Chapter 14-15 Test

Approximately what percentage of Earth's surface is covered by oceans?

• 40

• 50

• 60

• 70

Which ocean basin is the largest?

• Atlantic

• Pacific

• India

• Artic

The use of sound waves to determine the depth of the ocean is called

• submarine sounding

• sonar

• satellite altimetry

• submersible sounding

The gently sloping submerged surface that extends from the shoreline toward the ocean basin floor is the continental

• shelf

• slope

• rise

• margin

Submarine canyons are believed to have been created by

• rivers during the ice age

• earthquakes

• lost ships

• subduction

Important mineral deposits, including large reservoirs of oil and natural gas, are associated with

• the ocean basin floor

• the continental shelf

• abyssal plains

• the continental rise

Calcareous ooze is an example of

• terrigenous sediment

• biogenous sediment

• hydrogenous sediment

• a combination of hydrogenous and terrigenous sediment

Sediments that consist of mineral grains that were eroded from continental rocks are called

• terrigenous

• biogenous

• hydrogenous

• hydrates

What could gas hydrates be used for?

• as landfill

• to make concrete

• as a source of energy

• as a source of cobalt and copper

Economically valuable materials such as diamonds, tin, and platinum are associated with which ocean floor resources

• oil and natural gas

• sand and gravel

• evaporative salts

• manganese nodules