Basalt Plateaus Erupt from ____

Q11: Mafic magma is generated beneath spreading ridges,

Q12: Define volcanism.

Q13: Cinder cones _.<br>A)are large, gently sloped volcanoes<br>B)often

Q14: The three major types of volcanoes are

Q15: Mount _ erupted in 79 A.D. and

Q17: Volcanic eruptions destroy buildings and productive land,

Q18: Geologists successfully gave timely warnings of impending

Q19: Although it is difficult to get a

Q20: Pyroclastic materials _.<br>A)have low viscosity and a

Q21: A lahar may form when _.<br>A)lava is