A "Slinky" toy is made up of a long flexible spring.The analogous wave to the primary (P)wave produced in an earthquake would be generated by moving the end of the spring
A) round and round,in a circular motion perpendicular to the axis of the spring.
B) in a twisting motion back and forth,thereby tightening and loosening the spiral of the spring.
C) side to side,in a direction perpendicular to the spring.
D) back and forth in a direction along the spring.

Question

Quizplus · Accepted Answer

The primary (P) wave in an earthquake is a compressional wave that moves back and forth in the direction that the wave is traveling. This is analogous to moving the end of the Slinky toy back and forth in a direction along the spring. Therefore, option D is the best choice.

A "Slinky" Toy Is Made Up of a Long Flexible