Science 1
A weak spot in the crust where molten material or magma comes to the surface.
What is a volcano
When magma reaches to surface, it is called ____.
lava
Many volcanos that rim the Pacific Ocean.
What is the Ring of Fire.
Where do most volcanoes form?
Diverging plate boudaries.
Volcanoes at boundaries where two oceanic plates collide create a string of islands called ____ ____.
Island Arc.
What instrument records and measures seismic waves?
A seismograph.