Seismic Waves

**Statement 1 is correct:** In a seismograph, **P waves** are recorded earlier than S waves. This is true because **P waves**, also known as **Primary waves**, are the first to be recorded by a seismograph during an earthquake. They are faster and hence, reach the recording instrument before the S waves. **Statement 2 is correct: P waves** are longitudinal or compressional waves, which means the particles in these waves vibrate in the same direction as the wave propagation. On the other hand, S waves, or Secondary waves, are transverse waves, where the particle motion is perpendicular to the direction of wave propagation. Therefore, both statements are correct.