Which type of volcano is a depression which forms when a large volcano collapses or is blown away?
Calderas
Calderas: A caldera is a bowl-shaped depression formed when a volcano collapses into the void left when its magma chamber is emptied.
Which type of the volcanoes is the most explosive and tend to collapse on themselves?
Calderas are the most explosive volcanoes. They are usually so explosive that when they erupt they tend to collapse on themselves rather than building any tall structure. The collapsed depressions are called calderas. Flood Basalt Provinces are volcanoes outpour highly fluid lava that flows for long distances.
Are volcano eruptions increasing?
The Global Volcanism Program does not see any evidence that volcanic activity is actually increasing. The apparent increase in activity reflects increases in populations living near volcanoes to observe eruptions and improvements in communication technologies to report those eruptions.
What do you call a large crater formed by the collapse of a volcano?
A caldera is a large depression formed when a volcano erupts and collapses. As a result, the sides and top of the volcano collapse inward. Calderas vary in size from one to 100 kilometers (0.62 to 62 miles) in diameter. Some calderas form a lake as the bowl-shaped depression fills with water.
What type of volcano will most likely form when an eruption takes place with explosive force and layers of ash accumulate?
Composite volcanoes are tall, steep cones that produce explosive eruptions. Shield volcanoes form very large, gently sloped mounds from effusive eruptions.
Why is volcanic activity increasing?
The apparent increase in activity reflects increases in populations living near volcanoes to observe eruptions and improvements in communication technologies to report those eruptions. Graph showing the number of volcanoes reported to have been active each year since 1800 CE.