CHAPTER: 7
Earth’s
oceans
LEARNING
OBJECTIVES
AT THE END OF THIS DISCUSSION THE STUDENT WILL BE
ABLE TO:
• Define what is an ocean and how the ocean
forms
• Distinguish the 5 oceans of the earth
• Determine how the ocean influence our climate
WHAT IS THE
DIFFERENCE BETWEEN
AN OCEAN AND A SEA?
OCEANS - ARE VAST, LARGE
BODIES OF SALTWATER THAT
COVER ABOUT 71% OF
EARTH'S SURFACE.
HOW IS THE OCEAN
CREATED?
OCEAN FORMATION
EARTH BEGAN TO
FORM ABOUT 4.6
BILLION YEARS
AGO
OCEAN FORMATION
OUTGASSING
FROM VOLCANIC
ACTIVITY
OCEAN FORMATION
METEORITES AND
COMETS
WHAT ARE THE FIVE
OCEANS OF THE
EARTH??
OCEANS OF THE
EARTH
• PACIFIC OCEAN
• ATLANTIC OCEAN
• INDIAN OCEAN
• NORTH ANTARTIC
OCEAN
• SOUTH ANTARTIC
OCEAN
OCEANS OF THE
EARTH
• PACIFIC OCEAN
• ATLANTIC OCEAN
• INDIAN OCEAN
• NORTH ANTARTIC
OCEAN
• SOUTH ANTARTIC
OCEAN
SOME CHARACTERISTICS
OF THE OCEAN
AVERAGE SALINITY
OF THE OCEAN
• 34ppt
• ppt means parts per
thousand
• 1ppt = 1000g
• 1 0 0 0 g o f w a t e r, 3 4 g
of salt is dissolved
on it
LET’S
RECALL
DIFFRENT FACTORS
THAT INFLUENCE
OUR CLIMATE BY
THE OCEAN
HEAT TRANSFER
The ocean absorbs, stores, and
moves heat, which drives
atmospheric circulation and
weather patterns. For example,
heat from the tropical ocean
powers hurricanes, cyclones, and
polar storms.
HEAT TRANSFER
The ocean absorbs, stores,
and moves heat, which
drives atmospheric
circulation and weather
patterns. For example,
heat from the tropical
ocean powers hurricanes,
cyclones, and polar storms.
HEAT TRANSFER
The ocean absorbs, stores,
and moves heat, which
drives atmospheric
circulation and weather
patterns. For example,
heat from the tropical
ocean powers hurricanes,
cyclones, and polar storms.
OCEAN
CURRENTS
Ocean currents carry heat for
thousands of kilometers before
releasing it back into the
atmosphere
OCEAN CURRENTS
Ocean currents carry
heat for thousands of
kilometers before
releasing it back into
the atmosphere
ABSORBTION OF CO2
The ocean plays a crucial role in
absorbing a significant portion of
the world's carbon dioxide (CO₂)
emissions, acting as a "carbon
sink."
ABSORBTION OF CO2
The ocean plays a crucial
role in absorbing a
significant portion of the
world's carbon dioxide
(CO₂) emissions, acting as
a "carbon sink."
MARINE LIFE
Marine life in the ocean
contributes in maintaining our
atmosphere healthy and play a
significant role in combating
climate change
MARINE LIFE
Marine life in the ocean
contributes in maintaining
our atmosphere healthy
and play a significant role
in combating climate
change
QUESTIONS?
LEARNING
OBJECTIVES
AT THE END OF THIS DISCUSSION THE STUDENT WILL BE
ABLE TO:
• Define what is an ocean and how the ocean
forms
• Distinguish the 5 oceans of the earth
• Determine how the ocean influence our climate
AS THE OCEAN IS BEAUTIFUL
N O T O N LY I N C A L M B U T A L S O
IN A STROM, SO IS HAPPINESS
F O U N D N O T O N LY I N P E A C E
BUT ALSO IN STRIFE
-Ivan Panin
T H A N K YO U F O R
LISTENING!!
-Ivan Panin
