Download Quick Quiz solutions for Chapters 8,9,10

Chapter 8 Solutions
31. When we say that liquid water is unstable on Mars, we mean that:
C- any liquid water on the surface would quickly either freeze or evaporate.
32. Mars’s seasonal winds are driven primarily by:
B- sublimation of carbon dioxide ice
33. Olympus Mons is:
A- a giant volcano
34. We can recognize the oldest surface regions of Mars by the fact that they have:
A- the most impact craters
35. Minerals in the surface rock studied by the Martian rovers seem to tell us:
A- they probably formed in water
36. Rivers in Mars
B – existed in the past but are dry today
37. Which must be true if Mars was warmer and wetter in the past:
B- Mars once had a much thicker atmosphere.
38. Which of the following fundamental properties of Mars could explain why it once
had a global magnetic field but later lost it?
A- its small size
39.Under the leading scenario, if Mars once had a much more Carbon Dioxide in its
atmosphere most of this carbon dioxide is now:
A- gone, because it escaped to space
40. The Viking experiments found:
C-some results consistent with life, but others that were inconsistent with life
Chapter 9 Solutions
25. The moons of Saturn may have large amounts of ammonia and methane ice, while
those of Jupiter do not because:
C- The greater cold at Saturn’s distance from the Sun means that ices of ammonia and
methane could condense there but not at Jupiter.
26. Which statement about synchronous rotation is true:
B- It occurs commonly as a result of tidal forces exerted on moons by their parent planet
27. Io is covered in volcanoes while Europa is covered in ice because:
C- Io is subject to stronger tidal heating than Europa
28. Which of the following is not an indication of liquid water beneath Europa’s icy
surface:
B- the moon’s average density
29. Photosynthesis is an unlikely source of energy for life in European seas primarily
because:
B- Sunlight at the distance of Jupiter is too weak
30. It’s assumed that, even if Europa has life, the total amount of that life will be small.
That’s because:
C-There are likely to be only limited sources of energy for life
31. The chances for life on Titan’s surface are considered slim, mainly because:
C – the surface temperature is far below the freezing point of water.
32. Where might we find liquid water on Titan?
B- beneath the surface near sources of “icy volcanism”
33. Why were scientists so surprised to find active geology on Enceladus?
A- because of its small size
34. Chemical disequilibrium is likely to be present at all the following places except:
B- In solid ice exposed to the extreme cold of space
Chapter 10
29. The habitable zone refers to:
C- the range of distances from a star within which water could exist in liquid form on a
suitably sized planet.
30. A planet that is not within a habitable zone cannot have:
C- abundant liquid water on its surface
31. Venus’s atmosphere has much more carbon dioxide than Earth’s because:
B- Venus lacks oceans in which Carbon Dioxide could be dissolved
32. What is the likely reason for Venus’s lack of water in any form:
C- The water was in the atmosphere, where water molecules were broken apart by
ultraviolet radiation coming from the Sun.
33. If Earth were to be moved to Venus’s orbit, it would probably:
C- Suffer a runaway greenhouse effect and become even hotter than the Sun
34. The inner boundary of the Sun’s habitable zones today is:
B- Between Venus and Earth
35. As the Sun ages, the habitable zone will:
A- move outward and grow wider
36. Which of the following could cause Earth to become uninhabitable in about 1 billion
years?
A- a moist greenhouse effect
37. Global warming means that:
A- Earth’s average temperature is increasing
38. The current concentration of atmospheric carbon dioxide on Earth is:
A – higher than the concentration at any time during the past 650,000 years