which of the following best explains why earth is tectonically active?earths solid surface layer rotates…

which of the following best explains why earth is tectonically active?earths solid surface layer rotates more rapidly than the layers beneath it.areas of earths solid surface layer are under great pressure from ocean water.earths solid surface layer sits on a layer of semimolten rock that slowly flows.areas of earths solid surface layer are thicker and so heavier than other areas.

which of the following best explains why earth is tectonically active?earths solid surface layer rotates more rapidly than the layers beneath it.areas of earths solid surface layer are under great pressure from ocean water.earths solid surface layer sits on a layer of semimolten rock that slowly flows.areas of earths solid surface layer are thicker and so heavier than other areas.

Answer

Brief Explanations:

Tectonic activity on Earth is driven by the movement of the solid outer crust (lithosphere) which rests atop the semi-molten, slowly flowing asthenosphere. The slow convection and flow of this semi-molten layer causes the overlying tectonic plates to move, leading to earthquakes, volcanoes, and other tectonic events. The other options do not address the core mechanism of tectonic activity: differential rotation does not drive plate motion, ocean pressure is negligible for large-scale tectonics, and crust thickness differences are a result, not a cause, of tectonic activity.

Answer:

Earth's solid surface layer sits on a layer of semimolten rock that slowly flows.