Summed over the entire Earth ________ .
Group of answer choices
the rate of lithospheric consumption at subduction zones is greater than the rate of lithospheric production at mid ocean ridges
the rate of lithospheric consumption at subduction zones is less than the rate of lithospheric production at mid ocean ridges
the rates of lithospheric consumption at subduction zones and production at mid ocean ridges are equal
the rates of lithospheric consumption at subduction zones and production at mid ocean ridges have not been equal over the previous 500 million years but are now presently equal
none of these are correct
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Question 152 pts
Of the following, which are factors that contribute to the earth's continental topography and oceanic bathymetry? That is, which factors facilitate the continental topography being located at about 0 km to 1 km above sea level where as most oceanic bathymetry is about 4 km to 5 km below sea level? Five of the following ten answers are correct. Select only five.
Group of answer choices
continental crust is composed of granite
oceanic crust is composed of basalt
the mantle is higher density than most of the crust
the mantle is ductile
continental crust is more buoyant than oceanic crust
continental crust is composed of basalt
oceanic crust is composed of granite
the crust is higher density than most of the mantle
the mantle is brittle
oceanic crust is more buoyant than continental crust
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Question 162 pts
The age of the ocean floor ________.
Group of answer choices
(A) becomes progressively younger when the observer is moving away from any mid-ocean ridge
(B) becomes progressively older when the observer is moving away from any mid-ocean ridge
(C) is always the same on both sides of a transform fault
(D) A and C are both correct
(E) B and C are both correct
(F) none of these are correct
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Question 173 pts
In the above photo, the ice in the glass is floating such that a small portion of the ice is above the water line and a much greater amount of ice is within the water. To raise more of the ice above the water line, ___________. You can think of the ice as crust and the water as mantle. Three of the following ten answers are correct. Select only three.
Group of answer choices
the water density should be lesser than it is now
the water density should be greater than it is now
the ice density would need to be greater than it is now
the ice density would need to be lesser than it is now
remove some ice from the ice cube
add some ice to the cube
add water to the glass
remove water from the glass
make the glass larger
make the glass smaller
