Earth's Oceans Question Preview (ID: 34219)
Earth's Oceans And Features.
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Why are most living organisms found on the continental shelf?
a) That's where most of the garbage is dumped in the ocean
b) The water is deep and cold, so organisms can hide at the bottom
c) That's where the warm ocean currents are
d) The water is shallow enough for sunlight to penetrate to the bottom, allowing for the growth of phytoplankton.
The organisms that form the base of most ocean food webs are
a) plankton
b) coral
c) fish
d) kelp
The part of the ocean that extends from the low-tide line to the edge of the continental shelf is the
a) deep zone
b) intertidal zone
c) neritic zone
d) open-ocean zone
Why is upwelling important ?
a) It brings nutrients up from the ocean floor to the surface
b) It brings warmer water up to mix with the colder water
c) It takes nutrients from the surface to ocean floor
d) It allows fish to go out from the shore to the deep ocean
Where are hydrothermal vents?
a) near the mid ocean ridge
b) surface zone
c) intertidal zone
d) neritic zone
Sea floor spreading occurs in places where two plates are
a) converging
b) motionless
c) breaking the surface
d) diverging
Benthos organisms live
a) on the surface of the water
b) throughout the water column
c) on the ocean floor
d) in shallow water
A deep canyon in the ocean floor is called a(n)
a) seamount
b) continental shelf
c) abyssal plain
d) trench
Where would you expect to find phytoplankton
a) on the ocean bottom
b) near the surface of the ocean
c) near hydrothermal vents
d) in a trench
The steep edge of the continental shelf that marks the true edge of the continent is the
a) continental slope
b) continental shelf
c) abyssal plain
d) mid-ocean ridge
Which of the following features of the ocean floor occur where two plates diverge?
a) abyssal plain
b) seamount
c) trench
d) mid-ocean ridge
A coastal inlet or bay in which freshwater from rivers mixes with salt water from the ocean is called a(n)
a) transition zone
b) estuary
c) abyssal plain
d) hydrothermal vents
The area that stretches from the highest high tide on land to the lowest low tide is the
a) continental shelf
b) open ocean
c) deep zone
d) intertidal zone
Which below is not a reason why humans cannot explore the deep ocean?
a) it is too cold
b) the pressure is too great
c) it is too polluted
d) no sunlight
A technique that uses sound waves to measure the depth of the ocean floor is
a) dredging
b) sonar
c) weighted lines
d) radar
Which of the organisms below is an example of plankton?
a) dolphin
b) crab
c) sea star
d) phytoplankton
The gently sloping, shallow area of the ocean floor that extends outward from the edge of a continent is the
a) continental slope
b) continental shelf
c) volcanic island
d) seamount
What would you use if you wanted to map the mid-ocean ridge?
a) a satellite
b) a buoy
c) a submersible
d) sonar
What would you use if you wanted to map the distribution of phytoplankton on the ocean surface?
a) a satellite
b) sonar
c) a buoy
d) a research ship
What would you use if you wanted to find the temperature of the water off the coast of Myrtle Beach?
a) sonar
b) a satellite
c) a research ship
d) a buoy
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