How fast do asteroids travel in space?
a. about 2 to 4 km per minute
b. about 15 to 40 km per minute
c. about 2 to 4 km per second
d. about 15 to 25 km per second
e. about 150 to 400 km per second
ANSWER: d
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Which feature on this diagram is an arête?
A) 1, the circular depression at the head of the valley
B) 2, a lake in the upper valley
C) 3, a steep ridge
D) 4, a valley that is above the level of the main valley
If an object has kinetic energy, then it also must have
A) impulse. B) momentum. C) acceleration. D) force. E) none of the above
The asteroids in the asteroid belt are the remnants of a very large planet that formed early in solar
system history, but broke apart by impact with another large body. Indicate whether the statement is true or false.
The asthenosphere is stronger than the lithosphere
Indicate whether the statement is true or false