Identification Of Features On The Ocean Floor Answers

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Identification of features on the ocean floor answers.

Continental shelf 300 feet continental slope 300 10 000 feet abyssal plain 10 000 feet abyssal hill 3 000 feet up from the abyssal plain seamount 6 000 feet. It is used as a reference to define coastal features and calculate the elevation of topographical elements. Less than one tenth of 1 of. Even though new ocean floor is constantly being created at the mid ocean ridge earth always stays the same size.

This underwater mountain system can be found in all oceans of the world. It is formed by an outpouring of magma. These areas are among the flattest and least explored on the earth s surface. The mountain ranges of the mid ocean ridge trenches and underwater volcanoes are all formed by interactions of earth s plates.

Some of the ocean floor are mountains valleys trenches plains and even volcanoes. Identification of features on the ocean floor different oceanic features are numbered 1 through 10 adjacent to the figure below. Features found on the ocean basin floor consist of valleys and rifts. The ocean floor off the continental shelf is known as the abyssal plain.

Mid ocean ridge group of underwater mountain chains criss crossing the oceans. Beyond this slope is the abyssal plain a smooth and nearly flat area of the ocean floor. On the sea floor made up of rocks minerals sediments and sand a steep cliff like slope increases water pressure and is where the continent connects with the ocean floor. This graphic shows several ocean floor features on a scale from 0 35 000 feet below sea level.

The mid ocean ridges which wrap around the ocean floor like the seam of a baseball are high topographic features but as you go away from either side of a ridge the ocean floor subsides as it cools. Features of the ocean floor worksheet answers. Note that the lettered spaces below do not correspond exactly to the numbered descriptions in the textbook. Mean water level observed for a given duration day month year.

The abyssal plain has a depth between 2 200 and 5 500 m 7 200 and 18 000 ft and covers about 40 of the ocean floor. The following features are shown at example depths to scale though each feature has a considerable range at which it may occur.