EARTH SCIENCE
EARTHQUAKES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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movement of the planets, bird migration, air temperture
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barometric pressure, ocean currents, glacial patterns
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animal behavior, environmental changes, weather pattersn
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seismic gaps, foreshocks, rock changes
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Detailed explanation-1: -Earthquake forecasts are built on observations of past earthquake activity, which may stretch back decades, centuries or even thousands of years. These observations are analysed and modelled, and we use our understanding of the physics of earthquake occurrence to determine the chances of future seismic activity.
Detailed explanation-2: -Seismology is the scientific study of earthquakes and related phenomena, such as volcanic eruptions. Earthquakes occur when the tectonic plates that make up the Earth’s crust shift and release energy in the form of waves.
Detailed explanation-3: -Seismic gaps-A seismic gap is a zone along a tectonically active area where no earthquakes have occurred recently, but it is known that elastic strain is building in the rocks. If a seismic gap can be identified, then it might be an area expected to have a large earthquake in the near future.
Detailed explanation-4: -An earthquake prediction must define 3 elements: 1) the date and time, 2) the location, and 3) the magnitude.