EARTH SCIENCE
TECTONICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Earthquakes can only happen near volcanic eruptions, and most volcanoes occur on or near plate boundaries.
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Tectonic plates move along, against, or away from each other at their boundaries. These movements produce earthquakes.
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Many plate boundaries are bordered or covered by the ocean. Water from the ocean seeps into earthquake fault lines, softening the rock materials so that they can move and cause earthquakes.
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Seismic waves transmit through different media at different speeds. Subduction zones at plate boundaries are ideal for transmission of these waves.
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Detailed explanation-1: -Earthquake-the shaking and trembling that results from the movement of rock beneath Earth’s surface. Stress-a force that acts on rock to change its shape or volume. Volume is the amount of space an object takes up.
Detailed explanation-2: -These plates are always moving apart, bumping, or sliding past each other at about the same speed that your fingernails grow. Earthquakes usually occur where two plates are running into each other or sliding past each other.
Detailed explanation-3: -One of the many tectonic plates that make up Earth’s outer shell descends, or “subducts, ” under an adjacent plate. This kind of boundary between plates is called a “subduction zone.” When the plates move suddenly in an area where they are usually stuck, an earthquake happens.
Detailed explanation-4: -The most common are tectonic earthquakes. These occur when rocks in the earth’s crust break due to geological forces created by movement of tectonic plates.