Vocabulary
What is the Ring Of Fire?
A major belt of volcanoes.
What is a cinder cone volcano?
Cone-shaped hill or small mountain.
Where are most volcanic belts located?
Volcanic belts form along the boundaries of Earth's plates.
What are the 5 main parts of a volcano?
Magma chamber, pipe, vent, lava flow, crater.
What are the 3 types of volcanoes?
Shield, composite, and cinder cone.
What is lava flow?
The spread of lava as it pours out of a vent.
What are shield volcanoes?
Gently sloping mountain.
Where does a volcano form?
A volcano forms above a hot spot when magma erupts through the crust and reaches the surfaces.
What is an explosive eruption?
An eruption that is high in silica and very thick and sticky.
How is a lava plateau created?
Lave can flow out of several long cracks in the area. The thin, runny lava floods the area and travels far before cooling and solidifying. After millions of years, repeated floods of lava can form high, level plateaus.
What is a batholith?
A mass of rock formed when a large body og magma cools inside the crust.
What is a dormant volcano?
A volcano that is expected to awaken in the future and become active.
When does magma become lava?
When magma reaches the surface, it is called lava.
What is a quiet eruption?
An eruption that is low in silica and thin and runny.
What landforms does magma create?
Volcanic necks, dikes, sills, batholiths, and dome mountains.
What is a volcano?
A mountain that forms in Earth's crust when molten material, or magma, reaches the surface.
What is an extinct volcano?
A volcano that is unlikely to ever erupt ever again.
What happens during subduction?
What is another name for thin and runny lava?
Pahoehoe
What materials are volcanic landforms mostly made of?
Lava, ash, and other materials.
What is pyroclastic flow?
The mixture of hot gases, ash, cinders, and bombs that flow down the sides of a volcano when it erupts explosively.
What is a crater?
A bowl-shaped area that may form at the top of a volcano around the central vent.
What creates a island arc?
The resulting volcanoes sometimes create a string of islands called an island arc.
Extinct, dormant, and active.
What forces strip away the layers above the hardened magma and expose it?
Flowing water, ice, and wind.