Bold Kids

Composition Of The Earth Bold Kids

If you're wondering how the Earth is made, read on to find out. The Earth's outer layer is made up of solid rock and varies in thickness from three to forty-three miles. This solid layer is the largest, and it is the most dense part of the planet. The outer layer is made of lighter elements such as carbon, uranium, and iron. The inner core is made up of heavier materials and is almost two-thousand kilometers thick.
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