Answer the following questions. You will receive immediate feedback when you select your answer or when you click on the green check mark (). When you are finished, click the How Did I Do? button to see your score.

For questions 1 to 7, match the terms with the correct letter on the diagram.



  1. Abyssal Plain


  2. Continental Shelf


  3. Continental Slope


  4. Ocean Ridge


  5. Rift Valley


  6. Seamount


  7. Trench


  1. Which portion of the oceans is most often used by humans for both recreation and commercial activity?
  1. Describe abyssal plains.
  1. Which oceanic features are formed by volcanic activity?
  1. How are continental shelves similar to adjoining coastal areas?
  1. Where are oceanic trenches found?
  1. Compare oceanic canyons on the west and east coasts of the US; how are they different and how are they similar?
  1. How is beach sand formed?
  1. Where does about two-thirds of the earth's human population live?