Kōrero: Earthquakes

Primary and secondary waves (1 o 2)

The P-wave (primary or pressure wave) is a pulse of energy that travels quickly through the earth and through liquids. It forces the ground to move backwards and forwards as it is compressed and expanded. The S-wave (secondary or shear wave) follows more slowly, with a swaying, rolling motion that shakes the ground back and forth perpendicular to the direction of the wave.

Te whakamahi i tēnei tūemi

Te Ara - The Encyclopedia of New Zealand

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Te tuhi tohutoro mō tēnei whārangi:

Eileen McSaveney, 'Earthquakes - What causes earthquakes?', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/video/4403/primary-and-secondary-waves (accessed 23 June 2021)

He kōrero nā Eileen McSaveney, i tāngia i te 12 Jun 2006, reviewed & revised 1 Aug 2017