Difference between revisions of "S-wave"
(Created page with "==Key Stage 4== ===Meaning=== '''S-waves''' are transverse seismic waves that travel through the Earth during an earthquake. ===About S-waves===...") |
|||
| Line 8: | Line 8: | ||
: '''S-waves''' are [[refract]]ed as they move through the [[Earth]] because different layers of the [[Earth]] have different [[density]]. | : '''S-waves''' are [[refract]]ed as they move through the [[Earth]] because different layers of the [[Earth]] have different [[density]]. | ||
: [[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 [[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]]. |
Revision as of 08:44, 22 March 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.