Name: ______________________________
Date: ________________
Marine Science
Block: _______
UNIT 2 TEST REVIEW – OCEANS, SEA FLOOR FEATURES, BATHYMETRY &
PLATE TECTONICS
Topics to study:
1. Oceans
a. Major oceans
b. Locations of trenches & MOR
c. Locations of seas
2. Ocean floor features / topography
a. Continental Margin
i. Continental Shelf
ii. Continental Slope
iii. Shelf Break (where shelf & slope meet)
iv. Continental Rise
v. Submarine Canyon
b. Ocean Basin
i. Abyssal Plain
ii. Abyssal Hill
iii. Seamount
iv. Guyot
v. Island
vi. Hot Spots
vii. Trenches
viii. Mid Ocean Ridge (MOR)
ix. Rift Valley
3. Bathymetry – how do we determine the topography of the ocean floor? SONAR
4. Plate Tectonics
a. Continental Drift
i. Alfred Wegener
ii. Theory
iii. Pangaea
iv. Evidence
1. Puzzle-fit of continents
2. Similar rocks, mountains & fossils
v. Why rejected
b. Plate Tectonics
i. Theory
ii. Layers of Earth – core, mantle, crust (composition)
1. Oceanic crust – basalt (dense)
2. Continental crust – granite (less dense)
iii. Lithosphere & asthenosphere (physical characteristics)
iv. How many plates
v. Evidence
1. Location of volcanoes & earthquakes
2. Magnetic patterns
3. Seafloor spreading (seafloor created at MOR, destroyed at trenches)
4. Older rocks away from MOR
5. Hot spot volcano patterns (Hawaiian islands)
vi. Plate boundaries
1. Divergent Oceanic-Oceanic
2. Divergent Continental-Continental
3. Convergent Continental-Continental
4. Convergent Oceanic-Continental or Oceanic-Oceanic (Subduction)