Simulations, Analogues, and Models

All three types of rocks can be made using food items as models and analogues.

Igneous rocks can be modeled using peanut brittle. The shiny butter part shows that the rock went through heat. A hard candy such as a candy can can be used to show metamorphic rock because all the stuff is melted together to look like one. Sedimentary rock can be modeled using rice krispies because the krispies are still chunky and held together by compacted rock (marshmellow) and you can still tell what the krispies are.