Seismic waves are vibrations that travel through which medium?

Seismic waves are vibrations that travel through which medium?

• A. Water
• B. Air
• C. Earth
• D. Vacuum

Answer: (C)

Seismic vibrations need something to move through, so they propagate through matter. These waves travel through Earth materials—rock, magma, and other parts of the planet’s interior—rather than through empty space. A vacuum has no particles to carry the motion, so waves can’t travel there. That’s why the medium for seismic waves is the Earth itself. While water and air can carry other kinds of waves (like sound), seismic waves are tied to moving through the Earth, and their behavior helps scientists learn about the planet’s interior.

Seismic vibrations need something to move through, so they propagate through matter. These waves travel through Earth materials—rock, magma, and other parts of the planet’s interior—rather than through empty space. A vacuum has no particles to carry the motion, so waves can’t travel there. That’s why the medium for seismic waves is the Earth itself. While water and air can carry other kinds of waves (like sound), seismic waves are tied to moving through the Earth, and their behavior helps scientists learn about the planet’s interior.