Earthquakes are caused by tectonic movements in the Earth's crust. The main cause is when tectonic plates ride one over the other, causing orogeny (mountain building), and severe earthquakes.
ɜː θ k w eɪ k s WORD_BOUNDARY ɑ ɹ WORD_BOUNDARY k ɔ z d WORD_BOUNDARY b aɪ WORD_BOUNDARY t ɛ k t ɑ n ɪ k WORD_BOUNDARY m uː v m ə n t s WORD_BOUNDARY ɪ n ð ɪ WORD_BOUNDARY ɜː θ z WORD_BOUNDARY k ɹ ʌ s t WORD_BOUNDARY ð ə WORD_BOUNDARY m eɪ n WORD_BOUNDARY k ɔ z WORD_BOUNDARY ɪ z WORD_BOUNDARY w ɛ n WORD_BOUNDARY t ɛ k t ɑ n ɪ k WORD_BOUNDARY p l eɪ t s WORD_BOUNDARY ɹ aɪ d WORD_BOUNDARY w ʌ n WORD_BOUNDARY oʊ v ə ɹ WORD_BOUNDARY ð ɪ WORD_BOUNDARY ʌ ð ə ɹ WORD_BOUNDARY k ɔ z ɪ ŋ WORD_BOUNDARY ɔ ɹ ɑ d̠ʒ ɛ n i WORD_BOUNDARY m aʊ n t ɪ n WORD_BOUNDARY b ɪ l d ɪ ŋ WORD_BOUNDARY æ n d WORD_BOUNDARY s ɪ v ɪ ɹ WORD_BOUNDARY ɜː θ k w eɪ k s WORD_BOUNDARY