Can metamorphism, caused solely by elevated temperature, occur without the presence of magma? Why or why not?
What will be an ideal response?
Answer: Yes, by burial metamorphism. As rocks are buried, they slowly heat up (due to the geothermal gradient) until they are in equilibrium with the crustal temperatures surrounding them. This process can alter the mineralogy and texture of the rock.
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Photons are emitted when a bound electron jumps up to a(n) ________ energy state
A) lower B) higher C) zero D) infinite
What determines the time of flight (the time it takes to reach the ground) of a ball rolling off a table?
A. The initial horizontal velocity of the ball. B. The height of the table. C. The ball will always reach the ground in the same amount of time, regardless of height or velocity.
The electrical force between any two charged objects is
A. always balanced by the action-reaction forces. B. dependent on the sign of the charge on each object. C. always attractive. D. always repulsive.
A car passes a dip in the road, going first down, then up. At the very bottom of the dip, when the car’s instantaneous velocity is passing through horizontal, how does the magnitude of the normal force on the car compare to the magnitude of the car’s weight?
A. 
B. 
C. 
D. 
E. We do not have enough information to answer.