Chapter 13 & 14

Which one of the following is NOT part of the continental margin?

• continental shelf
• continental trench
• continental slope
• continental rise

Which one of the following would most likely be covered with thick turbidite layers? 

• deep-sea fan at the base of a continental slope
• axial rift zone of an active mid-ocean spreading center
• upper part of a steep, narrow, submarine canyon
• ocean floor around a conical-shaped seamount

Seamounts ________. 

• are a special type of oceanic trench
• are volcanoes that form on the ocean floor
• form only in the Pacific Ocean basin
• are submarine canyons found near Australia

Minerals that crystallize directly from seawater are examples of ________. 

• terrigenous sediment
• biogenous sediment
• hydrogenous sediment
• both terrigenous and biogenous sediment

________ develop where oceanic lithosphere bends downward and sinks into the mantle. 

• Submarine canyons
• Abyssal seamounts
• Deep ocean trenches
• Rift valleys on mid-ocean ridges

The ________ Ocean is largest. 

• Atlantic
• Pacific
• Indian
• Arctic

"Black smokers" are associated with ________.

• oceanic ridges
• mineral-rich waters
• hot water
• all of these

The crests of mid-oceanic ridges ________. 

• are heavily mantled with sediment
• lie at depths exceeding 6 kilometers
• contain active rift zones
• are geologically old features

The total amount of solid material dissolved in water is known as ________.

• load
• salinity
• solute
• insoluble residue

The proportion of dissolved substances in seawater is expressed as 0/00, which is the same as ________.

• parts per hundred
• parts per thousand
• parts per million
• molarity