Science Cloud

Fully online: Students do activity completely online. Editable: You save a copy of the files for your own.Google: Uses Docs, Slides, and FormsFossils can be used to correlate rock layers from distant places.  A critter that was geographically widespread (existed in many areas) and existed for a short time (only found in a few layers of rock) would be the most useful in correlating rock layers.  These are called index fossils. Students use fossils to correlate rock layers from distant locations.