Which of the following is true of Saturn's moon Enceladus?
A) It is rich in organic molecules.
B) It has been warmed by tidal heating.
C) It has plentiful liquid water necessary for the rise of life.
D) It is airless so any form of water would boil away into space.
B
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A temperature inversion occurs when the upper layers of air are
A) warmer than the lower regions of air. B) cooler than the lower regions of air. C) at the same temperature as lower regions of air.
At what phase would you expect to find extremely high and low tides?
A) first and third quarter B) full moon C) new moon D) both new and full moons E) Moon phases do not impact the tides.
Astronomers measured the location of the Sun in the Milky Way Galaxy by
A. counting the number of stars. B. plotting the position of O and B stars. C. plotting the position of globular star clusters. D. plotting distribution of water molecules.
The figure shows a steady electric current passing through a wire with a narrow region. What happens to the drift velocity of the moving charges as they go from region A to region B and then to region C?
A) The drift velocity decreases from A to B and increases from B to C. B) The drift velocity increases all the time. C) The drift velocity remains constant. D) The drift velocity decreases all the time. E) The drift velocity increases from A to B and decreases from B to C.