Types of waves
- Created by: emews
- Created on: 05-11-17 14:48
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- Types of waves
- Longitudinal
- Sound
- In longitudinal waves, the oscillations are along the same direction as the direction of travel and energy transfer.
- Sound waves and waves in a stretched spring are longitudinal waves. P waves are also longitudinal waves.
- Longitudinal waves show areas of compression and rarefaction.
- transverse
- Light
- In transverse waves, the oscillations are at right angles to the direction of travel and energy transfer.
- Light and other types of electromagnetic radiation are transverse waves.
- All types of electromagnetic waves travel at the same speed through a vacuum, such as through space.
- Water waves and S waves are also transverse waves.
- Seismic waves travel through the layers of the Earth. They usually result from an earthquake, volcanic eruption or other explosion.
- Earthquakes happen when large parts of the Earth's crust and upper mantle move suddenly.
- Earthquakes are detected using a seismometer – a piece of equipment that picks up the vibrations in the ground.
- A scientist can work out the location of an earthquake by calculating the time difference between the arrival of the P waves and S waves.
- The speed of P waves and S waves increases as they travel deeper into the Earth’s mantle.
- S waves cannot pass through the liquid outer core, but P waves can.
- Longitudinal
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