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Course: Big History Project > Unit 4
Lesson 2: What Was Young Earth Like? | 4.1- ACTIVITY: DQ Notebook 4.1
- WATCH: What Was The Young Earth Like?
- WATCH: Earth and the Early Atmosphere
- ACTIVITY: Infographic — Chemical Abundances: Earth’s Crust
- ACTIVITY: Infographic — Chemical Abundances: The Sun
- ACTIVITY: Infographic — Chemical Abundances: The Universe
- ACTIVITY: This Threshold Today
- ACTIVITY: Evaluating Writing
- Quiz: What Was Young Earth Like?
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ACTIVITY: Infographic — Chemical Abundances: The Universe
Hydrogen is the most abundant element in the Universe and helium is second. Together they make up roughly 74% and 24% of all matter in the universe respectively. Download a PDF of Chemical Abundances: The Universe infographic.
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how do they know the chemical abundance of the universe? Is there a way to measure it? I am confused on how they measure/know the chemical abundance of the universe.(1 vote)