The crust of Mars is believed to ____ than Earth's
a. be much thinner
b. be younger
c. contain more water
d. be more geologically active
e. be much stronger
E
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How have we been able to construct detailed maps of surface features on Venus?
A) by studying Venus from Earth with powerful telescopes B) by making computer models of geological processes on Venus C) by using radar from spacecraft that were sent to orbit Venus D) by landing spacecraft on the surface for close-up study E) by studying Venus with powerful telescopes on spacecraft that were sent to orbit Venus
A gas-filled vertical cylinder, closed at the bottom end, is fitted at the top with a piston that can move freely
The mass of the piston is 10.0 kg, and the initial height of the piston above the bottom of the cylinder is 25 cm. A mass of 8.0 kg is placed on the piston. What is the resulting height of the piston, assuming that the temperature of the ideal gas is kept constant? A) 12 cm B) 13 cm C) 14 cm D) 15 cm E) 16 cm
Which of the fields are physically impossible and why?
A. This field violates Faraday’s law. B. This field violates Gauss’s law. C. This field violates both of the above laws. D. This field is physically possible.
The following figures show a top view of Earth, sunlight, and six different positions of the Moon as it orbits Earth. Note that the distances shown are not drawn to scale. Rank each of the six lunar positions from left to right based on the amount of the Moon’s illuminated surface that is visible from Earth, from greatest to least. (If two diagrams have an equal amount of illumination as seen from Earth, put one on top of the other.)
