What process is associated with the existence of the shadow zone of P waves? 1. P-wave velocities lower in the mantle than in the crust. 2. The reflection of P waves from the boundary between the inner core and the outer core. 3. The reflection of P waves when crossing the boundary between the crust and the mantle. 4. The refraction of P waves when crossing the boundary between the mantle and the outer core.
What process is associated with the existence of the shadow zone of P waves?
1. P-wave velocities lower in the mantle than in the crust.
2. The reflection of P waves from the boundary between the inner core and the outer core.
3. The reflection of P waves when crossing the boundary between the crust and the mantle.
4. The refraction of P waves when crossing the boundary between the mantle and the outer core.
Primary waves are compressive body waves that can pass through solids as well as liquids. In accordance with Snell's law, when a P wave hits a border between two materials of varying density values, it will refract, or bend. The angle of refraction will be determined by the densities of the two materials as well as the wave's angle of incidence.
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