EARTH SCIENCE
EARTHQUAKES
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Seismic waves carry the energy of an earthquake away from the focus, through the Earth’s interior, and across the surface.
|
|
|
Seismic waves carry the energy of an earthquake toward the focus, through the Earth’s interior, and across the surface.
|
|
|
During an earthquake, seismic waves move toward the focus and epicenter then move out in all directions.
|
|
|
None of the above
|
Detailed explanation-1: -Both P and S waves travel outward from an earthquake focus inside the earth. The waves are often seen as separate arrivals recorded on seismographs at large distances from the earthquake. The direct P wave arrives first because its path is through the higher speed, dense rocks deeper in the earth.
Detailed explanation-2: -The energy radiates outward from the fault in all directions in the form of seismic waves like ripples on a pond. The seismic waves shake the earth as they move through it, and when the waves reach the earth’s surface, they shake the ground and anything on it, like our houses and us!
Detailed explanation-3: -Body waves can travel through the Earth’s inner layers, but surface waves can only move along the surface of the planet like ripples on water. Earthquakes send out seismic energy as both body and surface waves. The body waves (P and S) and surface waves recorded by a seismometer.
Detailed explanation-4: -When a rupture occurs along a fault, the strain energy stored on either side of the fault is released in the form of seismic waves and heat. These seismic waves propagate away from the ruptured fault zone and through the geologic layers of rock and soil.
Detailed explanation-5: -Seismic Wave: ⚡ Seismic waves are vibrations that travel through Earth carrying the energy released during an earthquake. ⚡ They carry energy from an earthquake away from the focus, through the Earth’s interior and across the surface.