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Difficulty: EasyProduction, Propagation, and Classification of Waves

Match each type of wave listed on the left with its correct classification and propagation characteristic on the right.

  • Sound wave in airMechanical longitudinal wave requiring a material medium
  • Radio wave in vacuumElectromagnetic transverse wave capable of traveling without a medium
  • Water ripple on a lake surfaceMechanical transverse wave propagating along a liquid surface

Answer

Sound wave in air matches Mechanical longitudinal wave requiring a material medium; Radio wave in vacuum matches Electromagnetic transverse wave capable of traveling without a medium; Water ripple on a lake surface matches Mechanical transverse wave propagating along a liquid surface.
Each wave is correctly paired based on whether it needs a physical medium to propagate (mechanical waves require a medium, electromagnetic waves do not) and whether the displacement is parallel (longitudinal) or perpendicular (transverse) to the direction of energy propagation.

Step-by-Step Solution

1
Identify the medium requirement and vibration direction for a sound wave in air.
Sound waves require a material medium (air) and vibrate parallel to the direction of wave movement, making them mechanical longitudinal waves.
Classification depends on whether a physical medium is needed and how particles oscillate relative to energy transport.
2
Identify the medium requirement and vibration direction for a radio wave in a vacuum.
Radio waves can travel through empty space without a material medium and consist of field oscillations perpendicular to propagation, making them electromagnetic transverse waves.
Electromagnetic waves propagate via mutually perpendicular electric and magnetic field oscillations and require no medium.
3
Identify the medium requirement and vibration direction for a water ripple.
Ripples require a material medium (water) and displace surface water up and down perpendicular to wave travel, making them mechanical transverse waves.
Surface water waves exhibit transverse displacement characteristics in a physical liquid medium.

Key Concept

Classification of waves based on medium requirement (mechanical vs. electromagnetic) and particle vibration direction relative to propagation (transverse vs. longitudinal).
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Topics

Production, Propagation, and Classification of Waves

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