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1.
How many small earthquakes occur each year?
2.
The outer shell of Earth, consisting of moving plates of crust, is called what?
3.
Earth's outer shell is made of how many large, moveable plates?
4.
What mountain system began to form 40 million years ago when the Indian-Australian Plate collided with the Eurasian Plate?
5.
How fast do tectonic plates move?
6.
In what year did the Great San Francisco earthquake occur?
7.
The safest place to be during an earthquake is usually where?
8.
An earthquake of magnitude 7.0 on the Richter scale releases how many times as much energy as an earthquake of magnitude 6.0?
9.
Which measuring scale describes large earthquakes with the most accuracy?
10.
The interior of Earth generates heat energy through which process?
