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All the world is 'floating' as it were on a number of so-called tectonic plates that very slowly move and regularly collide. The lines where they border each other we call 'faults'. When they do collide, one plate slides underneath or alongside the other. That is not a gradual process: the other plate does not yield easily so enormous pressure first builds up, and then - when the pressure has become irresistible - the plate moves forward with a shock. That's in simple terms when you get an earthquake.
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What is the relationship between faults and earthquakes?
Faults are fractures in the Earth's crust where rocks have moved past each other. When the rocks along a fault suddenly shift, it can cause an earthquake. The movement along faults is what generates the energy that produces earthquakes.
How faults produce earthquakes?
Faults DO NOT produce earthquakes, faults are produced by earthquakes. This means that earthquake loci are centered on and along faults. The energy released by an earthquake is the stress energy built up as a result of plate tectonic forces.
What does faults mean?
Normal faults are when you have hanging walls that slide down relative to and below the footwall. Dip-slip faults are normal faults.
What two factors do geologists consider when determining earthquake risk for a region?
By locating where faults are active and where past earthquake have occurred.
What are the huge rips in the ground called after an earthquake?
Faults
Why do geologists collect data on friction along the sides of faults?
Geologists collect data on friction along the side of faults so that they can predict how much pressure is applied on the faults so they can predict how strong the earthquake is.
How does the earthquake data confirm that the fracture zones are Transform faults as opposed to transcurrent faults?
I'm in your NATS class.
What is something produced by movements of faults around the lithosphere?
Earthquake
What is the measurement of an earthquake's strength based on seismic waves and movements along faults?
An earthquake's magnitude is a measure of its strength.
When does an earthquake occur along a fault?
plates of the earth crash into each other along faults causing an earthquake
What is the cause of shaking during an earthquake?
Shaking during an earthquake is primarily caused by the sudden release of energy in the Earth's crust due to the movement of tectonic plates along faults. When stress builds up along these faults over time, it can eventually exceed the strength of the rocks, leading to a rapid slip that generates seismic waves. These waves propagate through the Earth, causing the ground to shake. The intensity and duration of the shaking depend on various factors, including the earthquake's magnitude, depth, and distance from the epicenter.
Why not all movement along faults produce earthquakes?
Faults DO NOT produce earthquakes, faults are produced by earthquakes. This means that earthquake loci are centered on and along faults. The energy released by an earthquake is the strain energy built up as a result of plate tectonic forces. Some faults move easily and thus no strain energy builds up.
