How is the seismic-moment magnitude scale different from the Richter Magnitude Scale? What will be an ideal response?
The seismic-moment magnitude scale measures the total energy released by the earthquake. This takes
into account the strength of the rocks, the area of a fault along which rupture occurs, and the amount of
movement of rocks adjacent to the fault. The Richter Magnitude Scale just measures the energy
released by the largest seismic wave
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Radiometric dating is based on ____
a. the presence of fossils b. cross-cutting relationships c. spontaneous decay of radioactive elements d. superposition e. dendrochronology
The aerated zone ________.
a.) is a well-oxygenated, shallow aquifer b.) lies below the capillary fringe zone c.) pore spaces are filled with water d.) lies above the water table
The British colonized Australia by first creating _______________.
Fill in the blank(s) with the appropriate word(s).
Throughout the Late Paleozoic, Gondwana was located ____
a. at the North Pole b. in the Northern Hemisphere c. at the equator d. in the Southern Hemisphere e. spans the Northern Hemisphere and equator at the South Pole