Deep-ocean trenches are the deepest parts of the ocean.  a)…

Deep-ocean trenches are the deepest parts of the ocean.  a) What are deep-ocean trenches?  How are they related to plate tectonics?  Be sure to explain in your own words. b) Name a deep-ocean trench and describe where it is located. Extra credit:  Why are trenches always deeper than the seafloor next to them?    Do not rely just on Figure 4-11 for this question.  Also see Figure 4-15.

Longshore currents: a) Under what conditions do longshore cu…

Longshore currents: a) Under what conditions do longshore currents form? b) Describe 2 ways in which rip currents are different from longshore currents.  Do not simply give definitions of each one.  Instead, explain how they are different.Rip currents are described in the second reading assignment: Segar page or Mpora page.