Hot spot Volcanoes Flashcards
(12 cards)
Most volcanic activity occurs at plate boundaries but there are some areas of intense volcanic activity that occur away from plate boundaries, these are called ___ _____
hot spots
Concentrations of ___________ elements in the mantle cause heat to rise (because it’s less dense) to the earths surface via __________
radioactive convection
The heat warms the earths _____ as well.
crust
The intense heat that rises from the mantle to the crust is called a magma _____.
plume
When magma reaches the top of the plume, it breaks through the crust to the earths surface and breaks through forming ________
volcanoes
The lava at hot spots is ________ and runny and low on the ___ scale.
basaltic VEI
The volcanic plume remains __________ but the crust above it moves.
Stationary
Volcanic activity in the part of the crust that was above the hot spot _________as it moves away.
Decreases
New volcanos form in the part of the crust that is now _____ the hot spot.
Above
As the crust continues to move a _____ of volcanos is formed.
Chain
There is a hot spot volcano in ______ USA.
Hawaii
When this process takes place underwater ______ ______ are formed
Island arches