Chapter 2 Review: Digging into the Past

  1. Dinosaurs became extinct at the end of the ________ period 65 million years ago.
    1. Cretaceous <==== correct
    2. Jurassic (wrong)
    3. Triassic (wrong)
    4. Cambrian (wrong)
    5. Silurian (wrong)
      Hint
  2. Which of the following membranes of an egg provides a watertight fluid-filled environment for the embryo?
    1. amnion <==== correct
    2. yolk sac (wrong)
    3. allantois (wrong)
    4. chorion (wrong)
    5. oviduct (wrong)
      Hint
  3. Windblown eroded rock dust that can accumulate in thick deposits is called
    1. loess <==== correct
    2. erratic (wrong)
    3. esker (wrong)
    4. whisker (wrong)
    5. gravel (wrong)
      Hint
  4. The ice age glaciers finally melted from northern Illinois about ________ years ago.
    1. 100 (wrong)
    2. 10,000 <==== correct
    3. 65 million (wrong)
    4. 250 million (wrong)
    5. 3.5 billion (wrong)
      Hint
  5. The Asthenosphere is found in the ________ of the earth.
    1. core (wrong)
    2. nucleus (wrong)
    3. mantle <==== correct
    4. crust (wrong)
    5. atmosphere (wrong)
      Hint
  6. The limestone bedrock in North America was formed by calcium-rich skeletons of ________ and other marine life.
    1. dinosaurs (wrong)
    2. insects (wrong)
    3. crinoids <==== correct
    4. amphibians (wrong)
    5. fishes (wrong)
      Hint
  7. Humans may have migrated from Asia into North America via the
    1. Panama Canal (wrong)
    2. Silk Road (wrong)
    3. Pangaea supercontinent (wrong)
    4. Yucatan Peninsula (wrong)
    5. Bering Strait land bridge <==== correct
      Hint
  8. Pangaea was a
    1. supercontinent. <==== correct
    2. superocean. (wrong)
    3. South American continental plate. (wrong)
    4. Pacific ocean plate. (wrong)
    5. North American glacier. (wrong)
      Hint
  9. What happened at the end of the Permian period 250 million years ago?
    1. the supercontinent Pangaea began to form (wrong)
    2. 95% of marine species became extinct <==== correct
    3. the dinosaurs became extinct (wrong)
    4. humans evolved (wrong)
    5. the Ice Age ended (wrong)
      Hint
  10. Synapsids such as Dimetrodon evolved into
    1. amphibians (wrong)
    2. reptiles (wrong)
    3. birds (wrong)
    4. mammals <==== correct
    5. fish (wrong)
      Hint