Ocean study this for three
Abyssal plains are more extensive on the floor of the Atlantic as compared to those on the floor of the Pacific
True
Black smokers are hydrothermal vents that discharge superheated water with high concentrations of metal sulfides.
True
Passive continental margins are characterized by all of the following except:
deep-sea trenches
The separation of the Earth into layers was the result of the:
differing densities of the rock and mineral materials.
continental crust
granite
crust and upper mantle
lithosphere
lower portion of mantle
mesosphere
The time between two successive waves is called the:
period
The correct order of marine provinces from the coast to the mid-ocean ridge is:
shelf, slope, rise, abyssal plain.
Characteristics of active continental margins include all of the following except: Select one: a. volcanic and earthquake activity. b. broad continental shelf. c. chains of islands. d. thin sediment accumulation. e. deep-sea trenches.
B
All of the following are considered part of the continental margin except the: Select one: a. continental rise. b. continental shelf. c. fracture zone. d. continental slope. e. submarine canyon.
C
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. A. abyssal hill B. guyot C. ridge crest D. sea knoll E. tablemount
C
Earth developed the first ocean by about 4 million years ago.
False
Greater temperature fluctuations are seen in coastal areas due to the marine effect.
False
Hydrothermal vents are seafloor cold seeps with high concentrations of sulfur and salts.
False
Mid ocean ridges are rises that occupy a small portion of the deep ocean basin, only about 10%
False
Seamounts form from ancient tablemounts.
False
The deepest portions of the ocean are part of the relatively narrow features called submarine canyons.
False
Submarine canyons were most likely formed by
erosion by turbidity currents
Submarine canyons were most likely formed by:
erosion by turbidity currents
Passive continental margins are characterized by all of the following except: Select one: a. deep-sea trenches. b. shallow coastal waters. c. very little volcanic and earthquake activity. d. broad continental shelf. e. thick sediment accumulation.
A
Carbon dating is used to determine the absolute age of a rock or fossil.
True
Hydrothermal vents have a significant impact on ocean chemistry.
True
Oceans with passive plate margins have continental slopes with more gradual slopes than oceans with active plate margins
True
Oceans with passive plate margins have continental slopes with more gradual slopes than oceans with active plate margins.
True
Sediments of the continental rise can exhibit characteristics similar to those formed by rivers on land
True
The Pacific Ring of Fire is the seismically active area at the margins of the Pacific plate where earthquakes and volcanoes are common.
True
The broadest continental shelves occur in the Arctic Ocean.
True
Underwater avalanches of muddy water mixed with rocks and debris are
Turbidity currents