1. How does life change in each zone of the ocean?
Oceanography
How does temperature, pressure and amount of light change in each zone of the ocean?
How does life change in each zone of the ocean?

2. Oceans Largest reservoir of heat
Stored heat drives weather/climate
Ocean currents are a source of large scale distribution of energy and resources

3. Ocean Water Sodium chloride
Salinity: A measure of the amount of dissolved solids in water.
Evaporation increases salinity
Fresh water decreases salinity

4. Sources of Oxygen
1. Mixed in from the air
2. Gets added in by plants

5. Sources of solids
Dissolved chemicals and solids washed into oceans through erosion
Suspended particles swept by the wind
Solid and gaseous ejections from underwater volcanoes

8. Division by light levels
Photic – light
Euphotic – upper 200 meters
Majority of life and economic activity
Aphotic – aka midnight zone

10. Division by Ocean temperatures
Surface Layer
Location and season

11. Thermocline
The temperature drops fast with depth.

12. Deep Water
Cold all year .

13. Division by land features
Shore (Neritic)
Open Ocean (Pelagic or Oceanic)
Deep Ocean (Abyssal)

14. Neritic Zone Low tide point to a depth of 200m
Covers most of the continental shelf

15. Oceanic Zone
Aka Pelagic Zone
Open Ocean

16. Deep Ocean
Abyssal Plains
Marianas Trench (11,000m/56,000 ft.)

17. Other Oceanic Terms to Know
Benthic – bottom dwelling
Nekton – animals that are able to actively swim
Plankton – plants/animals that are unable to fight currents
Intertidal – between the tides

18. Ocean Exploration 1. Pressure 2. Darkness 3. Lack of air
4. Chilling cold

19. Ocean Floor
Like land, the ocean floor has: mountains, trenches, hills, plains, and canyons.

20. Ocean Floor Mapping
Sonar and Satellites