PHSC 211 Chapter 7 Quiz (Fall 2020)– Liberty University (A grade)

6. Who proposed that all the present continents were once joined together in a single supercontinent called Pangaea? a. Alfred Wegener b. H. B. Baker c. Charles Darwin d. Arthur Holmes e. Harry Hess 7. The scientific community rejected the theory of continental drift because Alfred Wegener could NOT ________________. a. identify a mechanism to move the continents b. disprove competing theories that were not accepted by scientists c. find geologic similarities on the different continents d. all of the above e. None of the above 8. In the 1950s, Harry Hess interpreted this paleomagnetic data of newly formed oceanic crust. He proposed that while new oceanic crust was being formed at the summit of the oceanic ridges, the adjacent oceanic crust was moving laterally away from the ridge. What is this process called? a. Deep-sea trench b. Ocean crust c. Seafloor spreading d. Hot spots e. None of the above