Earthquake clues - Earthquake energy transmitted as seismic waves that pass through Earth. – Seismic waves have been used to probe the interior. • Wave velocity changes with density. • Velocity changes give depth of layer changes.
Earthquake clues - Earthquake energy transmitted as seismic waves that pass through Earth.–Seismic waves have been used to probe the interior.•Wave velocity changes with density.•Velocity changes give depth of layer changes.