Volcanologists can often tell an eruption is eminent because of changes in __________.

The separation of liquids from crystals during crystallization is known as _______.

Contrast igneous rock textures between those formed internally (intrusively) and those formed externally (extrusively).

Satellite images can be used to detect changes in a volcano’s surface temperature.

A(n) ______ is the smallest chemical unit that retains all of the properties of a compound.

The Red Sea and East Africa are good examples of divergent plate boundaries.

The ________ explains how new crust is formed and recycled by large-scale motions of Earth’s surface and interior.

Which type of plate boundary results from two or more plates coming together?

Hawaii and Yellowstone sit over ‘hot spots’ known as _______.

In South America, most of the glacial striations observed on the rocks are oriented  ( select one and type in the answer: [ north-south or ; south-north or; east-west or; west-east] _______.