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refraction
Refraction
mantle and crust
He noticed that seismic waves changed velocity at measurable depths. The boundary where seismic waves increased in speed is the boundary between the crust and the mantle, where seismic waves start to travel through more dense rock.
The Moho is the name of the boundary between the crust and the mantle. It's a boundary where seismic waves increase in velocity. It is not an actual structure, but the beginning of the uppermost part of the mantle, which is composed of rigid, strong rock.
Refraction
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refractionRefraction
Destructive plate boundary.
Answer: When a seismic wave 'bounces backward' and reaches a boundary, it is called Reflection. Explanation: The seismic waves are the result of the landslides, earthquakes, volcanic eruptions, explosions by humans
Answer: When a seismic wave 'bounces backward' and reaches a boundary, it is called Reflection. Explanation: The seismic waves are the result of the landslides, earthquakes, volcanic eruptions, explosions by humans
in all directions
Reflection