Term
| A force that acts on rock to change its shape or volume is called |
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Term
Which type of wave arrives first as a seisomgraph? |
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Definition
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Term
| Anticlines and synclines are two types of? |
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Definition
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Term
| The point beneath Earth's surface where the crust breaks and triggers an earthquake is called the? |
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| Which stress force pulls on the crust and stretches rock? |
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Definition
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Term
| A break in the crust where slabs of rock slip past each other is a? |
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Term
| An instrument used to measure and record ground movenments during an earthquake is called a |
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Term
| What process occures when an earthquake's shaking turns moisture rich loose soil into mud/quicksand? |
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Definition
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Term
| Most of the worlds earthquakes occure |
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Definition
| at areas near techtonic plate boundaries |
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Term
| The type of stress force that causes a strike-slip fault is |
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Term
| Which area of the United States has the highest earthquake hazard level? |
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Term
| The San Andreas Fault is California is what type of fault? |
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| The strongest earthquake ever recorded occured in what country? |
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| What state ranks #1 in the number of earthquakes per year? |
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Definition
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Term
| Using readings from seismographs, how many stations are needed to locate the epicenter of an earthquake? |
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Definition
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Term
| Typically, where do the strongest earthquakes occur? |
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Definition
| at convergent boundaries where there are subduction zones |
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Term
| Stress builds along a strike-slip fault and Earth's crust bends and stretches. Eventually the stress becomes too great and each side of the fault slips past each other. During the slip, the stretched part of Earth's crust snaps back to its original shape creating waves of energy. What is this process called? |
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Definition
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Term
| The magnitude of an earthquake is a direct measure of what? |
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Definition
| how much energy it releases |
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Term
| Which of the following scales measures the movenment along the fault during an earthquake? |
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Definition
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Term
| What does the Mercalli Scale measure? |
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Definition
| The amount of damage caused by an earthquake |
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Term
| What type of seismic wave is the most destructive to buildings and structures? |
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Definition
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Term
| What is the purpose of a seismograph? |
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Definition
- to record seismic waves
- to help calculate an earthquakes magnitude on the richter scale
- to hlep find the location of an earthquakes epicenter
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Term
| What does the Richter Scale measure? |
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Definition
| the magnitude of an earthquake based on the seismogram recordings. |
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Term
| What are some characteristics of P-waves? |
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Definition
- fastest seismic wave
- compresses the ground back and forth as it moves
- can travel through solid and liquid layers of Earth
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Term
| What type of seismic wave is unable to travel through the liquid outer core? |
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Definition
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Term
| What instruments are used to monitor movenment along faults? |
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Definition
- GPS satellite
- tiltmeter
- laser-ranging device
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Term
| Stress will build until an earthquake occurs if friction along the fault is __________. |
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Definition
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