The atmosphere around the earth would rush off into space if the vertical pressure gradient force
were not balanced by:
a. the Coriolis force.
b. the horizontal pressure gradient force.
c. gravity.
d. the centripetal force.
e. friction.
c
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With distance from the spreading ridge, oceanic lithosphere becomes ________ and it ________
a. younger; subducts b. older; subducts c. younger; subsides d. older; subsides
The design of automobiles with fuel cells can be more flexible because they
A) do not have wheels. B) have to be so large that there is extra room for passengers and accessories. C) do not have an engine fuel combustion compartment. D) do not have to be aerodynamically constructed to have better fuel mileage.
Which seismic waves are released first during an earthquake?
A) P waves B) S waves C) L waves D) R waves
A tornado watch is issued by the National Weather Service after a tornado has been sighted in an area
Indicate whether the statement is true or false