Vocabulary
Volcanic Landforms
Pyroclastic Material
Lava
Eruptions
100
This is a vent or fissure in the Earth's surface through which magma and gases are expelled .
What is a volcano?
100
cinder cone volcanoes, shield volcanoes, composite volcanoes, lava plateaus, craters and calderas are all types of
What is volcanic landforms?
100
large blobs of magma that harden in the air
What is volcanic bombs?
100
This type of lava ours out quickly and forms a brittle crust. The crust is torn into little jagged pieces as molten lava flows underneath.
What is Aa?
100
These two things can cause magma to build up and have more pressure so they cause explosive eruptions
What are silica and water?
200
Dust sized particles that erupt from a volcano and can reach the upper atmosphere and circle the Earth for years.
What is ash?
200
built of layers of lava released from repeated nonexplosive eruptions..has gentle sloping sides
What is shield volcano?
200
llittle stones..pebblelike bits of magma that hardened before they hit the ground
What is lapilli
200
This lava flows slowly and looks glassy with rounded wrinkles.
What is pahoehoe?
200
Liquid magma that flows from a volcano.
What is lava?
300
volcanically active places on Earth's surface that are far away from a plate boundary...caused Hawaiian islands to form
What are hot spots?
300
made of pyroclastic material, erupts explosively
What is a cinder cone volcano?
300
largest pieces of pyroclastic material, are pieces of solid rock erupted from a volcano
What is volcanic blocks
300
forms when lava erupts underwater
What is pillow lava?
300
formed when magma is blasted through the air and hardens
What is pyroclastic material
400
volcanoes that haven't erupted in recorded history and will probably never erupt again
What is an extinct volcano?
400
erupts both lava & pyrcolastic material, also known as stratovolcanoes
What are composite volcanoes?
400
forms when the gases in stiff magma expand rapidly and the walls of the gas bubbles explode into tiny, glasslike slivers
What is volcanic ash?
400
cool, stiff lava that does not travel far from the erupting vent.
What is blocky lava
400
This refers to how thick magma is. It is determined by how much fluid magma has.
What is viscosity?
500
volcanic ash and gases spread throughout the atmosphere, they can block enough sunlight to cause the global temperatures to drop which cause
What is climate change?
500
A large, semicircular depression that forms when the chamber that supplies the magma to a volcano partially empties and the chamber's roof collapses
What is a caldera?
500
Forms when magma explodes from a volcano and solidifies in the air
What is pyroclastic material
500
liquid magma that flows from a volcanic vent
What is lava
500
produced when enormous of hot ash, dust, and gases are erupted from a volcano...looks like a cloud
What is pyroclastic flow?
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