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The separation of the Earth into layers was the result of the
differing densities of the rock and mineral materials.
Free oxygen in our atmosphere is important to the development and maintenance of life on Earth because oxygen
is necessary for photosynthesis to occur
In general, the chemical composition of ocean water has remained constant through geologic time.
The nebular hypothesis suggests that
all bodies in the solar system formed from an enormous gas cloud
Which of the following statements regarding continental and oceanic crust is TRUE?
Continental crust is thicker and less dense than oceanic crust.
All of the following are TRUE concerning the deepest part of the ocean except:
the depth of the trench is estimated at 12,500 meters.
The Ming Dynasty ships used magnetic compasses similar to those used today.compasses similar to those used today.
Vine and Matthews determined that new ocean floor was being produced at ocean ridges by examining
the magnetic pattern on the seafloor.
Paleomagnetism confirms that at particular times in the geologic past Earth has had more than one magnetic north pole.
All continents fit together with the least number of overlaps and gaps when the continents are matched along:
contours at around 2000 meters in depth.
Moving from oceanic ridge to oceanic trench, the thickness of the lithosphere
increases in proportion to the distance.
Iceland is geologically active because it sits above a hotspot and is located along the mid-Atlantic ridge.
Fossils of ancient polar plants are currently found near the equator because the
plants lived near the poles, but land masses have drifted to current locations.
All of the following are true of the Wilson Cycle except
the Wilson Cycle is a technique used to date ocean sediments.
Which of the following is characteristic of oceanic-oceanic convergent plate boundaries?
volcanic island arcs
Directly seaward of the continental shelf is a more steeply sloping region called the
Due to the very harsh environment, few organisms are found in association with hydrothermal vents.
The instrument that emits a high-frequency sound beam to measure the depth of the ocean developed in the 1950s is the
The two relatively flat areas on the hypsometric curve represent
some interior continental areas/coastal plains and abyssal plains
Sediments of the continental rise can exhibit characteristics similar to those formed by rivers on land.
Mid-ocean ridges are rises that occupy a small portion of the deep ocean basin, only around 10%.
Abyssal hills are only visible in the Pacific Ocean because
they are higher in the Pacific than in the other ocean basins
The correct order of marine provinces from the coast to the mid-ocean ridge is
shelf, slope, rise, abyssal plain
The Pacific Ring of Fire is the seismically active area at the margins of the Pacific plate where earthquakes and volcanoes are common
The type of marine sediment that forms the thickest deposits world-wide is
neritic coarse lithogenous sediment deposits
Calcium carbonate, phosphates, and manganese may precipitate out of solution to form deposits on the ocean floor.
Organisms that live on the ocean floor may be responsible for keeping manganese nodules from being buried in the sediment.
The sediments that are produced in areas of high primary productivity are indicated by the number(s):
2 & 3.
Calcareous shells will not accumulate on the ocean floor when the water depth exceeds about 4500 meters (around 15,000 feet)
Calcium carbonate is most likely to dissolve in water with which characteristics?
lots of carbon dioxide and cold temperatures
High energy environments are most likely to contain which one of the following?
large particles such as gravel
A pelagic clay contains lots of material that settles to the seafloor through the water column and are:
less than 30% biogenous material.
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