"The rock cycle is like a well oiled clock. Take out one gear and the rest falls with it. The rock cycle is very dependant on Ingneous rocks or there would be no rocks. They also depend on Metamorphic, take out metamorphic and you run out of lava to make rocks from. If you take out sedimentary rocks there would be no rocks to turn into metamorphc, and when theres no metamorphic, no more rocks."
"The rock cycle is like a bicycle. It only operates when energy is applied."
A work sheet on the rock cycle...
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.