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Course: Big History Project > Unit 3
Lesson 1: How Were Stars Formed? | 3.0- ACTIVITY: The Life of a Star
- ACTIVITY: Infographic —Life Cycles of the Stars
- WATCH: Unit 3 Overview - Stars and Elements
- ACTIVITY: Unit 3 Vocab Tracking
- WATCH: How Were Stars Formed?
- ACTIVITY: Threshold Card — Threshold 2 Stars Light Up
- WATCH: Threshold 2 — Stars Light Up
- WATCH: Elements - A Brief Big History (H2)
- ACTIVITY: This Threshold Today
- ACTIVITY: DQ Notebook 3.0
- READ: Gallery — Structure in the Universe
- READ: Gallery — Stars
- Quiz: How Were Stars Formed?
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WATCH: Elements - A Brief Big History (H2)
Inside stars, gravity and heat crush and restructure atoms – creating all the elements on the periodic table. Like what you see? This video is part of a comprehensive social studies curriculum from OER Project, a family of free, online social studies courses. OER Project aims to empower teachers by offering free and fully supported social studies courses for middle- and high-school students. Your account is the key to accessing our standards-aligned courses that are designed with built-in supports like leveled readings, audio recordings of texts, video transcripts, and more. Register today at oerproject.com!
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Twitter: https://www.twitter.com/oerproject. Created by Big History Project.
Website: https://www.oerproject.com/Big-History
Facebook: https://www.facebook.com/OERProject/
Twitter: https://www.twitter.com/oerproject. Created by Big History Project.
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- so dramatic for something thats soooooooooo far away and so small. why drama?(1 vote)
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Video transcript
NARRATOR: This star, several
times more massive than our sun, is an element factory. Inside the star, gravity and heat
crush and restructure atoms, forming elements including
metals like aluminum and iron that will spread out
into the cosmos when the star collapses
and explodes as a supernova. The supernova's energy
transforms more atoms. CRAIG BENJAMIN:
In this process, all of these other elements
are cooked up, if you like, including silver. NARRATOR: But supernovas
don't make gold. These do:
the ruins of two supernovas, each half a million times
more dense than the Earth. They're called neutron stars,
and when they collide, they release more energy than our sun releases
in its lifetime, creating elements heavier
than silver, including gold. But these collisions are rare. There are far more supernovas... ...which is why there's
more silver than gold in the Universe
and on Earth.