Reading Overview for Exam 3
Chapter 8: Earth as a Planet
Chapter 9: Cratered Worlds (the Moon and Mercury)
mare (plural: maria)
Four hypotheses of Moon's origin:
Chapter 10: Earthlike Planets (Venus and Mars)
Venus's atmosphere composition
runaway greenhouse effect
coronae (on Venus)
Mars's atmosphere composition
Mars's volcanoes and canyons
Water on Mars
NOTE: There will be no short-answer question on exam 3. The following questions may provide the basis for some multiple-choice questions, however.
How do we know what the Earth's core and mantle are made of?
What is the source of Earth's magnetic field?
Why are we concerned about increases in greenhouse gases in Earth's atmosphere?
How could you find the relative ages of the Moon's maria and highlands?
Why does the Moon not have an atmosphere?
How does the giant impact hypothesis explain the Moon's lack of iron? Of volatiles?
What evidence can you cite that Mercury has a partially molten, metallic core?
List several ways that Venus, Earth, and Mars are similar.
List several ways that Venus, Earth, and Mars are different.
What evidence shows that Venus has been resurfaced within the last billion years?
What is the runaway greenhouse effect?
What evidence do we have that there was liquid water on Mars in the past?