Volcanoes and Plates
Types of Volcanoes
Ingenous Rock Features
Miscellaneous
100
an opening in Earth that erupts gases, ash, and lava
What is a volcano?
100
a broad volcano with gently sloping sides
What is a shield volcano?
100
the largest intrusive igneous rock bodies
What are batholiths?
100
underground rock bodies that could become exposed at the Earth's surface by erosion
What are intrusive igneous rock features?
200
an opening in the Earth that results from an unusually hot area that forms volcanoes when melted rock is forced upward and breaks through the crust
What is a hotspot?
200
a steep-sided, loosely packed volcano formed when tephra falls to the ground
What is a cinder cone volcano?
200
a crack that cuts across rock layers and hardens and through which magma flows
What is a dike?
200
a volcano on one of the islands in the Sunda Straits that erupted with such force that the island disappeared
What is Krakatau?
300
an opening through which lava flows out and after many thousands or even millions of years forms a volcano
What is a vent?
300
a volcano with altenating layers formed when a cycle of lava and tephra is repeated over and over
What is a composite volcano?
300
magma that is forced into a crack parallel to rock layers and hardens
What is a sill?
300
a type of lava that forms from basaltic magma that cools as it runs down the sides of a volcano
What is pahoehoe?
400
a steep-walled depression around a volcano's vent
What is a crater?
400
bits of rock or solidified lava dropped from the air by a volcano
What is tephra?
400
a solid igneous core left behind by erosion of a volcano that has stopped to erupt
What is a volcanic neck?
400
an example of cinder cone volcano locate in Mexico
What is Paricutin?
500
places where Earth's plates move together
What are convergent plate boundaries?
500
a compound composed of the elements silicon and oxygen
What is silica?
500
a large depression that forms after a volcano collapses from an intense eruption
What is a caldera?
500
a type of basaltic magma that flows at a lower temperature and becomes stiff and moves slowly
What is aa?
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