1. LAKES AND OCEANS
By: Mr. Marjonlien A. Mahusay

2. LAKES
 large, inland body of fresh or salty standing

3. Types of Lakes
1.Tectonic lakes
2.Volcanic lakes
3.Glacier lakes
4.Salty lakes
5.Artificial lakes

4. Tectonic lakes
Formed because of the movement of the earth’s
crust
Movement causes surface rifting, sinking and
depression

5. Volcanic lake
Associated with volcanic activity
Form when the shut off volcano will be filled with
water

6. Glacier Lakes
Formed when the surface is scoured, deepened
and widened by the glacier
And the surface will be filled by glacier melt water

7. Salty Lakes
Cause by the limited supply of freshwater
Tendency to concentrate the water with minerals

8. Artificial Lakes
Manmade lakes
For water reservoirs, electricity generation, etc.

9. LAKES IN BUKIDNON

10. LAKE NAPALIT

11. LAKE PINAMALOY

12. LAKE APO

13. OCEAN

14. OCEAN
great body of salt water comprising all the oceans
and seas that cover nearly three-fourths of the
surface of the earth

15. MOVEMENT OF THE OCEAN WATER
1.Wind
2.Upwelling and
downwelling
3.Tides

16. MOVEMENT OF THE OCEAN WATER
1. WIND DRIVEN SURFACE CURRENT
WIND
 Primary force that drives ocean current
 Modified by the coriolis effect
 CORIOLIS EFFECT
Apparent deflection

18. MOVEMENT OF THE OCEAN WATER

20. MOVEMENT OF THE OCEAN WATER
2. Upwelling and downwelling
 Upwelling
 transfer of cold water from depth to the surface
 Most important processes
Downwelling- transfers warm surface water to
depth

21. MOVEMENT OF THE OCEAN WATER

22. MOVEMENT OF THE OCEAN WATER
TIDES
Cyclic rise and fall of the ocean water
Cause by the gravitational forces brought by the
moon and sun

24. MOVEMENT OF THE OCEAN WATER

25. LAYERS OF THE OCEAN