Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
GEO Ch 16
| Question | Answer |
|---|---|
| Both P waves and S waves can pass through ___ | solid rock |
| Earthquake waves propagate most rapidly through ___ | igneous rock |
| Richter scale values above 7 are not accurate. The ___ scale is a more objective method of measuring the energy of a large earthquake | moment magnitude |
| The greatest loss of life in the 1964 southern Alaska earthquake was from ____ | tsunamis |
| _____ would be associated with Benioff zones | All the answers are correct |
| A ___ plots seismic-wave arrival time against the distance | travel-time curve |
| The point within the earth where seismic waves first originate is the ____ | focus |
| _____ waves tend to be incredibly destructive to buildings because they produce much ground movement and take a long time to pass | Rayleigh |
| _____ are seismic waves that travel through the Earth's interior, spreading out from the focus in all directions | Body Waves |
| On the modified Mercalli intensity scale the maximum value is _____ | XII |
| _____-waves are the slowest body waves | S |
| A _____ is the first wave to arrive at a recording station following an earthquake | P-wave |
| ___ earthquakes probably occur along older faults that are no longer at plate boundaries, for example the New Madrid Missouri earthquakes of 1811-1812 | Intraplate |
| In the elastic rebound theory, earthquakes are caused by the sudden release of progressively stored ___ in rocks | strain |
| A ____ is a seismic sea wave | tsunami |
| Perhaps 90 percent of the destruction in the 1906 San Francisco earthquake was caused by ___ | fires |
| Although large earthquakes are rare in the central and eastern United States, when they do occur they tend to be very destructive because | the crust there is cool and brittle |
| Rupture begins at the ____ and then spreads rapidly along the fault plane | focus |
| ____ are earthquake waves that cause the most property damage | Surface waves |
| Faulting and earthquakes are examples of ______ | brittle behavior |
| The most important concentration of earthquakes by far is _____ | the Circumpacific belt |
| The paper record of an earthquake is a ___ | seismogram |
| The effects of ground motion caused by an earthquake do not include | volcanism |
| _____ are the waves of energy produced by an earthquake | Seismic |
| _____ maps are useful for assessing how different areas respond to seismic waves and provide valuable information for earthquake planning | Intensity |
| _____ focus earthquakes are the most common | Shallow |
| Surface Waves _____ | produce most of the damage to buildings during earthquakes |
| _____ can occur when water-saturated soil turns from a solid to a liquid as a result of an earthquake | Liquefaction |
| Deep rocks behave as ____ material under stress rather than breaking | ductile |
| ___ stations are the minimum needed to determine the location of an earthquake epicenter | Three |
| The time interval between the first arrival of P-waves and the first arrival of S-waves _____ with distance from the focus of an earthquake | increases |
| For most of the 20th century earthquake magnitude was reported on the _____ scale, a scale that has never exceeded a magnitude 8.6 | Richter |
| A series of earthquakes that occurred near ____ in 1811-1812 were the most widely felt earthquakes to occur in recorded history | New Madrid, Missouri |
| ____ is a measure of an earthquake's effect on people and buildings | Intensity |
| Medium and deep focus earthquakes occur along _____ | convergent plate boundaries only |
| The ____ is the most famous example of a right lateral transform fault | San Andreas Fault in California |
| One suggested cause of deep focus earthquakes is _____ | collapse of minerals into denser forms |
| Tsunami waves may move faster than _____ | 800 km/hr |
| Which of the following is not used to aid in earthquake prediction | tsunamis |
| Deep focus earthquakes occur at a maximum depth of _____ | 670 km |
Created by:
tbaum25