Which situation shows something moving back and forth repeatedly?, A swinging playground swing, A car moving straight on the road, A ball rolling downhill, A book falling, When you shake one end of a rope, what travels along the rope?, The rope itself, Energy, The hand, Nothing, When you hear music from a speaker, what is traveling to your ears?, Air particles moving from the speaker to you, Energy in the form of sound waves, The speaker itself, Light, If you move a rope up and down, the motion of the rope is, Only forward, Only backward, Up and down, Not moving, When something repeats its motion again and again, it is called, Random motion, Projectile motion, Linear motion, Oscillatory motion.

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