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Inside a Young Planet
Age 11 · Science
Long ago, a young planet was a hot mixture of rock and metal. Gravity pulled the heaviest metal to the middle, while lighter rock rose and wrapped around it.
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Age 11: open this week
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In the picture
- Metal core: the dense metallic center.
- Mantle: the thick rocky zone around the core.
- Crust: the thin rocky outer shell.
Examples
- A muddy jar left to stand: heavier mud sinks and clearer water rises.
- A peach: a hard pit sits at the center with softer fruit around it.
Key takeaways
- Gravity sorted a young planet’s materials by weight.
- The heaviest metals formed the core, and lighter rock formed the mantle and crust.
Quiz: Inside a Young Planet (Age 11)
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According to the card, what sorted a young planet’s materials by weight?
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Which part of the young planet was made of the heaviest metals?
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What did the lighter rock form on the young planet?
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