Earth's Crust

It is the boundary between the crust and the mantle.

• mohorovicic discontinuity
• lithosphere
• outer core
• inner core

The upper mantle and the crust make up the ______.

• mohorovicic discontinuity
• lithosphere
• outer core
• inner core

It consists of a semi-liquid rock.

• crust
• mantle
• outer core
• inner core

The _____ outlines the major trenches in the Pacific Ocean and is an active volcanic and earthquake area.

• Alpine-Himalayan belt
• circum-Pacific belt
• Indo-Australian Plate
• Eurasian Plate

These volcanoes are usually associated with seismic activity, presence of hot water springs, and changes in the elevation of the volcano's crater.

• extinct
• dormant
• active
• earthquake

These are volcanos that have no known history of eruption but may erupt based on seismic indications of tectonic activity beneath the volcano.

• extinct
• dormant
• active
• earthquake

Volcanoes that are not active or have not erupted for a long period of time are called ______.

• extinct
• dormant
• active
• earthquake

It is a series of shockwaves traveling through Earth resulting from a sudden release of energy.

• extinct
• dormant
• active
• earthquake

It is the point within the Earth where an earthquake rupture starts.

• focus
• epicenter
• seismic waves
• fault

It is the point at the surface directly above where an earthquake starts.

• focus
• epicenter
• seismic waves
• fault