Show:
Vocabulary
Vocabulary
Vocabulary
Vocabulary
Vocabulary
100
a landform, usually cone shpaed, produeced by a collection of erupted material around a vent in the surface of the earth and through which gas and erupted material passes
What is a volcano
100
a scientist who studies volcanoes and volcanic phenomena
What is a volcanologist
100
a mudflow that occurs when rain falls through clouds of ash or when rivers become choked with falliing debris
What is a lahar
100
the ejection of volcanic materials into the atmosphere and the settling of those materials over a wide area of the surface of the earth
What is an ash fall
100
a small, bowl shaped hole that forms when rock explodes from a volcano during an eruption
What is a crater
200
molten rock expelled by a volcano during an erupting and resulting rock after solidification and cooling
What is lava
200
a powerful "river" of mud that forms when debris, such as volcanic eruption, moves into a stream or river
What is a mudflow
200
a large, steep sided, circular or oval volcanic depression that forms when magma retreats or erupts from a shallow under magma chamber; with no magma to support the ground above it, the overlaying rock collapses and this is formed
What is a caldera
200
a zone of intense earthquake and volcanic activity that encircles the Pacific Ocean basin
What is the Ring of Fire
200
shape and size
What is the way volcanoes are classified
300
molten rock that is found beneath the earth's surface
What is magma
300
a bulbous, steep sided dome that forms at the top of a volcano when thick, relative "cold" magma emerges from the volcanic opening
What is a lava dome
300
balloon like mounds that form when lava erupts under water or empties into the ocean
What is pillow lava
300
a long crack in the earth's crust
What is a fissure
300
Hawaiian Islands and Iceland
What is a shield volcano
400
a localized zone of melting in the mantle that is fixed under a plate
What is a hot spot
400
lava that flows quickly over the surface of the earth and covers a wide area
What is a lava flow
400
the tendency to resist flow
What is viscosity
400
a piece of lava that hardened in the air
What is a cinder
400
has sudden, violent eruptiosns and is formed from ash and cinders
a cinder cone volcano
500
a volcano that forms from alternating eruptions of viscous lava and broken rock.It is steep near the summit and flat towards the base
What is a composite volcano
500
A msall cone shpaed volcano made of broekn rocks or blobs of hardened lava (less than 400 meters high)
What is a cinder cone volcano
500
a wide, broadly sloping volcano that forms from runny lava. Largest of the volcanoes
What is a shield volcano
500
Fuji and Mt. St. Helens
What is a composite volcano
500
under a tectonic plate
What is where hot spots form