Question

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Describe tectonic plates and explain how they “float” on the Earth’s surface (what do they float on and what causes their movement). (site 1)

Answer 1

Answer:

There is constant heat and radiation given off from the center of the Earth. That energy is what constantly heats the rocks and melts them. The tectonic plates are floating on top of the molten rock and moving around the planet.

Explanation:

The heat from radioactive processes within the planet's interior causes the plates to move, sometimes toward and sometimes away from each other.