A volcano emits ash,which falls from the sky,settles in layers,and is eventually cemented.The resulting rock is termed ____________.

A)pumice
B)granite
C)tuff
D)ignimbrite

Question

A volcano emits ash,which falls from the sky,settles in layers,and is eventually cemented.The resulting rock is termed ____________.

A)pumice 
B)granite 
C)tuff 
D)ignimbrite

Quizplus · Accepted Answer

Tuff is a volcanic rock that is formed from the accumulation of volcanic ash. The ash is compacted and cemented, resulting in a soft rock that can be easily carved. Pumice, on the other hand, is a volcanic rock that is formed from frothy lava that has rapidly cooled, resulting in a rock that is full of air pockets. Granite is a common igneous rock that is formed from the slow cooling of magma or lava. Ignimbrite is a type of volcanic rock that is formed from the ash and rock fragments that are ejected during explosive volcanic eruptions.

A Volcano Emits Ash,which Falls from the Sky,settles in Layers,and