A girl attaches the end of her jump rope to the trunk of a tree. What evidence exists that the rope is a transverse wave?

A transverse wave is identified by motion perpendicular to the direction the wave travels. When the girl shakes the rope, the rope moves up and down while the disturbance—and its energy—travels along the rope toward the tree. Therefore, the transfer of energy is perpendicular to the wave motion, which is choice B.

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