In a transverse wave, the motion of matter is perpendicular to the direction of travel.

In a transverse wave, the motion of matter is perpendicular to the direction of travel.

• A. Along the direction of travel
• B. In the same direction as the energy
• C. In circular motion
• D. Perpendicular to the direction of travel

Answer: (D)

In a transverse wave, the medium’s displacement is perpendicular to the direction the wave travels. This means the wave carries energy along a direction while the particles of the medium move up and down (or side to side) relative to that direction. For example, when you wiggle a rope, the pulse moves horizontally along the rope, but each bit of rope moves vertically. That perpendicular motion is what defines a transverse wave. Movements along the travel direction would describe a longitudinal wave, where the medium moves in the same line as the wave, and circular motion isn’t how a simple transverse wave behaves.

In a transverse wave, the medium’s displacement is perpendicular to the direction the wave travels. This means the wave carries energy along a direction while the particles of the medium move up and down (or side to side) relative to that direction. For example, when you wiggle a rope, the pulse moves horizontally along the rope, but each bit of rope moves vertically. That perpendicular motion is what defines a transverse wave. Movements along the travel direction would describe a longitudinal wave, where the medium moves in the same line as the wave, and circular motion isn’t how a simple transverse wave behaves.