what sedimentary process?
    a. deposition. c. weathering.
    b. lithification. d. erosion.
  15. The two processes of lithification are
    a. compaction and cementing. c. compaction and secretion.
    b. mechanical and chemical weathering. d. deposition and sorting.
  16. The most likely place to find sedimentary rock forming is
    a. under Hawaii. c. on Mt. Baker.
    b. in red states. d. under the high school.
  17. The agents (forces) that cause metamorphism are
    a. heat, pressure and lithification. c. pressure and chemically-active fluids.
    b. heat and pressure. d. heat, pressure and chemically-active fluids.
  18. The least likely place to find metamorphic rock forming is
    a. under oceanic crust. c. under continents.
    b. in blue states. d. under the high school.
  19. Which of these is not a change that occurs during metamorphism
    a. new minerals forming. c. demineralization.
    b. recystalization of existing minerals. d. crystal orientation.
  20. The best rocks to look for fossils are
    a. igneous. c. sedimentary.
    b. metamorphic. d. mineralicous.
  21. Pick a rock sample in the room, measure and record this data:
    • number/letter _________________________
    • Mass _________________________
    • Volume ________________________
    • Density ________________________
  22. Draw the rock cycle.