OBJECTIVE LIFE SCIENCE
EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following is the driving force for the mechanism of plate tectonics.
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Conduction of heat in the Earth’s crust causes plates to move.
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Convection currents in Earth’s mantle cause the plates to move.
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Radiation of heat from Earth’s core causes the plates to move.
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Radiation from the sun causes Earth’s plates to move.
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Explanation:
Detailed explanation-1: -Convection currents drive the movement of Earth’s rigid tectonic plates in the planet’s fluid molten mantle.
Detailed explanation-2: -The basic driving force for plate movement is convection in the Earth’s mantle. Convection occurs when hotter material rises, cools, and then sinks back down, carrying with it tectonic plates that ride atop it. This convective flow in the Earth’s mantle is thought to be the main force driving plate tectonics.
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