volcanoes Flashcards
1
Q
how do volcanoes occur
A
tectonic plates collide
massive pressure buildup
causes mount / buildup / cracks
hot magma rises and is released through cracks
2
Q
destructive margin
A
denser plate SUBDUCTS under the other
3
Q
constructive boundary
A
plates move apart causing gaps for magma to rise
4
Q
2 types of volcanoes
A
shield volcanoes
composite volcanoes
5
Q
shield volcanoe
A
gentle slope with a wide base
6
Q
composite volcano
A
steep sided with a cone shape
