Asteroids which could possibly collide with the Earth at some time in the future are known as
A) killer asteroids
B) Earth-crossing asteroids
C) Armageddon asteroids
D) potentially hazardous asteroids
Question 2Mineralogical analysis of a rock can tell us
A) the detailed geological history of the rock
B) what the rock is made of
C) when the rock formed
D) the temperature and pressure conditions under which it formed
Question 3In order to double the average speed of the molecules in a given sample of gas, the temperature (measured in Kelvins) must
A) quadruple.
B) reduce to one-fourth its original value.
C) triple.
D) double.
E) reduce to one-half its original value.
Question 4When soup gets cold, it often tastes greasy. This greasy taste seems to be associated with oil spreading out all over the surface of the soup, instead of staying in little globules. This is readily explained in terms of
A) the Bernoulli effect.
B) the decrease in the surface tension of water with increasing temperature.
C) Archimedes Principle.
D) the increase in the surface tension of water with increasing temperature.
E) Poiseuille's law.
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