GEOL 101 Quiz 1 Solar System
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9 Terms
What are the two most common elements in the universe?
hydrogen and helium
What is the name of the prevailing hypothesis that describes solar system formation?
The solar nebula hypothesis
What distinguishes comets from asteroids?
Comets contain a significant icy component
What are the two major sources of Earth's interior heat?
Radioactive decay and residual heat from accretion/moon formation
Which of these is a major constituent of Earth's core?
Nickel
Compared to other planets, the Earth has a relatively thick atmosphere composed of nitrogen, oxygen and argon. True or false?
False
The Oort Cloud represents the outer reaches of our solar system. True or false?
True
Identify reasons for why the outer planets retain light gasses.
They are very massive
They are far from the sun
These are diffuse clouds of gas and dust.
nebula