Question

Select the statement(s) that accurately characterize sound and light waves.

Both sound and light waves need a medium to travel.

Sound and light waves carry energy.

Sound and light travel in waves.

Sound and light waves carry matter.

Sound and light waves are a repeating disturbance.

Answer 1

Correct ones: 2, 3, 5.

- Both sound and light carry energy.
- Both travel as waves.
- Both are repeating disturbances (sound: pressure oscillations in a medium; light: oscillating electric and magnetic fields).

Incorrect:
- "Both need a medium" — only sound needs a medium; light can travel through vacuum.
- "Waves carry matter" — waves transport energy (and sometimes momentum), not matter.