Seismic Waves and Earth's Interior

Front

What is the dense sphere of solid iron and nickel at the center of Earth?

Back

Inner Core

Front

What are the longitudinal waves that are the first to arrive and can move through solids or liquids?

Back

Primary (P) waves

Front

What evidence indicates the presence of a solid inner core?

Back

P-wave speed increases suddenly at 5200 km and no longer increases.

Front

What are the transverse waves that are the second to arrive and cannot move through liquids?

Back

Secondary (S) waves

Front

What is the source of an earthquake called?

Back

Epicenter

Front

What is the layer of Earth located between the crust and the outer core?

Back

Mantle

Front

What type of seismic waves can travel through both solids and liquids?

Back

Primary (P) waves

Front

What is the term for the point on the Earth's surface directly above the earthquake's origin?

Back

Epicenter

Front

What are the waves that travel along the Earth's surface and cause the most damage during an earthquake?

Back

Surface waves

Front

What is the layer of Earth that is liquid and surrounds the inner core?

Back

Outer core