OCE EXAM

volcanic

1. Seamounts and abyssal hills are ________ in origin. sedimentary metamorphic seismic volcanic erosional

A) coal B) wind power C) rare-earth elements D) gas hydrates ---- E) Ethanol

1. The main energy resources associated with marine sediments are petroleum and ________

perpendicular to the ridge axis.

1. With respect to mid-ocean ridges, transform faults are: associated with hydrothermal vents. parallel to the rift valley. located in submarine canyons. perpendicular to the ridge axis.

A) fecal pellets. B) wind C) precipitation D) carbonate dissolution E) deposit feeders

A very important way to increase the settling rate of fine particles in the open ocean is via ________.

A) Stromatolites B) Chalk C) Coccolithophores D) Limestone E) Diatoms -----

Examine the five words and/or phrases and determine the relationship among the majority of words/phrases. choose the one option that does not fit the pattern

Trenches

Examine the five words and/or phrases and determine the relationship among the majority of words/phrases. Choose the one option that does not fit the pattern. Pillow basalts Metal sulfide deposits Trenches Rift valley Seamounts

A) Tektites ---- B) Halite and other salts C) Phosphates D) Manganese nodules E) Metal sulfides

Examine the five words and/or phrases and determine the relationship among the majority of words/phrases.Choose the one option that does not fit the pattern.

oceanic ridges.

New lithosphere is produced in association with: deep-sea trenches. hydrothermal vents. transform faults. fracture zones. oceanic ridges.

less than 30% biogenous material

Pelagic clays contain lots of material that settles to the seafloor through the water column and are ________. A) less than 30% neritic material B) more than 30% neritic material. C) more than 30% hydrogenous material D) more than 30% biogenous material E) less than 30% biogenous material

A) Biogenous Sediment B) Cosmogenous Sediment C) Hydrogenous Sediment D) Lithogenous Sediment E) Terrigenous Sediment

Rock salt (halite) is an example of which of the following sediment types?

A) Biogenous Sediment B) Cosmogenous Sediment C) Hydrogenous Sediment D) Lithogenous Sediment ----

Sandstone, Abyssal clay Turbidite are an example of which of the following sediment types?

Cosmogenous

Sediments with an extraterrestrial origin are called ________. A) cosmogenous B) volcanogenic C) hydrogenous D) biogenous E) lithogenous

B) Cosmogenous Sediment ---

Tektites are an example of which of the following sediment types? A) Biogenous Sediment B) Cosmogenous Sediment C) Hydrogenous Sediment D) Lithogenous Sediment E) Terrigenous Sediment

A) Biogenous Sediment ---- B) Cosmogenous Sediment C) Hydrogenous Sediment D) Lithogenous Sediment

The White Cliffs of Dover are an example of which of the following sediment types?

A) productivity B) ecology C) erosion D) destruction E) dilution -----

The deposition of coarse-grained lithogenous material in neritic environments along continental margins is an example of the ________ of biogenous sediment.

A) dilution B) erosion C) ecology D) productivity ---- E) destruction

The number of organisms present in the surface water above the ocean floor is called

A) paleoceanography --- B) plate tectonics C) biogeochemistry D) climatology E) historical oceanography

The study of how the ocean, atmosphere, and land have interacted in the past to produce changes in ocean chemistry, circulation, biology, and climate is called ________. A) paleoceanography B) plate tectonics C) biogeochemistry D) climatology E) historical oceanography

.A) pelagic biogenous calcareous deposits B) manganese nodule deposits C) neritic siliceous sediment deposits D) neritic, lithogenous sediment deposits ------

The type of marine sediment that forms the thickest deposits worldwide is________

diatom ooze

Which of the following is a biogenous sediment? A) Diatom ooze B) Volcanic particles C) Glacial deposits D) Beach sand E) Clays

D) Deep-sea hotsprings

Which of the following is thought to have enriched ocean floor sediments with rare-earth elements?A) Groundwater leaching B) Nodule and crust creation C) Sea floor methane seeps D) Deep-sea hotsprings E) Clathrate formation

c. petroleum

Which of the following resources found in ocean sediments has the greatest economic value? A) Sand and gravel B) Gas hydrates C) Petroleum D) Manganese nodules and crusts E) Rare-earth elements

A) Long line B) Rotary corer C) Gravity corer D) Seiche disk E) Dredge ----

Which of the following was used during early exploration of the oceans to collect sediment samples?

huge cloud of gas and space dust

nebula

all bodies in the solar system formed from a cloud of dust and hydrogen and helium

nebular hypothesis