Oceans of the World
Map of Earth—Without the Water
Oceans of the World
• Pacific Ocean
• Atlantic Ocean
• Indian Ocean
• Southern Ocean
• Arctic Ocean
Oceans of the World
• About 70% of the earth is covered by
water
• Some marine forms of life have still
not been discovered
• 94% of life on earth lives in the
ocean
• The longest mountain range in the
world is underwater.
Marine Life
Oceans of the World
• Underwater hot springs spout water
that’s 650 degrees Fahrenheit — hot
enough to melt lead
• One swallow of sea water has 1
million bacteria and 10 million
viruses
• In the deepest ocean, the pressure is
equivalent to one person trying to
support 50 jumbo jets
Ocean Landforms
Pacific Ocean
• Largest Ocean
• Larger than all of the land on earth
combined
• Deepest part of any ocean is in the
Pacific at the Mariana Trench (about
36,000 feet deep/almost 7 miles)
• Average depth=12,500 feet
• 75% of earth’s volcanoes are under the
Pacific
• Most of the world’s islands are found
in the Pacific—it has over 25,000
Formation of an Island
Formation of an Island
Atlantic Ocean
• Covers about 25% of the earth’s
surface (about 6.5 times the size
of the U.S.)
• Average depth is about 11,000
feet
• Mid-Atlantic Ridge divides the
Atlantic into two major basins
• Many major ports are located
along the Atlantic Ocean
• Saltiest Ocean
• Water in the North Atlantic
circulates clockwise; in the South
it circulates counter-clockwise
Indian Ocean
• 20% of all water on earth is in the
Indian Ocean
• Major sea route connecting Africa
and Asia to Europe and America
• Many shipping ports on shores
• Around 40% of the world’s off shore
oil comes from the Indian Ocean
• Warm ocean—has limited marine
life (average=72°)
• Average depth is about 12,700 feet
(Deepest)
Southern Ocean
• Also known as Antarctic Ocean
• Has great influence on world
weather patterns
• Large variety of marine life due
to cold temperatures
• Has large oil and gas fields as
well as other valuable minerals
• Covers only 6% of earth’s surface
Southern Ocean
• Average depth=10,700 feet
• Icebergs exist year round
• The temperature of the water ranges
between 28° and 50°
• A large part of the ocean freezes
during winter
• There are only a few ports—those
for research stations on Antarctica
Southern Ocean
Arctic Ocean
• Smallest and shallowest ocean
• During most of the year, much of
the ocean is covered in ice making it
impassable.
• Some ice on the ocean is hundreds
of feet thick
• On average, it has the lowest saline
level because of the low levels of
evaporation
• Little plant life is found, but some
endangered species live in the ocean
• http://www.7continents5oceans.com/
• http://www.kids-world-travel-guide.com/ocean-facts-for-kids.html