oceans
Post on 18-May-2015
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- 1. THE OCEAN
2. WHAT AN IMMENSE PLACE
Everything about the ocean is immense it has the tallest mountains
in the world and the deepest valleys. It covers 72 percent of the
Earth's surface. That's 139 million square miles or 139 with 19
zeros after it. And it's not just wide. It's deep 12,460 feet deep
on average. That's 10 Empire State buildings stacked on top of each
other!
3. OCEANS ARE ALIVE!
Most scientists think life began in the ocean over 3 billion years
ago. Today, the ocean contains an amazing array of life at every
depth. Over 1 million known species of plants and animals live
there, and scientists say there may be as many as 9 million species
we haven't discovered yet
4. Marine animals come in all kinds of weird shapes, sizes, and
colors; and they live in all kinds of different environments within
the ocean.
The blue whale, the largest animal in the world, lives in the open
ocean, along with millions of tiny drifting organisms called
plankton.
In the tropical seas, silvery great barracudas pursue colorful
coral reef fish.
Then there's the deep sea where it's as dark as night and icy cold.
At depths as great as 7,000 feet below the surface,tubeworms live
in the most extreme environment in the world hot sea vents. There,
the water temperature changes from scalding hot to icy cold in the
space of a few feet.
No matter where you go in the ocean, you will always find
life.
5. 6. Gimme some energy
Life in the ocean depends on energy. No animal can move or grow
without energy. Most ocean animals get their energy by eating
plants or other animals.
The connection between organisms based on the transfer of energy is
called a food chain or a food web.
Most food webs start with the conversion of sunlight into food
through a process called photosynthesis. Photosynthesis is an
important process that occurs at the surface of the ocean.
But deep within the ocean, at hydrothermal vents, food chains are
based on the conversion of chemical energy into food. This process
is called chemosynthesis.
7. 8. Whats the diff between a sea and the ocean??
You've heard of "one world?" Well, technically, all the world's
oceans and seas are part of one continuous mass of seawater.
But because the ocean is so big, humans have divided it up and
named the different parts. There are five oceans and several dozen
seas.
Seas are usually smaller than oceans and are partially enclosed by
land. But otherwise, they're exactly the same thing.
9. FACTS
The world's five oceans, ranging from the biggest to smallest, are
the Pacific, the Atlantic, the Indian, the Antarctic, and the
Arctic.
10. FACTS
The Pacific Ocean is, by far, the largest ocean. Its surface area
covers 64 million square miles or approximately one-third of
Earth's surface. It is bigger than all of Earth's continents put
together.
11. The deepest place in the ocean is the Mariana Trench. At a
depth of 7 miles, it's 6 times deeper than the Grand Canyon. That's
deeper than Mt. Everest is tall!
12. The world's longest mountain chain, the mid-ocean ridge, is in
the ocean. It is four times longer than the Andes, the Rockies, and
the Himalayas combined!
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