Review for Mapping Earthquakes Assessment What is the process involving movement of mantle rock that is controlled directly by gravity? Mantle convection is the very slow creeping motion of Earth’s solid silicate mantle caused by convection currents carrying heat from the interior to the planet’s surface.
What is undulation or waves in the stratified rocks of Earth’s crust? Rold, in geology, undulation or waves in the stratified rocks of Earth’s crust. Stratified rocks were originally formed from sediments that were deposited in flat horizontal sheets, but in a number of places the strata are no longer horizontal but have been warped.
What is a fracture or zone of fractures between two blocks of rock that allows the blocks to move relative to each other? This movement may occur rapidly, in the form of an earthquake – or may occur slowly, in the form of creep. Faults may range in length from a few millimeters to thousands of kilometers.
What facts are true about the 2017 Earthquake in Mexico? The earthquake caused damage in the Mexican states of Puebla and Morelos and in the Greater Mexico City area, including the collapse of more than 40 buildings. 370 people were killed by the earthquake and related building collapses, including 228 in Mexico City, and more than 6,000 were injured.
What is the balance of incoming and outgoing heat on Earth is referred to as? The balance of incoming and outgoing heat on Earth is referred to as its heat budget.
What are earthquakes? An earthquake is the sudden movement or trembling of the Earth’s tectonic plates, that creates the shakes of the ground. This shaking can destroy buildings and break the Earth’s surface.
Where do earthquakes happen? Over 80% of large earthquakes occur around the edges of the Pacific Ocean, an area known as the ‘Ring of Fire’; this where the Pacific plate is being subducted beneath the surrounding plates.
What are the result of sudden movement along faults within the Earth? Earthquakes are the result of sudden movement along faults within the Earth. The movement releases stored-up ‘elastic strain’ energy in the form of seismic waves, which propagate through the Earth and cause the ground surface to shake.
What surface effect includes changes in the flow of groundwater, landslides, and mudflows? Earthquakes often cause dramatic changes at Earth’s surface.
What can do significant damage to buildings, bridges, pipelines, railways, embankments, dams, and other structures? Earthquakes
How are Earthquakes recorded by a seismographic network? Each seismic station in the network measures the movement of the ground at that site. That vibration pushes the adjoining piece of ground and causes it to vibrate, and thus the energy travels out from the earthquake hypocenter in a wave.
How are earthquakes are categorized? Earthquakes are categorized in two ways – magnitude and intensity. Magnitude indicates the severity of an earthquake using the Richter Scale, a logarithmic, instrumentally determined measurement. Magnitude rates an earthquake as a whole.
Where do earthquakes happen in Georgia? Georgia’s northwest counties, South Carolina border counties, and central and west central Georgia counties are most at risk.
When do earthquakes happen in Georgia? The Brevard Fault Line, the best-known one, runs from Blue Ridge to Marietta. The Soque River Fault follows the Sogue River in the Northeast, and Salacoa Creek is in Northwest Cherokee County.
What is the theory of plate tectonics? The theory of plate tectonics states that the Earth’s solid outer crust, the lithosphere, is separated into plates that move over the asthenosphere, the molten upper portion of the mantle.
What is the San Andreas Fault? The San Andreas Fault is a continental transform fault that extends roughly 1,200 kilometers through California.
Why Earth’s core is so hot? There are three main sources of heat in the deep earth. 1 heat from when the planet formed and accreted, which has not yet been lost. 2. frictional heating, caused by denser core material sinking to the center of the planet. 3. heat from the decay of radioactive elements.
How are folds or faults important in earthquakes? A fold is more likely to happen with flexible material and it is what causes mountains to form, whereas a fault will happen with more brittle material and is what causes earthquakes to occur.
What are the types of evidence of plate tectonics? Evidence from fossils, glaciers, and complementary coastlines helps reveal how the plates once fit together. Fossils tell us when and where plants and animals once existed. Some life “rode” on diverging plates, became isolated, and evolved into new species
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Mapping Earthquakes Assessment What is the process involving movement of mantle rock that is controlled directly by gravity?