Question

______ are the first earthquake waves to be recorded on a seismigraph of an Earthquake.​

Answer 1

Answer:

Foreshocks

Explanation:

fore shocks comes before earthquake

main shock comes during earthquake

and

after shocks comes after earthquake

Answer 2

Answer:

The P wave is designated the primary preliminary wave because it is the first to arrive at a seismic station after an earthquake.

Explanation:

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