1. Features of the Ocean Floor

3. MID OCEAN RIDGES CHAINS OF SUBMARINE VOLCANIC MOUNTAINS
CREATE HYDROTHERMAL VENT ECOSYSTEMS

4. Mid-Ocean Ridges

7. Trenches DEEPEST PARTS OF THE OCEAN MARIANA’S TRENCH DEEPEST
1,580 MILES LONG
7-11 miles deep

8. Marianas Trench

9. SEA MOUNTS
VOLCANO THAT DOES NOT RISE ABOVE SEA LEVEL

10. Hot Spot ACTIVE VOLCANIC ISLANDS REACH ABOVE SEA LEVEL EXAMPLE: HAWAII
creation of new island

11. CONTINENTAL SHELF GENTLY SLOPING part of continent 8% OF OCEAN
MOST BIOLOGICALLY RICH

12. CONTINENTAL SHELF

13. SUBMARINE CANYONS DEEP GROOVES CUT INTO CONTINENTAL SLOPES
USED TO BE RIVER EDGES

14. CONTINENTAL SLOPE EDGE OF ACTUAL CONTINENT
DEEP DROP OFF TO OCEAN BOTTOM

15. Upwelling will carry nutrients upward over corals, creating a nutrient rich environment

16. BIG DIFFERENCE FROM EAST TO WEST COAST

17. WEST COAST OF US

18. ACTIVE MARGINS

19. WEST COAST ACTIVE MARGINS
Lots of Tectonic Activity & Steep Rocky Shorelines

20. PASSIVE MARGINS
Flat Coastal Plains and Gradual Slopes

22. ABYSSAL PLAINS ABOUT 10,000 TO 13,000 FEET
RELATIVELY FLAT area of deep ocean
COVERED BY THICK LAYERS OF SEDIMENT

23. SONAR HOW WE MAP OCEAN FLOOR
measuring the length of time a sound signal takes to return.
Scientists "See" Ocean Floor via Sonar - YouTube