Earthquakes and volcanoes
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The forces that cause earthquakes and volcanoes. Wherever the earth has been folded up into mountains, cracks may appear in the crust. When blocks of earth move along these cracks, or faults, earthquakes may occur. If melted rock is near a fault or weak spot in the crust, it may be forced out to produce a volcanic eruption.
Credits
- Produced by
- Paul Burnford
Sources
- 16mm Filmography (legacy record) — title, description, catalog record
- Wikidata · Q123372272 ↗ — year, country, credits
Original permalink · Record added 2026-01-23 03:27:11