There are three main types of seismic waves: P waves, S waves, and L waves. P waves are the first to arrive and move side to side, while S waves follow and move up and down. L waves, also known as surface waves, are the largest and come last, moving in a circular motion. Seismic waves are caused by the breaking of rock in earth's plates and are recorded by seismographs.

1. What are Seismic Waves?What are Seismic Waves?
• By: Elshaima OmranBy: Elshaima Omran

2. Seismic WaveSeismic Wave
• Seismic wavesSeismic waves are the waves caused by theare the waves caused by the
breaking of rock in the earth plates.breaking of rock in the earth plates.
• They are recorded on seismographs.They are recorded on seismographs.
• There are 3 different kinds of seismic wavesThere are 3 different kinds of seismic waves
1.1.P waveP wave
2.2.S waveS wave
3.3.L waveL wave

3. Primary WavesPrimary Waves
• P Waves (Primary wave)P Waves (Primary wave)
• It’s the first wave to arrive.It’s the first wave to arrive.
• It moves side by sideIt moves side by side

4. Secondary WavesSecondary Waves
• S wave (Secondary wave)S wave (Secondary wave)
• Second wave to come after the P wave.Second wave to come after the P wave.
• It moves up and down.It moves up and down.

5. Surface WavesSurface Waves
• L Waves ( Surface wave)L Waves ( Surface wave)
• This is the big wave. That comes lastThis is the big wave. That comes last
• It move in a circle.It move in a circle.

6. Surface WavesSurface Waves
• L Waves ( Surface wave)L Waves ( Surface wave)
• This is the big wave. That comes lastThis is the big wave. That comes last
• It move in a circle.It move in a circle.