Tectonic plates drift, the crust quakes, and volcanoes erupt. Air pressure falls, storms form, and precipitation results. Learn how these powerful forces shape our air, land, water, and weather—and constantly transform our planet.
The name for such a hole is "caldera" which is a word of Spanish origin meaning "a pot" or a "cooking pot" (thing of cauldron!) - and this word is used because it resembles the shape of this hole.
Often the Calderas are filled with water forming lakes and often there is an island in the middle of the water.
<span>Coral reef with sharks
</span><span>A channel for ships is created
Battle ships sink
</span><span>Shark feed on fish living in scrap metal
Hope I helped!
~ Zoe</span>
It is called surface currents.
