9.0 on the Richter scale !!! |
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Caspar |
I've just read an article in the paper about the causes of the
tsunami disaster. |
Patti |
It was an earthquake under the sea, wasn't it ? |
Caspar |
That's right, but it was specifically caused by one part of the
earth's crust colliding with another deep inside the earth. |
Patti |
Is that what they call a tectonic plate ? |
Caspar |
Yes, there are lots of them. And when one slipped against the other
in this case, the resulting earthquake measured
9.0 on the Richter scale. |
Patti |
I've never heard of an earthquake of that magnitude. It's really
frightening. |