Ocean Sediments and Plate Tectonics

Sonar is the most accurate way used to map

• the ocean floor

• sea level

• the moons of Jupiter

• the Grand Canyon

This is a shelf that is gently sloped and extends from the shoreline toward the deep-ocean basin.

• continental shelf

• continental basin

• seamount

• continental rise

This sediment consists of shells and skeletons of marine organisms.

• biogenous

• hydrogenous

• lithogenous

• terrigenous

This is a deep, steep-sided valley that starts on the continental slope

• submarine canyon

• deep sea trench

• rift valley

• continental slope

Which feature includes the deepest parts of the ocean

• deep sea trench

• contintental margin

• atoll

• rift valley

Moving crustal plates plunging back into Earth's mantle causes this feature

• deep-ocean trench

• turbidity currents

• continental rise

• submarine canyon

A characteristic of hydrothermal vents is that

• there isn't any sunlight there

• no life exists there

• it is made up of only salt water

• it is hydrogenous

These plains are the most level places on Earth.

• abyssal plains

• coastal plains

• continental plains

• ocean plains

What is the downslope movements of dense, sediment-laden water

• turbidity currents

• shelf currents

• mid-ocean ridges

• atolls

Feature "B"

• Continental margin

• Lithosphere

• Oceanic Ridge

• Ocean basin