"The Earth's outer core is like the juice of the peach. It is so hot that the metals in the outer core are all in the liquid state. The inner core is like the pit of a peach."
The links is worksheet for basic earth parts.
METAMIA is a free database of analogy and metaphor. Anyone can contribute or search. The subject matter can be anything. Science is popular, but poetry is encouraged. The goal is to integrate our fluid muses with the stark literalism of a relational database. Metamia is like a girdle for your muses, a cognitive girdle.