An ____ is a sudden shaking of the ground. This is caused by the ____ at plate boundaries. When the ____ plates scrape or slip against each other, friction builds deep under the ground, often many kilometres deep. The ____ caused by the friction between the two plates eventually becomes so huge that it is released as ____ waves and an earthquake is caused. Earthquakes are most common along ____ boundaries. While they do occur in ____, the ____ are less severe as they occur many kilometres underground.

Leaderboard

Visual style

Options

Switch template

Continue editing: ?