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Obsidian

earth science Maturity 7-9

Obsidian is a dark rock.

Arrowhead.jpg
Arrowhead.jpg
It comes from hot lava. The lava cools very fast. This makes it look like glass. It has very sharp edges. People used it to make tools. Can you find a sharp stone?
Pig.snowobsidian.jpg
Pig.snowobsidian.jpg

40 words
🖼️ Images & Media (8)
File:Schneeflockenobsidian-Daumenstein.JPG
Schneeflockenobsidian-Daumenstein.JPG
File:Arrowhead.jpg
Arrowhead.jpg
File:Obsidian from Milos in Crete, 3000-2300 BC, AMH, 144707.jpg
Obsidian from Milos in Crete, 3000-2300...
File:20141231 155025- Prehistoric- Obsidian-Turkey-cropped.jpg
20141231 155025- Prehistoric-...
File:ObsidianWareLopezMAPHidalgo2.JPG
ObsidianWareLopezMAPHidalgo2.JPG
File:Spiro_Mounds_Obsidian_Scraper_with_Mesoamerican_origin,_Dorsal,_Craig_Skinner_of_the_Northwest_Research_Obsidian_Studies_Laboratory.jpg
Spiro_Mounds_Obsidian_Scraper_with_Mesoame...
File:Takalik Abaj obsidian 1.jpg
Takalik Abaj obsidian 1.jpg
File:Pig.snowobsidian.jpg
Pig.snowobsidian.jpg
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📚 Content adapted from Wikipedia | Readability: FK 13.5 | Vital Level 5