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Course: Big History Project > Unit 4
Lesson 1: Earth & the Formation of Our Solar System | 4.0- ACTIVITY: Planet Card Sort
- WATCH: Unit 4 Overview
- ACTIVITY: Unit 4 Vocab Tracking
- WATCH: Threshold 4 — Earth & Solar System
- ACTIVITY: Threshold Card —Threshold 4 Earth & the Solar System
- WATCH: How Did Earth and the Solar System Form?
- READ: How Our Solar System Formed
- READ: The Rocket Scientist - Mary Golda Ross: Graphic Biography
- READ: Gallery — Earth & Solar System
- Quiz: Earth & the Formation of Our Solar System
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ACTIVITY: Threshold Card —Threshold 4 Earth & the Solar System
Each threshold follows a consistent pattern of creating greater complexity in the Universe. Download a PDF of Threshold 4 Earth & the Solar System.
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- do gas planets have crust, mantle, core or just hydrogen and helium?(4 votes)
- Most likely just gas, but nobody knows for absolute sure(2 votes)
- Dose Jupiter have a core?(2 votes)
- yes. Jupiter dose have a core(3 votes)
- why is earth the only planet with oxygen(0 votes)
- Free molecular oxygen is a very reactive chemical. It isn't typically found in large amounts unless it is continuously produced. On Earth, life is one major process that is producing significant levels of free oxygen. That is also why it is looked for on other planets as an attempt to find other life.(5 votes)
- If it was actually real, what are the chances of Planet 9 (or Planet X) going rogue or having gone rogue already due to another star passing by?
I mean, according to the resonance of the 4 (or 5, in this case) gas giants being broken early in the Solar System's life (within the first couple of hundred million years), the hypothetical Planet X must've been sent over a tenth of a light year away.(1 vote) - do you guys think that they'll teach us about all evolutions till humans?(1 vote)
- is the solar system just dust(1 vote)
- “The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars. We are made of star stuff”.
- Carl Sagan.(1 vote)
- When did the first star was recoded in histrry(1 vote)
- how did they find evidence on mars that there used to be running water(1 vote)
- also, near the poles, underground, there is evidence of liquid water flowing underneath the surface, from satellite imagery showing drifts of the martian soil.(3 votes)
- 99% of material in a gas cloud goes into making a star and 0.1% into planets.
Is this because 99% of the material in a gas cloud is hydrogen and helium, which gravity draws into a star?(1 vote) - How did they figure out the pluto couldnt be seen And why?(1 vote)
- Pluto can be seen with a powerful enough telescope.(1 vote)