Answer: Volcano
Explanation: When the heat from the Earth's interior is very high at certain points and at the boundary areas of the plates in the interior, then the rocks become hot enough to begin to melt. As molten rocks and material in the Earth's interior have a lower density than the solid surrounding rocks, these molten rocks or magma begin to be displaced to the surface by the pressure of the surrounding solid rocks. Thus the molten material, rocks and other materials come out to the surface and erupt on the surface in the form of volcanoes. This can also happen below the surface of the water, so the magma erupts into the bottom of the sea or water body.
