Types of Volcanoes
I am flat, circular shaped, and result from non violent eruptions. What type of volcano am I?
Shield
Two diverging oceanic plates makes a
Ridge (underwater volcano)
What is a fissure?
A crack
Where is the ring of fire? Which ocean?
Pacific?
What is an isochron?
A line denoting something that happened at the same time
I am steep, small, and result from violent eruptions. What type of volcano am I?
Cinder Cone
Two diverging continental plates makes a:
Rift (above ground volcano)
What is a crater?
A bowl shaped depression
Which islands have volcanoes resulting from hot spots?
Hawaii
Describe a reversed magnetic field
Magnetic field from North pointing South
I am concave sloped and have several lava conduits running through me. What type of volcano am I?
Composite
Two converging oceanic plates makes
A trench and volcano (subduction)
What is a conduit
A tube shaped tunnel in which the magma leaves the volcano
Name a volcano in the US
Mount St Helen
As rocks get further from the ridge, age:
Increases
Describe a Hot Spot
A very hot area of magma in the mantle
A converging oceanic and continental plate makes:
A trench and volcano (subduction)
What is a vent?
An opening of the volcano
Which country does the Mediterranean Belt fork around?
Saudi Arabia
What does a magnetometer AND sonar do?
Magnetic fields and depth of ocean
How is lava different than magma
Lava left the volcano
Along which type of boundary are most volcanoes found?
Oceanic-Continental convergent plates
What is a caldera?
A large crater
Which island has the oldest volcano?
Kauai
What is an epoch?
A long period of time