M A S T E R P A G E
ReviewQuestions
6.3a
1. According to geologic studies, approximately how
old is the Earth?
[a] 2 thousand years
[b] 7 thousand years
[c] 2 million years
[d] 4.54 billion years
5. Although earthquakes occur almost everywhere,
strong, damaging quakes are especially common in
the:
[a] Eastern United States
[b] Pacific Ring of Fire
[c] Mediterranean Region
[d] Great African Rift
2. All of the following people made major
contributions to our knowledge of the Earth’s physical
history and structure except:
[a] Alfred Wegener
[b] Inge Lehmann
[c] Anna Maria Alberghetti
[d] Andrija Mohoroviçic
6. Which of these statements best describes the
relationship between earthquakes and volcanoes?
[a] Earthquakes cause volcanoes.
[b] Volcanoes cause earthquakes.
[c] Volcanoes and earthquakes both occur along the
margins of Earth’s tectonic plates.
[d] Volcanoes only occur in hot countries.
3. Earthquakes are caused by:
[a] strain energy that builds up and is suddenly
released
[b] tides
[c] bad vibrations
[d] the Richter scale
7. Scientists can accurately predict earthquakes in the
short range by studying:
[a] the behavior of animals
[b] changes in radon emissions
[c] Rayleigh waves
[d] none of the above
4. Approximately how many earthquakes large enough
to be rated significant by the U.S. Geological Survey
occur worldwide during a calendar year?
[a] More than 20
[b] More than 100
[c] More than 1000
[d] More than 15,000
8. The Richter scale measures an earthquake’s:
[a] magnitude
[b] amplitude
[c] pulchritude
[d] intensity
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