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Evidence of a giant meteorite hitting the earth just before the dinosaur extinction came from a layer of iridium. Viewers learn about iridium's rarity, properties, applications, and how scientists named it. As part of a larger 118-part series on each of the chemical elements, iridium takes the 77th position.
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CCSS:
Adaptable
Concepts
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Instructional Ideas
- Graph the change in iridium costs over time
- Discuss how scientists know iridium is in meteorites
Classroom Considerations
- Consider the maturity of viewers as it causally mentions vodka drinking
- This video is hosted on YouTube
Pros
- Shares the professor's excitement about this element
- Displays a large sample of iridium, a rarely seen metal
Cons
- None