Question

Which seismic wave is the fastest and can travel through both solid and liquid mediums?

• A. Primary (P) waves
• B. Secondary (S) waves
• C. Love waves
• D. Rayleigh waves

Hint:

P-waves = \textbf{Primary + Pressure} $\Rightarrow$ fastest and travel everywhere. S-waves = \textbf{Secondary + Shear} $\Rightarrow$ only solids.

Answer 1

The Correct Option is A

Concept: Seismic waves are energy waves generated by earthquakes. They are mainly classified into body waves and surface waves:

• Body waves: Travel through the Earth's interior (P-waves and S-waves).
• Surface waves: Travel along the Earth's surface (Love and Rayleigh waves).

• P-waves (Primary waves): Compressional waves, fastest, travel through solids, liquids, and gases.
• S-waves (Secondary waves): Shear waves, slower than P-waves, travel only through solids.
• Love and Rayleigh waves: Surface waves, slower but cause maximum damage.

Step 1:Identify the fastest seismic wave.
P-waves are the fastest seismic waves and are the first to be recorded by seismographs.
Step 2:Check the medium of propagation.
P-waves can travel through solids, liquids, and gases, whereas S-waves cannot travel through liquids.
Step 3:Select the correct answer.
Thus, the fastest wave that travels through both solid and liquid media is the Primary (P) wave.