The daytime surface temperature of Mercury is higher than Earth's ...

[formula1]

The daytime surface temperature of Mercury is higher than Earth's Moon's surface temperature because
 
  a. clouds shield the Earth's Moon during the day.
  b. Mercury is farther from the Sun than the Earth's Moon.
  c. Mercury is closer to the Sun than the Earth's Moon.
  d. the atmosphere of the Earth's Moon has a strong greenhouse effect.

Question 2

Whether or not a planet like Mercury can hold a particular gas in its atmosphere depends on that planet's
 
  a. ice cap.
  b. craters.
  c. escape velocity.
  d. its distance from the Sun as manifested in the temperature of the atmosphere.
  e. escape velocity and its distance from the Sun as manifested in the temperature of the atmosphere.

[Sweetkitty24130]

Answer to Question 1

c
RATIONALE: Compare temperatures on p. 382 and distances from the Sun in Table A-10.

Answer to Question 2

e

[formula1]

Excellent

[aruss1303]

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