1. How long did the period of intense bombardment
that cratered much of the solar system last?
2. What does the origin of our moon have
to do with celestial impacts? Describe what scientists think might
3. List and describe or illustrate some
of the different types of impact craters found on Earth and the moon.
4. What are some shock effects produced
by meteorite collisions?
5. What is the K-T boundary and what does
it have to do with meteor impacts?
6. Describe how debris from a major impact
could be spread around the globe.
7. What determines whether a meteor or
comet will distribute most of its energy in an impact with the surface
or the atmosphere?
8. The last paragraph of this article alludes
to probabilities. You may remember a discussion by a seismologist
on a video we watched earlier this semester. He warned that a major
earthquake may hit the west coast in the next 35 years. He was concerned
that people saw this as a prediction of an earthquake 35 years from now,
when, in fact, the “Big One” could be tomorrow. What does the information
in this article (particularly the graph) tell us about the likelihood of
a major meteor impact in our lifetimes?
|Back to the Geology index|