Question

______ waves travel at about 3.5 per second
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Answer 1

Answer:

s waves

Explanation:

S-waves move up and down. They change the rock's shape as they travel. S-waves are about half as fast as P-waves, at about 3.5 km (2 miles) per second.

Answer 2

Explanation:

Secondary waves (also called S-waves) are about half as fast as P-waves, traveling at about 3.5 km (2 miles) per second, and arrive second at seismographs. S-waves move in an up and down motion perpendicular to the direction of wave travel.

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