Difference between revisions of "Infrasound"
(Created page with "==Key Stage 4== ===Meaning=== Infrasound is sound below a frequency of 20Hz. ===About Infrasound=== : Infrasound is any sound which is too low pitched...") |
|||
| Line 7: | Line 7: | ||
: [[Human]]s cannot [[hear]] [[frequency|frequencies]] below 20Hz because their [[Ear Drum|ear drums]] are too small. | : [[Human]]s cannot [[hear]] [[frequency|frequencies]] below 20Hz because their [[Ear Drum|ear drums]] are too small. | ||
: Large [[animal]]s such as [[whale]]s and [[elephant]]s can [[hear]] [[infrasound]] because their [[Ear Drum|ear drum]]s are larger than [[human]] [[Ear Drum|ear drum]]s. | : Large [[animal]]s such as [[whale]]s and [[elephant]]s can [[hear]] [[infrasound]] because their [[Ear Drum|ear drum]]s are larger than [[human]] [[Ear Drum|ear drum]]s. | ||
| + | : [[Infrasound]] detectors can be used to track large [[animal]]s which communicate using [[infrasound]]. | ||
| + | : [[P-wave]]s are [[infrasound]] and a type of [[Seismic Wave|seismic wave]] caused by [[earthquake]]s. | ||
| + | : [[Infrasound]] detectors can help locate the source of an [[earthquake]]. | ||
Revision as of 14:39, 19 February 2019
Key Stage 4
Meaning
Infrasound is sound below a frequency of 20Hz.
About Infrasound
- Infrasound is any sound which is too low pitched to hear. Since the lowest frequency a human can hear 20Hz, then infrasound is any sound below that.
- Humans cannot hear frequencies below 20Hz because their ear drums are too small.
- Large animals such as whales and elephants can hear infrasound because their ear drums are larger than human ear drums.
- Infrasound detectors can be used to track large animals which communicate using infrasound.
- P-waves are infrasound and a type of seismic wave caused by earthquakes.
- Infrasound detectors can help locate the source of an earthquake.