[Free Registration/Login may be required to access all resource tools.] Summarizes the key points about how intrusive and extrusive igneous rocks form. Includes a few questions to check for understanding.

[Free Registration/Login may be required to access all resource tools.] Presents igneous rocks, which form from magma, and the two types: dense, dark mafic and less dense, light felsic. Also covers Bowen's Reaction Series.

Review your understanding of the big ideas under the topic of igneous rocks.

Learn the basics of igneous rock formation.

If you're interested in learning about the igneous rock-forming minerals in seeing multiple pictures of each sample, then this is your site. It also includes the chain that these minerals follow. Click on the PDF link for a printable...

Click on the shelves in this virtual exhibition to learn about the many rocks and minerals that we use in our everyday lives.

Explore the differences between minerals and rocks.

Fourth graders identify rock types by observing key characteristics.

[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.

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...

The purpose of this activity is to introduce students to the basic elements of our Earth's crust: rocks, soils and minerals. They learn how we categorize rocks, soils and minerals and how they are literally the foundation for our...

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

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

Classify rocks and minerals according to their characteristics.

Welcome to Devil's Tower National Park in Wyoming! This highly interactive website reveals the geological processes behind the formation of this unique natural structure.