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THE OCEAN<br />
WHAT AN IMMENSE PLACE<br />Everything about the ocean is immense — it has the tallest mountains in the world and the deepe...
OCEANS ARE ALIVE!<br />Most scientists think life began in the ocean over 3 billion years ago. Today, the ocean contains a...
Marine animals come in all kinds of weird shapes, sizes, and colors; and they live in all kinds of different environments ...
Gimme some energy<br />Life in the ocean depends on energy. No animal can move or grow without energy. Most ocean animals ...
What’s the diff between a sea and the ocean??<br />You&apos;ve heard of &quot;one world?&quot; Well, technically, all the ...
FACTS<br />The world&apos;s five oceans, ranging from the biggest to smallest, are the Pacific, the Atlantic, the Indian, ...
FACTS<br />The Pacific Ocean is, by far, the largest ocean. Its surface area covers 64 million square miles or approximate...
The deepest place in the ocean is the Mariana Trench. At a depth of 7 miles, it&apos;s 6 times deeper than the Grand Canyo...
The world&apos;s longest mountain chain, the mid-ocean ridge, is in the ocean. It is four times longer than the Andes, the...
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Oceans

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An introduction to Oceans for Elective Geography.

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Oceans

  1. 1. THE OCEAN<br />
  2. 2. WHAT AN IMMENSE PLACE<br />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&apos;s surface. That&apos;s 139 million square miles or 139 with 19 zeros after it. And it&apos;s not just wide. It&apos;s deep — 12,460 feet deep on average. That&apos;s 10 Empire State buildings stacked on top of each other!<br />
  3. 3. OCEANS ARE ALIVE!<br />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&apos;t discovered yet<br />
  4. 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.<br />The blue whale, the largest animal in the world, lives in the open ocean, along with millions of tiny drifting organisms called plankton.<br />In the tropical seas, silvery great barracudas pursue colorful coral reef fish.<br />Then there&apos;s the deep sea — where it&apos;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.<br />No matter where you go in the ocean, you will always find life.<br />
  5. 5.
  6. 6. Gimme some energy<br />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.<br />The connection between organisms based on the transfer of energy is called a food chain or a food web.<br />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.<br />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.<br />
  7. 7.
  8. 8. What’s the diff between a sea and the ocean??<br />You&apos;ve heard of &quot;one world?&quot; Well, technically, all the world&apos;s oceans and seas are part of one continuous mass of seawater.<br />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.<br />Seas are usually smaller than oceans and are partially enclosed by land. But otherwise, they&apos;re exactly the same thing.<br />
  9. 9. FACTS<br />The world&apos;s five oceans, ranging from the biggest to smallest, are the Pacific, the Atlantic, the Indian, the Antarctic, and the Arctic.<br />
  10. 10. FACTS<br />The Pacific Ocean is, by far, the largest ocean. Its surface area covers 64 million square miles or approximately one-third of Earth&apos;s surface. It is bigger than all of Earth&apos;s continents put together.<br />
  11. 11. The deepest place in the ocean is the Mariana Trench. At a depth of 7 miles, it&apos;s 6 times deeper than the Grand Canyon. That&apos;s deeper than Mt. Everest is tall!<br />
  12. 12. The world&apos;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!<br />

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