Difference between revisions of "S-wave"
| Line 9: | Line 9: | ||
: [[Seismic Wave|Seismic]] detectors can be used to observe [[S-wave]]s at different locations on [[Earth]] during an [[earthquake]] and this information can be used to determine the structure of the [[Earth]]. | : [[Seismic Wave|Seismic]] detectors can be used to observe [[S-wave]]s at different locations on [[Earth]] during an [[earthquake]] and this information can be used to determine the structure of the [[Earth]]. | ||
: [[S-wave]]s do not travel through the [[Earth's Core|core]] of the [[Earth]] which is [[Scientific Evidence|evidence]] that the [[Earth's Core|core]] must be a [[liquid]]. | : [[S-wave]]s do not travel through the [[Earth's Core|core]] of the [[Earth]] which is [[Scientific Evidence|evidence]] that the [[Earth's Core|core]] must be a [[liquid]]. | ||
| + | |||
| + | ===References=== | ||
| + | ====AQA==== | ||
| + | |||
| + | :[https://www.amazon.co.uk/gp/product/0008158770/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158770&linkCode=as2&tag=nrjc-21&linkId=ec31595e720e1529e49876c3866fff6e ''S wave, pages 210-11, GCSE Physics; Student Book, Collins, AQA ''] | ||
Revision as of 17:59, 12 November 2019
Key Stage 4
Meaning
S-waves are transverse seismic waves that travel through the Earth during an earthquake.
About S-waves
- S-waves are known as secondary waves because they travel slower than P-waves so they arrive at detectors second.
- S-waves can travel through solids but not through liquids. This means they can be used to detect magma, water and oil hidden under the surface of the Earth.
- S-waves are refracted as they move through the Earth because different layers of the Earth have different density.
- Seismic detectors can be used to observe S-waves at different locations on Earth during an earthquake and this information can be used to determine the structure of the Earth.
- S-waves do not travel through the core of the Earth which is evidence that the core must be a liquid.