Impact
Waves
Both words in one sentence
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Depopulation Bomb: The tidal waves caused by the initial cometary impact wipes out most of humanity.
Source: Literature / Lucifer's Hammer -
Unlike Armadillo, Rafflar's bouncing also creates waves of crystal to erupt from the point of impact!
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In addition, any geological faultlines near an impact site let go completely, causing massive earthquakes and volcano eruptions (and for the purposes of the story, "nearby" means "within a thousand miles") killing many of those who survive the tidal waves.
Source: Literature / Lucifer's Hammer
Cite this Source
Waves and Impact. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/impact/waves
Impact & Waves. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/impact/waves>.
Waves or Impact. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/impact/waves.
Google Ngram Viewer shows how "impact" and "waves" have occurred on timeline