Where Two Oceanic Plates Converge, Subduction Generates Huge Amounts of Magma

Q2: Deep, V-shaped, steep-walled valleys called _ _

Q3: Rift valleys are characterized by _ faults

Q4: A chain of volcanic islands that form

Q5: Some of the world's richest offshore petroleum

Q6: Beyond the Mid-Oceanic Ridge system are flat,

Q8: Samples can be taken from the deep

Q9: A/an _ _ is a deep trough

Q10: The part of oceanic crust made up

Q28: Oceanic crust is mostly composed of _.

Q81: The west coast of South America is