Identification Of Features On The Ocean Floor Quizlet

Typical slopes range between 4 and 16 although slopes as steep as 45 have been measured in the tonga trench of the equatorial south pacific.

Identification of features on the ocean floor quizlet.

Narrow flat abyssal. At the edge of the shelf the ocean floor drops off in a steep incline called the continental slope. However the ocean floor is not flat. The mountain ranges of the mid ocean ridge trenches and underwater volcanoes are all formed by interactions of earth s plates.

Deep sea trenches and their approaches are striking features on the ocean floor. Scientific research submersibles have explored the ocean s deepest trenches but most are designed to reach only the ocean floor. Note that the lettered spaces below do not correspond exactly to the numbered descriptions in the textbook. The ocean floor is called the abyssal plain.

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. Mid ocean ridge underwater on the sea floor that are made up of magma and run all around the ocean. Beyond this slope is the abyssal plain a smooth and nearly flat area of the ocean floor. Features of the ocean include the continental shelf slope and rise.

The following features are shown at example depths to scale though each feature has a considerable range at which it may occur. Label the ocean basins a. This graphic shows several ocean floor features on a scale from 0 35 000 feet below sea level. Review the i can statements once.

Early civilizations believed the ocean floor to be a smooth bowl devoid of features or life. Write the name for each feature using the choices listed below. Today much of our exploration of the oceans happens using sonar and remotely operated vehicles. 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.

Mid ocean ridge group of underwater mountain chains criss crossing the oceans. All answers are yes but responses may lead to class discussion. The ocean floor has an s shape basin that extends north to. Navigators of ships and submarines are interested in avoiding dangers or impediments to their progress.

In general the cross sections of deep sea trenches are v shaped with steeper landward sides. It is used as a reference to define coastal features and calculate the elevation of topographical elements. Submerged volcanic mountains on the ocean floor volcanic origin at least 1 000m high continental rise base of the continental slope made of large piles of sediment area located between the continental slope and the deep ocean basin abyssal plain. It is formed by an outpouring of magma.

It has a wide variety of geological features e g fig.