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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 _________.
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From center to surface, which of the following correctly lists the interior layers of a terrestrial world?
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astro reading quiz 7

QuestionAnswer
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 _________. a golf ball to a baseball
From center to surface, which of the following correctly lists the interior layers of a terrestrial world? core, mantle, crust
What do we mean when we say that the terrestrial worlds underwent differentiation? Differentiation therefore occurred very early in each planet's history, before it cooled enough for much of its interior to solidify.
A terrestrial world's lithosphere is ________. a layer of relatively strong, rigid rock, encompassing the crust and part of the mantle
The two most important processes in heating the interiors of the terrestrial worlds are: (1) Heat deposited by the process of formation; (2) heat released by radioactive decay.
Which of the following is an example of convection? Warm air expanding and rising while cooler air contracts and fall.
In general, which things below are affected by a magnetic field? Charged particles or magnetized materials (such as iron).
What is a magnetosphere? a region of space around a planet in which the planet's magnetic field can trap charged particles
The processes responsible for virtually all surface geology are _________. Virtually all surface features trace to one or more of these four processes.
In the context of planetary geology, what do we mean by outgassing? the release by volcanism of gases that had been trapped in a planetary interior
Which of the following is not an example of tectonics? The gradual disappearance of a crater rim as a result of wind and rain.
Which of the following is the most basic definition of a greenhouse gas? a gas that absorbs infrared light
Suppose we represent Earth with a basketball. On this scale, most of the air in Earth's atmosphere would fit in a layer that is _________. about the thickness of a sheet of paper
Which of the following best describes the lunar maria? relatively smooth, flat plains on the Moon
Why does the Moon have a layer of "powdery soil" on its surface? It is the result of countless tiny impacts by small particles striking the Moon.
What observational evidence supports the idea that Mercury once shrank by some 20 kilometers in radius? the presence of many long, tall cliffs
Olympus Mons is ______. a huge volcano on Mars
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 Percival 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
What do we mean by a runaway greenhouse effect? a greenhouse effect that keeps getting stronger until all of a planet's greenhouse gases are in its atmosphere
On average, how fast do the plates move on the Earth? a few centimeters per year
How does seafloor crust differ from continental crust? Seafloor crust is thinner, younger, and higher in density.
In the context of plate tectonics, what is a subduction zone? A place where a seafloor plate is sliding under a continental plate.
What is the importance of the carbon dioxide (CO2) cycle? It regulates the carbon dioxide concentration of our atmosphere, keeping temperatures moderate.
Earth has been gradually warming over the past few decades. Based on a great deal of evidence, scientists believe that this warming is caused by _____. human activities that are increasing the concentration of greenhouse gases in Earth's atmosphere
Based on all we know about the terrestrial worlds, what factor appears to play the most important role in a terrestrial planet's geological destiny? its size
Created by: jenmov
 

 



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