Set: Science Test on Volcanoes

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All 51 Terms

Term Definition
lava flows Rivers of red hot lava.
magma Hot liquid that is created deep underground beneath the earth's crust.
vents Holes where magma comes to the earth's surface.
pyroclastic material Magma and pieces of rock that fly through the air in a wreck of destruction during a violent eplosive eruption.
volcano A build-up of pyroclastic material or magma on earth's surface.
water This thirst-quinching natural liquid causes eruptions to be more explosive.
silica This mineral block causes eruptions to be more violent the more it has of it.
volcanic blocks Large pieces of pyroclastic material that is made up of rock.
blocky lava a cool stiff lava that can't move very far from the vent.
pahoehoe A type of lava that is slow-moving, and is like wax. It resembles rope.
Aa A brittle stiff lava.
volcanic bombs Blobs of magma that harden in the air.
lava magma that has been exposed to oxygen.
pillow lava Lava that forms during underwater eruptions.
lapilli Pebble sized bits of pyroclastic material that vary between 2 and 64mm in diameter.
volcanic ash Forms when stiff magma quickly expands. Is less than 2mm in diameter.
shield volcanoes Built out of layers on runny, non-explosive lava. They are large and non-explosive.
cinder cone volcano A volcanic cone created entirely from pyroclastic material. They are small and explosive.
composite volcanoes They are built out of pyroclastic material and layers of runny non-explosive lava. Are sometimes explosive, and sometimes aren't.
stratovolcano Another name for composite volcano.
crater A funnel shaped pit and the main vent or a volcano.
caldera Forms when a magma chamber empties, and the ground above it falls in, creating a large, sinking depression.
fissures Large cracks in the earth's crust.
lava plateaus They form similarly to sheild volcanoes; built out of layers of runny, non-explosive lava. They aren't volcanoes.
Mauna Kea An example of a shield volcano.
Paricutin An example of a cinder cone volcano.
Mount Fuji An example of a composite volcano.
extinct volcano A volcano that hasn't erupted in recorded history and most likely will never erupt again.
dormant volcano A volcano that doesn't show signs of erupting but has erupted in recorded history.
active volcano A volcano that shows signs of erupting.
seismograph An instrument that measures earthquakes. If many earthquakes that are small occur in a reletively short amount of time around a volcano, it may mean that the volcano is going to erupt soon.
tiltmeter An intrument that measures the difference of the sope of a volcano that can change, leading scientists to believe whether or not it will erupt. It isn't 100% accurate.
rift A deep crack.
hot spots When tecontic plates meet directly below a mantle plume, it forms these.
mantle plumes columns of rising magma.
false TRUE OR FALSE: A rift and a fissure are the same thing.
false TRUE OR FALSE: A caldera is smaller than a crater.
false TRUE OR FALSE: A caldera and a crater are formed similarly.
true TRUE OR FALSE: A caldera is much larger than a crater.
true TRUE OR FALSE: Aa is a stiff, brittle lava.
true TRUE OR FALSE: The more silica, the larger the eruption.
false TRUE OR FALSE: The less water, the larger the explosion.
false TRUE OR FALSE: A stratovolcano is another name for shield volcano.
true TRUE OR FALSE: A stratovolcano is another name for a composite volcano.
true TRUE OR FALSE: A stratovolcano is not a cinder cone volcano.
false TRUE OR FALSE: Cinder cone volcanoes are most often the biggest type of volcano.
cinder cone volcano CHARACTERISTICS: A small, explosive volcano that is made entirely from pyroclastic material.
shield volcano CHARACTERISTICS: A gigantic, non explosive volcano made from repeated layers of non-explosive lava.
composite volcano CHARACTERISTICS: A combination completely of the other 2 types of volcanoes, forms by both repeated layers of runny lava and by pyroclastic material, its' size can vary, and can be both explosive and non-explosive.
divergent boundary GOOD TO KNOW: This boundary almost always forms a non-explosive volcano.
convergent boundary GOOD TO KNOW: This boundary usually forms explosive volcanoes.

Set Information

Terms 51
Creator Magee
Created March 28, 2007
Groups Chat with me pppllleeeaaassseee, NameThatTune, Miss Mowry's Class & other ppl, randomness, Wordly Wise Study Group( Sage Canyon 6th Graders), Miss. Mowry Wordly Wise Helper, cool group! :), Technology, meheehee, nick / sami / josh / adam / matt / magee / frank, Pie lovers, Weesnaw, 5th Grade Nerds, the lemon chunks, Magee's group, i dont know a group name, King's Group, Sami's Group, Rachel's Group, everyone, JAM and BLAH, umm... i dont know, sage canyons awesome chitter chatters!!!!!!!!!!, Ms. Brashears' Amazingly Great class!, bananasclub, studying sucks chat chat, CHRIS' GROUP, Frank's awesome group, Camels Group :O, cHATcENTRAL101, Teh Pie, Michelleys group, CVMS Bobcats...blah (formerly Sage Coyotes...blah)
Tags magee, sagecanyon, canyon, sage, science, test
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dont_ask72 : test was prtty easy. lol
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seans33 : This is a good lesson on volcanoes. Props!
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Most Missed Words

  1. volcanic blocks → Large pieces of pyroclastic material that is made up of rock. - 30 misses
  2. composite volcanoes → They are built out of pyroclastic material and layers of runny non-explosive lava. Are sometimes explosive, and sometimes aren't. - 30 misses
  3. Paricutin → An example of a cinder cone volcano. - 27 misses
  4. blocky lava → a cool stiff lava that can't move very far from the vent. - 25 misses
  5. cinder cone volcano → A volcanic cone created entirely from pyroclastic material. They are small and explosive. - 25 misses
  6. shield volcanoes → Built out of layers on runny, non-explosive lava. They are large and non-explosive. - 24 misses
  7. Mount Fuji → An example of a composite volcano. - 21 misses