Submitted by admin on Sun, 04/20/2014 - 18:36
definition:
(Especially of materials with a high melting point, such as metal and glass) liquefied by heat.
sentence:
A spectacular form of heat advection occurs when molten rock, or magma, erupts from a volcano.
Solidification of the molten material into rocks happened as the Earth cooled.
difficulty:
medium
toefl frequency:
2
toefl classification: