RANDOM
VOCABS
NAME THEM
WHAT IS
FILL INS
100
Divergent boundaries within continents initially produce rifts which produce _____ ______.
rift valleys
100
what is another name for composite volcano?
stratovolcano
100
two plates sliding eachother horizontically past one another
transform boundaries
100
the largest of the three types, are gently sloping and built almost entirely of low viscosity basaltic lava flows
shield volcanoes
100
VOLCANIC CINDER CONES: are approximately ______% silica
60~70
200
BOUNDARIES: ----> <---- (coming together)
convergent
200
what is tephra?
Rock fragments that are thrown into the air during a volcanic eruption
200
give two examples of composite volcanoes and where they are located
Mount St. Helens in Washington, Mount Fuji in Japan
200
1.EXPLOSIVENESS: basaltic=_____ 2.VISCOSITY: basaltic=______
1.least 2.low
200
________ boundary pulls apart. <------- ------->
divergent
300
1.EXPLOSIVENESS: andesitic=______ 2.VISCOSITY:andesitic=______
1.medium 2.medium
300
what is viscosity
Internal resistance to flow
300
name three types of magma
basaltic,andesitic,rhyolitic
300
steep-sided, symmetrical cone shapes are built up by eruptions of intermediate viscosity andesitic lava and explosive tephra.
composite volcanoes
300
_______volcanoes are the most beautiful and the most deadly of the volcano types
composite
400
what causes rocks to melt into magma?
temperature, pressure, and water
400
what is shield volcano?
the largest of the three types, are gently sloping and built almost entirely of low viscosity basaltic lava flows
400
what are the three types of volcanoes
shield volcanoes, cinder cone volcanoes,composite volcanoes
400
formed by highly viscous rhyolitic magma.Volcanic domes are typically small
cinder cone volcanoes
400
we can find earthquakes and volcanoes mostly on the____ __ ___.(place)
Ring of fire
500
volcanoes are usually formed by __________ plates
converging
500
what is pyroclastic flow
Swift moving, potentially deadly clouds of gas, ash and other volcanic material a violent eruption gives off
500
name two of four islands on Hawaiian ridge
Kauai, Oahu, Maui, Hawaii
500
what is the best way to safely avoid a volcano disaster?
Make evacuation plans. Develop an emergency communication plan.Have disaster supplies on hand.
500
SHIELD VOLCANOES: The eruptions are generally nonexplosive due to the ______ silica content
low