Show:
plate tectonics
volcanic activity
exploring a volcano
eruptions
landforms
100
A weak spot in the crust where magma is released.
What is a volcano?
100
This causes a volcanic eruption.
What is gas pressure?
100
lava collects here, the bowl-shaped area.
What is a crater?
100
The two types of lava produced by quiet eruptions.
What are AA and pahoehoe?
100
A wide, gentle-sloping mountain caused by graual build-up of lava.
What is a shield volcano?
200
a major volcanic belt that surrounds the Pacific Ocean.
What is The Ring of Fire?
200
Name 3 things that effect an eruption.
What are amount of gas dissolved, silica content, temperature, viscocity.
200
The point where magma leaves the pipe?
What is the vent?
200
This is fast-moving and incredibly hot lava.
What is Pahoehoe?
200
A steep, cone-shaped hill or mountain that is created by build up of ash, cinders, and bombs.
What is a cinder cone volcano?
300
A string of islands that echo a curve of a deep-ocean trench.
What is an island arc?
300
This happens to magma as the temperature increases.
What is becomes more fluid?
300
A narrow, vertical crack in crust through which magma rises to the surface.
What is a pipe?
300
This is lava from a quiet eruption and is rough and chunky.
What is Aa?
300
A tall mountain formed from build up of lava, cinders and ash, and bombs in alternating layers.
What is a composite volcano?
400
A volcano formed far from a plate boundary.
What is a hot spot?
400
The three types of volcanoes.
What are shield volcanoes, composite volcanoes, and cinder volcanoes?
400
A large underground pocket of magma.
What is a magma chamber?
400
This determines what type of eruption a volcano will have.
What is the silica content of magma?
400
Magma that forces itself across rock layers within the crust and cools.
What is a dike?
500
The mid-ocean ridge is this type of boundary.
What is a diverging plate boundary?
500
A clean, reliable energy source caused by volcanic sources.
What is geothermal energy?
500
Extremely hot, molten material that contains dissolved gasses.
What is magma?
500
An explosive eruption that causes ash, cinders, bombs, and release of gas.
What is a pyroclastic flow?
500
A mass of rock formed when a large body of magma cools inside the crust.
What is a batholith?