What moves in a transverse wave?

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Explore Alberta's Grade 8 Science curriculum on Light and Optical Systems. Test your knowledge with engaging quizzes including flashcards and multiple choice questions. Prepare effectively for your exam!

Multiple Choice

What moves in a transverse wave?

Explanation:
Transverse waves have oscillations that are perpendicular to the direction the wave travels. Light fits this because it’s an electromagnetic wave with electric and magnetic fields oscillating at right angles to the direction of travel, and it can move through empty space. Sound, by contrast, moves the medium itself in the same direction as the wave, through compressions and rarefactions. Surface water waves involve water particles moving in circular paths, not purely transverse motion. Heat isn’t a transverse wave of a medium either; it’s energy transfer that can occur by radiation, conduction, or convection. So light is the example that moves as a transverse wave.

Transverse waves have oscillations that are perpendicular to the direction the wave travels. Light fits this because it’s an electromagnetic wave with electric and magnetic fields oscillating at right angles to the direction of travel, and it can move through empty space. Sound, by contrast, moves the medium itself in the same direction as the wave, through compressions and rarefactions. Surface water waves involve water particles moving in circular paths, not purely transverse motion. Heat isn’t a transverse wave of a medium either; it’s energy transfer that can occur by radiation, conduction, or convection. So light is the example that moves as a transverse wave.

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