Correct option is C
The correct answer is (c) Primary waves.
· Primary waves (P-waves) are the fastest seismic waves, traveling through the Earth at the highest speeds compared to other seismic waves.
· P-waves are compressional waves that move by compressing and expanding the material they pass through, traveling through both solids and liquids.
Information Booster:
Tidal waves:
· Tidal waves, also known as tsunamis, are large ocean waves caused by underwater earthquakes, volcanic eruptions, or landslides. They are not classified as seismic waves.
Surface waves:
· Surface waves travel along the Earth's surface and are slower than both P-waves and S-waves. They cause the most damage during an earthquake due to their larger amplitude and longer duration.
Secondary waves (S-waves):
· S-waves are slower than P-waves and can only travel through solids. They move the ground up and down or side-to-side perpendicular to the direction of wave propagation.