Acadia Greene is at it again. In the summer she used science to figure out who was raiding her blueberry bushes. Now she's leading a campaign to clean up a local pond; figuring out why leaves change color; learning about time zones and germs; and discovering why we might all be drinking dinosaur pee. "Conduct an experiment," her parents tell her whenever she has a new mystery to solve. "Use the scientific method." So Acadia does science. And so can...

An introduction to geology of the Earth discusses the different types of rocks, the rock cycle, and plate tectonics, using cake as a model to explain the various concepts.