Class Copy

Igneous Rocks Test

  1. A rock is
    a. mostly made of minerals. c. an aggregate of one or more minerals.
    b. an conglomerate of one mineral. d. found only on the continents.
  2. Igneous rocks are classified by their
    a. color and streak. c. weight and melting point.
    b. texture and composition. d. temperature.
  3. Igneous rocks that cooled slowly underground
    a. have small crystals. c. have large crystals.
    b. have no crystals. d. are volcanic glass.
  4. Igneous rocks that cooled slowly underground
    a. are always light colored. c. are intrusive.
    b. are aphanitic. d. are extrusive.
  5. Igneous rocks that have mostly dark minerals
    a. may float in water. c. are found under oceans.
    b. are found on continents. d. are mostly silicate minerals.
  6. The color of an igneous rock reflects its
    a. mineral composition. c. cooling history.
    b. crystal size. d. lithification.
  7. The volcanoes closest to us are
    a. shield volcanoes. c. cinder cones.
    b. stratovolcanoes. d. caldera.
  8. If magma has a high silica and high water content then it is associated with
    a. low eruptive violence. c. lava.
    b. high eruptive violence. d. Pele the Hawaiian goddess of volcanoes.
    blank rock cycle
  9. Go to the igneous rock placement station.
  10. Label the missing parts of the rock cycle.
  11. On the back of your answer sheet describe the cooling history of a porphyritic rock.