science chap 3
Terms
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- What is a volcano
- a weak spot in the crust where magma comes up
- what is molten mixture from the mantle?
- magma
- what is magma when it reaches the surface
- lava
- what is the ring of fire
- a major volcanic belt tha rims the pacific ocean
- where do volcanoes occur
- diverging plate boundaries hot spots and converging boundaries
- how do volcanos form on the mid ocean ridge
- lava pours out of the cracks on the ridge
- where do many volcanos form
- on converging plate boundaries
- how does subduction at converging boundaries lead to the formation of volcanos
- stabs of oceanic crust sink through the trench into the mantle it melts to form magma which comes back up as lava
- when two oceanic plates collide to form a string of islands what are volcanos on these boundaries called
- island arcs
- what are three major island arcs
- japan new zealand and indonesia
- what collided to form the andes mountains called
- a continental plate and an oceanic plate
- what is a hot spot
- where magma melts through the crust
- how did the hawaiian islands form
- the pacific plate floated over a hot spot
- do hot spots only form over oceanic crust
- no
- where does magma form
- in the mantle