Earth's Interior & Earthquakes

Front

Seismic Waves

Back

Energy waves from earthquakes

Front

P-waves

Back

Primary, fastest seismic waves

Front

S-waves

Back

Secondary, slower than P-waves

Front

Surface Waves

Back

Travel along Earth's surface

Front

Crust

Back

Earth's outermost layer

Front

Mantle

Back

Layer beneath the crust

Front

Core

Back

Innermost Earth layer

Front

Lithosphere

Back

Rigid outer part of Earth

Front

Asthenosphere

Back

Semi-fluid layer under lithosphere

Front

Seismograph

Back

Instrument to record seismic waves