How do seismic waves help scientists understand Earth's interior?
1 Answer
Mar 5, 2016
The waves make a “picture” of the different types of materials, showing layers of different rocks and liquids.
Explanation:
They can be produced by natural phenomena like earthquakes and volcanoes, or generated intentionally by explosive pulses. See also (sources of the graphics):
http://www.parkseismic.com/Whatisseismicwave.html
http://geology.gsapubs.org/
http://lifeng.lamost.org/courses/astrotoday/CHAISSON/AT307/HTML/AT30703.HTM
