Students examine the biology topic of ecology. The tutorial includes definitions, questions, and pictures on rock cycles.

Did you know the rock cycle is a continuous cycle that takes hundreds of millions of years? This webpage explains how sedimentary, metamorphic, and igneous rocks are formed. It also gives examples of each type of rock. Also includes a...

[Free Registration/Login may be required to access all resource tools.] Summarizes the key points about how the three types of rocks form and convert from one to another. Includes a few questions to check for understanding.

Find out how rocks and rock layers change with erosion and weathering.

Students act out a type of rock, igneous, sedimentary, or metamorphic, for others to guess.

This is a large collection of resources on cycles of nature and the Earth. There is a constant exchange of the elements between air, earth, water, plants, and animals. Most biological processes wind up back where they started. These...

Explore the differences between minerals and rocks.

Consider the processes the rocks on the surface of the earth have gone through.

What are rocks? Learn about the different types of rocks and how they are formed.

Explains how rocks are classified into three basic groups.