6.23: Geological Activity and Earthquakes- Challenge 3

Last updated
Save as PDF

Page ID: 5423

\( \newcommand{\vecs}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}} } \) \( \newcommand{\vecd}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash {#1}}} \)\(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\) \(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\)

1. How many seismic stations are needed to find the epicenter of an earthquake, and why?: Three, because this is the minimum number of circles that will intersect at one point.

2. To find the epicenter of an earthquake, ___ seismograms are needed.: three

3. The Richter Scale measures the magnitude of the ___ of an earthquake.: largest jolt of energy

4. An increase of one integer in the moment magnitude scale means ___.: thirty times more energy is released by an earthquake

5. In a ___ scale, each unit is an exponential increase over the previous unit.: logarithmic

6. Small earthquakes that come before large ones are known as ___.: foreshocks

7. Geologists cannot predict earthquakes, because ___.: they can't be sure when and where stress will be released along a fault.

8. Scientists can predict ___.: the region in which an earthquake will occur

9. ___ occurs when an earthquake causes sediments to saturate with water and become quicksand-like in consistency.: Liquefaction