Calderas are some of the most spectacular features on Earth. They are large volcanic craters that form by two different methods: 1) an explosive volcanic eruption; or, 2) collapse of surface rock into an empty magma chamber.The image at right is a satellite view of one of the most famous calderas-Crater Lake in Oregon.enturies of rain and snow filled the caldera creating Crater Lake. With a depth of 1932 feet (589 meters), Crater Lake is the deepest lake in the United States and the seventh deepest lake in the world. Collapse calderas form when a large magma chamber is emptied by a volcanic eruption or by subsurface magma movement.
to be physically sick meaning, to be physically sick definition | English Cobuild dictionary. physical. 1 adj Physical qualities, actions, or things are connected with a person's body, rather than with their mind. ...the physical and mental problems caused by the illness..., The attraction between them is physical.
disease. noun disÂ·ease \di-ËzÄz\. Tweet. : an illness that affects a person, animal, or plant: a condition that prevents the body or mind from working normally.: a problem that a person, group, organization, or society has and cannot stop.efinition of DISEASE for Kids. : a change in a living body (as of a person or plant) that prevents it from functioning normally: sickness.