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I think this article will be about how dangerous they are and how to be prepared as well as knowing what will come.

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- The first earthquake
-  Rethinking liquefaction
- The second earthquake
- Interpreting the data
- Learning lessons

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By studying the causes and impact of earthquakes, scientists now involved in the possess involved.

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This was caused by movement along fault lines west of the city beneath the Canterbury Plains.

Liquefaction is a phenomenon in which the strength and stiffness of a soil is reduced by earthquake shaking or other rapid loading. Liquefaction and related phenomena have been responsible for tremendous amounts of damage in historical earthquakes around the world.

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The Richter scale is a standard scale used to compare earthquakes. It is a logarithmic scale, meaning that the numbers on the scale measure factors of 10. So, for example, an earthquake that measures 4.0 on the Richter scale is 10 times larger than one that measures 3.0.

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very brief description of the increase in magnitude for friends & family in Christchurch

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Christchurch Central, Christchurch, New Zealand.

Cathedral Square, Christchurch Central, Christchurch 8011, New Zealand
https://www.google.com/maps/d/u/0/edit?mid=1XpQrqk-Dmlhr6-ayyoXRAKCdrQ0&ll=-43.52989883091977%2C172.6215349195129&z=17

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What is happening in the image? In the image it was seconds after the 2011 earthquake and you can see the damage it prevented.
What evidence supports the description of the photo? -

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Before a earthquake and during a earthquake.

Soil liquefaction describes a phenomenon whereby a saturated or partially saturated soil substantially loses strength and stiffness in response to an applied stress, usually earthquake shaking or other sudden change in stress condition, causing it to behave like a liquid.

matter that settles to the bottom of a liquid; dregs.

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Graph- In book

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What do the diagrams on slide 5 show? I think it show the trampoline effect.  What three factors caused the intensity of the earthquakes?
1.it forces the ground upwards. The weaker layer is faster moving then rock.
2.When the top layer falls back down, it slaps the lower layer in a similar way to an object landing on a trampoline.
3.the solid layer forces the top layer up wards again this is why it is caused a trampoline effect.

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Which of the two earthquakes was worse and why? 2010 earthquake was bigger, This was caused  by the movement along fault lines west of the city. It was a 7.1 and the second earthquake was a 6.3. What was the size difference between the two earthquakes? 0.8 difference.  On the Richter Scale diagram, why are the levels colored differently, do you think? I think it is so it can show how light color means a light earthquake and a dark color like red is way more dangerous.