bulkanology test 1 Flashcards
1
Q
a naturally occuring landform produced where lava erupts onto earth’s surface
A
volcano
2
Q
why do volcanoes erupt
A
due to decompression
3
Q
where do volcanoes erupt
A
- pacific ring of fire
- hotspots
- spreading centers
4
Q
how many volcanoes are in the pacific ring of fire
A
around 450
5
Q
the surface manifestation of hot montle plumes rising from the mantle which is believed to originate from the boundary of the mantle and outer core. these manifestations have very active volcanism, high het flow and crustal uplifting
A
hotspots
6
Q
mantle plumes originally have “heads” which intrude and create ______?
A
flood basalts
7
Q
explain hotspots
A
tama
8
Q
regions where divergent plate boundaries spread and produce juvenile magma material, creating submarine volcanoes
A
spreading centers
9
Q
A
