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Lava
Misc.
Pyroclastic material
Misc. 2
Volcanoes
100
The type of lava that hardens quickly to form ropy formations.
What is Pahoehoe?
100
Caldera
What is formed when a magma chamber that supplies material to a volcano empties and its roof collapses?
100
Means "little stones"
What is lapilli?
100
A mountain that forms when molten rock is forced to the Earth's surface.
What is a volcano?
100
A type of volcano that has steep slope and narrow base.
What is a cinder cone volcano?
200
Forms when lava erupts underwater.
What is pillow lava?
200
A funnel-shaped pit that is found at the top of the central vent in most volcanoes.
What is a crater?
200
Largest pieces of pyroclastic material.
What are volcanic blocks?
200
Magma that flows onto the Earth's surface.
What is lava?
200
A type of volcano that is formed by runny lava.
What is a shield volcano?
300
Lava that has a jagged surface.
What is Aa?
300
Density of magma relative to the surface of Earth.
What is less dense?
300
Large blobs of magma that harden in the air shaped like a hand grenade.
What are volcanic bombs?
300
Makes magma thick, stiff and sticky.
What is silica?
300
The type of volcano that is formed by by explosive eruptions of pyroclastic material followed by quieter outpourings of lava.
What is a composite volcano?
400
Volcanic eruption that produces mainly lava
What is a non-explosive eruption?
400
A deep crack that forms as tectonic plates separate.
What is a rift?
400
Can cause climate change, disrupt aircraft.
What is ash?
400
Holes in the earth crust through which magma rises
What are vents?
400
Contains 75% of world's active volcanoes
What is the Ring of Fire?
500
This is formed when magma erupts from long cracks in Earth's crust and spreads evenly over large areas of Earth's surface
What is a lava plateau?
500
Places on Earth's surface that are located directly above mantle plumes.
What is a hot spot?
500
The type of eruption that produces pyroclastic material.
What is an explosive eruption?
500
Measuring small quakes, measuring slope, measuring volcanic gases, and remote sensing of temperature.
What are ways to predict volcanic eruptions?
500
A volcano made entirely of pyroclastic material, such as Paracutin, in Mexico
What is a cinder cone volcano?