Why is the rock cycle endless?

Question

between metamorphic; sedimentary; igneous rocks...

Answer 1

Any substance never disappears; it just changes form.

Answer 2

Metamorphic, sedimentary and igneous rocks all break down via rain/frost/ice to become sedimentary rocks.

All the different rocks move and shift over the surface of the land via the movement of the great plates, which move in tiny increments as earthquakes.

Most of Earth's rocks are pulled down into the earth as new rocks are forced upwards via volcanoes, mid-oceanic ridges and the formation of new islands (Hawaii and Iceland each have named but still underwater islands being formed now).

If the rocks are pulled deeply enough, the arrangement of their basic minerals changes and they become metamorphic rocks befor ethey are again thrust to the surface.

The rock cycle is endless because it's powered by the heat at the center of our world. Certainly, the rock cycle will stop when our world is enveloped in the sun in 4.5 billion years. In truth, it'll probably stop long before that because it'll cool down enough inside the Earth so that plate movement stalls and then stops.

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Allen Ginsberg's Restatement of the Three Laws of Thermodynamics:
First law of thermodynamics - "You can't win."
Second law of thermodynamics - "You can't break even."
Third law of thermodynamics - "You can't quit." (Because you can never get to absolute zero.)

Answer 3

All rocks come from the molten magma beneath the earth's crust. There are ridges in the bottom of the ocean where two tectonic plates meet where magma comes up through the crust and cools down to become rock. This rock is new but it will be recycled after a few hundred million years.
Rocks on continents are older than rocks in the ocean because the continental rock doesn't get recycled as often.

Answer 4

Because plate tectonics, volcanoes, earthquakes, weathering, and erosion are continuous and so, hence, the rock cycle.