How to use information from the present to understand the past.
This video explains how rocks get their features and how the ocean plays into it.
Reviews the use of information from the present to understand the past.
Come up with questions about a topic and learn new vocabulary words to determine answers using an Ask, Answer, Learn table.
A geologist faces down the idea that geological events only happen gradually. He shows that giant ice age floods ripped through the Pacific Northwest.
Nicholas Steno made many contributions to natural science, particularly to stratigraphy and to the idea of uniformitarianism.