Vocabulary
Lava
Volcanoes
Pyroclastic Material
Vocabulary 2
100
The body of molten rock that feeds a volcano
What is Magma chamber?
100
Liquid magma that is exposed to air and flows from a volcanic vent
What is Lava?
100
A vent or fissure in the Earth's surface through which magma and gases are expelled.
What is Volcano?
100
Large blobs of magma that harden in the air
What is Volcanic bombs?
100
A volcanically active area of Earth's surface far from a tectonic plate boundary
What is Hot spot?
200
An opening at the surface of the Earth through which volcanic material passes
What is vent?
200
Forms when lava erupts underwater and is in rounded lumps
What is Pillow lava?
200
A volcano that is small with steep slopes
What is Cinder cone volcano?
200
Tiny glass-like slivers
What is Volcanic ash?
200
An area of deep cracks that forms between two tectonic plates that are pulling away from each other
What is Rift zone?
300
A wide,flat landform that results from repeated nonexplosive eruptions of lava that spread over a large area
What is Lava plateau?
300
Pours out quickly and forms brittle crust; the crust is torn into jagged pieces as molten lava continues to flow underneath
What is Aa lava?
300
This volcano is sometimes referred to as Stratovolcano
What is Composite volcano?
300
"Little stones"
What is Lapilli?
400
A funnel-shaped pit near the top of the central vent of a volcano
What is Crater?
400
Cool, stiff lava that does not travel far from erupting vent; oozes from a volcano and forms jumbled heaps of sharp-edged chunks
What is Blocky lava?
400
Alternating layers of pyroclastic material with broad base and sides that get steeper towards the top
What is Composite volcano?
400
The largest pieces of pyroclastic material that are solid rock
What is Volcanic blocks?
500
A large, semicircular depression that forms when the magma chamber below a volcano partially empties and causes the ground above to sink
What is Caldera?
500
Lava flows slowly, like wax dripping from a candle; glassy surface with rounded wrinkles
What is Pahoehoe lava?
500
A volcano with gently sloping sides
What is Shield volcano?
500
Pebble-like bits of magma that hardened before they hit the ground
What is Lapilli?
M
e
n
u