Columnar joints, like the ones shown in the photograph, are formed:
A) when hot but solid igneous rock contracts
B) when hot liquid igneous rock contracts
C) when hot but solid igneous rock expands
D) when hot liquid igneous rock expands

Question

Columnar joints, like the ones shown in the photograph, are formed: 
A) when hot but solid igneous rock contracts 
B) when hot liquid igneous rock contracts 
C) when hot but solid igneous rock expands 
D) when hot liquid igneous rock expands

Quizplus · Accepted Answer

The Answer of Columnar joints, like the ones shown in the photograph, are formed: 
A) when hot but solid igneous rock contracts 
B) when hot liquid igneous rock contracts 
C) when hot but solid igneous rock expands 
D) when hot liquid igneous rock expands

Columnar Joints, Like the Ones Shown in the Photograph, Are