Question

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Answer 1

Answer:

2. $\displaystyle S\:waves\:are\:also\:called\:secondary\:waves.$

1. $\displaystyle Ritcher\:scale$

Explanation:

2. Seismic waves vibrate from side to side and up and down. They go through solids only, travel slower than Pressure [or Primary] waves, which arrive second, and shake the ground violently.

1. A Ritcher scale senses the magnitude of earthquakes.

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