what is the most important factor that determines the thickness, and therefore strength, or the lithosphere?
which internal energy source produces heat by converting gravitational potential energy into thermal energy
which internal energy source is the most important in continuing to heat the terrestrial planets today?
heat escapes from a planet”s surface into space by thermal radiation. Planets radiate almost entirely in the wavelength range of the
which of the following best describes why the smaller terrestrial worlds have cooler interiors than the larger ones?
were formed by impacts that occurred after those that formed most of the craters in the lunar highlands
The Caloris Basin on Mercury covers a large region of the planet, but few smaller craters have formed on top of it. From this we conclude that
the presence of vast canals discovered in the late 1800s by Giovanni Schiaparelli and mapped by Percival Lowell
Which two geological processes appear to have been most important in shaping the present surface of venus?
continental crust is made from remelted seafloor crust and therefore only the lower-density material rises to form it
How long, approximately, do geologists estimate it takes for the entire seafloor to be replaced due to plate tectonics?
which of the following regions was the result of plumes of hot mantle rising in a hot spot within a plate?
suppose we use a baseball to represent earth. on this scale, the other terrestrial worlds (Mercury, Venus, the Moon and Mars) would range in size approximately from that of
from center to surface, which of the following correctly lists the interior layers of a terrestrial world?
when their interiors were molten, denser materials sank toward their centers and lighter materials rose toward their surfaces
(1) heat deposited as the planets were built from planetesimals; (2) heat deposited as the planets underwent differentiation; (3) heat released by radioactive decay
what observational evidence supports the idea that Mercury once shrank by some 20 kilometers in radius?
which of the following does not provide evidence that Mars once had abundant liquid water on its surface?
the presence of canali, discovered in the late 1800s by Giovanni Schiaparelli and mapped by Precival Lowell
Based on its surface features, the most important event on Venus in the past billion years or so was
a global "repaving" that erased essentially all the surface features that had existed earlier
the reason that small planets tend to lose interior heat faster than larger planets is essentially the same as the reason that
suppose we had a device that allowed us to see Earth”s interior. If we looked at a typical region of the mantle, what would we see happening?
Recent evidence suggests that Mars once had a global magnetic field. Assuming this is true, which of the following could explain why Mars today lacks a global magnetic field like that of Earth?
which of the following most likely explains why Venus does not have a global magnetic field like Earth?
You discover an impact crater that is 10 kilometers across. Which of the following can you conclude?
Most of the Moon”s surface is densely covered with craters, but we find relatively few craters with lunar maria. What can we conclude?
early in their histories, they suffered many impacts and experienced some volcanism and tectonics, but they now have little geological activity at all
many scientists suspect that Venus has a stronger and thicker lithosphere than Earth. If this is true, which of the following could explain?
the high surface temperature that has "baked out" all the liquid water from Venus”s crust and mantle
all of the following statements about Venus are true. Which one offers evidence of a global repaving about a billion years ago?
Venus has relatively few impact craters and these craters are distributed fairly evenly over the entire planet
what are the two geological features that appear to set Earth apart from all the other terrestrial worlds?
Seafloor crust is younger than continental crust, so it has had less time in which to suffer impacts
Continental crust is made as the lowest-density seafloor crust melts and erupts to the surface near subduction zones
Based on all we know about the terrestrial worlds, what single factor appears to play the most important role in a terrestrial planet”s geological density?
The choices below describe four hypothetical planets. Which one would you expect to have the hottest interior? (Assume the planets orbit a star just like the Sun and that they are all the same age as the planets in our solar system.)
the choices below describe four hypothetical planets. which one”s surface would you expect to be most crowded with impact craters? (Assume the planets orbit a star just like the Sun and that they are all
The choices below describe four hypothetical planets. Which one would you expect to have the most features of erosion? (Assume the planets orbit a star just like the Sun and that they are all the same age as the planets in our solar system.)
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