7th Grade Inside Earth Chapter 2 Sec. 2
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| earthquake | the shaking and trembling that results from the movement of rock beneath Earth's surface
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| focus | the area beneath Earth's surface where rock that is under stress breaks triggering an earthquake
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| epicenter | the point on the surface directly above the focus
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| P waves | seismic waves that compress and expand the ground like an accordion
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| S waves | seismic waves that vibrate from side to side as well as up and down
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| surface waves | waves that move slower than P and S waves but produce severe ground movements
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| Mercalli scale | a scale to rate earthquakes according to the level of damage at a given place
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| magnitude | a number geologists assign to an earthquake based its size
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| Richter scale | rating of an earthquake's magnitude based on the size of its seismic waves
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| seismograph | instrument that measures seismic waves
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| moment magnitude scale | rating system that estimates the total energy released by an earthquake
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| liquefaction | when the earthquake's violent shaking suddenly turns loose soft soil into liquid mud
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| aftershock | an earthquake that occurs after a larger earth quake in the same area
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| tsunami | a large wave caused by an earthquake
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| base isolated building | building designed to reduce the amount of energy that reaches the building during an earthquake
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
Karen Copanic
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