LAKES AND OCEANSBy: Mr. Marjonlien A. Mahusay

LAKES large, inland body of fresh or salty

standing

Types of Lakes

1.Tectonic lakes2.Volcanic lakes3.Glacier lakes

4.Salty lakes5.Artificial lakes

Tectonic lakesFormed because of the movement of the

earth’s crustMovement causes surface rifting, sinking

and depression

Volcanic lakeAssociated with volcanic activityForm when the shut off volcano will be

filled with water

Glacier LakesFormed when the surface is scoured,

deepened and widened by the glacierAnd the surface will be filled by glacier

melt water

Salty LakesCause by the limited supply of

freshwaterTendency to concentrate the water with

minerals

Artificial LakesManmade lakesFor water reservoirs, electricity generation, etc.

LAKES IN BUKIDNON

LAKE NAPALIT

LAKE PINAMALOY

LAKE APO

OCEAN 

OCEAN great body of salt water comprising all

the oceans and seas that cover nearly three-fourths of the surface of the earth

MOVEMENT OF THE OCEAN WATER

1.Wind2.Upwelling and

downwelling3.Tides

MOVEMENT OF THE OCEAN WATER

1.WIND DRIVEN SURFACE CURRENT

WINDPrimary force that drives ocean currentModified by the coriolis effect

CORIOLIS EFFECTApparent deflection

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

MOVEMENT OF THE OCEAN WATER

MOVEMENT OF THE OCEAN WATER

TIDES

Cyclic rise and fall of the ocean waterCause by the gravitational forces

brought by the moon and sun

MOVEMENT OF THE OCEAN WATER

MOVEMENT OF THE OCEAN WATER

LAYERS OF THE OCEAN