Question

Distinguishing Types of Waves through Examples
A 2-column table with 3 rows. The first column labeled mechanical waves has entries ocean water, light waves, earthquake waves. The second column labeled electromagnetic waves has entries sound waves, radiation waves, X-ray waves.

How should the table be changed to correctly distinguish between mechanical and electromagnetic waves?

Earthquake waves and radiation waves need to change places.
Light waves and X-ray waves need to change places.
Ocean waves and X-ray waves need to change places.
Sound waves and light waves need to change places.

Answer 1

Swap sound waves and light waves.

Reason: mechanical waves (ocean water, earthquake waves, sound waves) require a medium; electromagnetic waves (light waves, radiation waves, X‑ray waves) do not.