1. Journey to Bottom of the Ocean

2. Continent A continent is a large landmass.
Asia
Africa
North America
South America
Antarctica
Europe
Australia
A continent is a large landmass.
There are seven continents on the Earth
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3. Click on a feature to go there or click next to continue with the journey
Rift

4. We will begin our journey where land meets the ocean.
Do you know where we are?
Yes. At the beach.
Beaches are the fastest changing part of the ocean. They change with every wave.
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5. Continental Shelf There are several part to the continental shelf.
The edge of the continents slope down from the shore into the ocean. The part of the continent located under water is known as the Continental Shelf.
There are several part to the continental shelf.
The continental break
The continental slope
The continental rise
The continental shelf is rich in resources such as marine life, minerals and oil. For this reason, countries around the world claim the bordering continental shelf as part of their territories.
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6. Continental Slope
The continental slope is a steep slope that connects the continental- shelf to the bottom of the ocean floor. The slope begins at a depth of around 460 feet (140 meters).
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7. Volcanic Island Arc
Volcanic island arcs are a series of seamount tall enough to break the sea surface and form an island.
The Augustine Island Volcano in Alaska is an example of a volcanic arc.
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8. Abyss The deepest point in the ocean is called the abyss
The Mariana Trench is the deepest known point in the ocean. It is located in the western part of the Pacific Ocean near the fourteen Mariana Islands.
The Mariana Trench is a semi-circle that extends from the northeast to the southwest for about two thousand five hundred fifty meters and is seventy kilometers wide.
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9. Mid Ocean Ridge
The mid ocean ridge is a series of mountain ranges on the ocean floor.
They are more than 84,000 kilometers (52,000 miles) in length and they extend through the North and South of the Atlantic ocean, the Indian Ocean, and the South Pacific ocean.
According to the plate tectonics theory, volcanic rock is added to the sea floor as the mid-ocean ridge spreads apart.
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10. Abyssal Plain
Abyssal plains are the vast, flat, sediment-covered areas of the deep ocean floor. They are the flattest, most featureless areas on Earth. These flat abyssal plains occur at depths of over 6,500 ft (1,980 m) below sea level.
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11. Seamount
Seamounts are undersea volcanic mountains rising from the bottom of the sea that do not break the water's surface
Seamounts are usually isolated and cone-shaped, often volcanic in origin.
Smaller volcanoes are called sea knolls, and flat-topped seamounts are called guyots.
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12. Guyot
Guyots are seamounts that have built above sea level. Over time erosion by waves destroyed the top of the seamount resulting in a flattened shape
The seamount becomes submerged to form a Guyot
Seamount rises above water
Erosion by waves flattens the top of the mount
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13. Ocean Trench
A deep-sea trench is a narrow, elongate, v-shaped depression in the ocean floor.
Trenches are the deepest parts of the ocean, and the lowest points on Earth.
They reach depths of nearly 7 mi (10 km) below sea level.
They can be thousands of miles in length, yet as little as 5 mi (8 km) in width.
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14. Rift
A rift valley is formed where two tectonic plates pull apart from one another creating a deep valley.
Rifts are the opposite of mountain ranges like the Alps or the Himalayas where the plates push together to create a mountain.
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15. Compare continental and oceanic landforms
Continental landform
Canyon
Valley
Volcanic mountain
Mountain Range
Low hills or plains
Oceanic landform
Trench
Rift
Seamount
Mid-ocean ridge
Ocean basin (abyssal plains)

16. Sources Back to Map http://www.utdallas.edu/~pujana/oceans/guyot.html
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