Vocab 1
Vocab 2
Vocab 3
Vocab 4
Vocab 5
100
molten mixture of rock-forming substances, gases, and water from the mantle
What is magma?
100
a substance that cannot be broken down into other substances
What is an element?
100
weak spot in the crust where molten material, or magma, comes to the surface
What is a volcano?
100
substance made of two or more elements that have been chemically combined
What is a compound?
100
when magma reaches the surface it is called
What is lava?
200
this is formed by the many volcanoes that rim the Pacific Ocean
What is the Ring of Fire?
200
if a volcano is expected to awaken in the near future and become active, it is called a
What is dormant volcano?
200
area covered by lava as it pours out of a vent
What is a lava flow?
200
magma moves upward through this long tube
What is a pipe?
200
if a volcano is unlikely to erupt again it is called a
What is extinct volcano?
300
occurs when an explosive volcano hurls out a hot mixture of gases, ash, cinders and bombs
What is pyroclastic flow?
300
huge hole left by a collapsed volcanic mountain
What is a caldera?
300
are where material from deep within the mantle rises and melts, forming magma
What is a hot spot?
300
cooler and slower moving lava
What is aa?
300
the resistance of a liquid to flow
What is viscosity?
400
when volcanoes create a string of islands it is called
What is an island arc?
400
fountain of water and steam that erupts from the ground
What is a geyser?
400
Any property that produces a change in the composition of matter
What is a chemical property?
400
tall, cone shaped mountains in which layers of lava alternate with layers of ash
What is a composite volcano?
400
in some volcanic areas, water heated by magma can provide an energy source called
What is geothermal energy?
500
smaller bodies of hardened magma create these
What are dome mountains?
500
geologists use __________ and other instruments to detect slight surface changes in elevation
What is a tiltmeter?
500
type of eruption that occurs when magma is low in silica
What is a quiet eruption?
500
type of eruption could cause heavy ash that collapses a roof when wet
What is explosive?
500
mass of rock formed when a large body of magma cools inside the crust
What is a batholith
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