This program introduces students to the general characteristics of rocks and discusses the components of rock classification. On-location footage from throughout North America vividly depicts characteristics and origins of the three major rock types: igneous rocks, sedimentary rocks, and metamorphic rocks. Important terminology includes: geologist, texture, grains, mineral composition, lava, magma, sediment, and compaction.

Originally released by Visual Learning, 2008. Streaming video file encoded with permission for digital streaming by Infobase on April 18, 2015. Teacher's guide available under Additional info tag. Also available as DVD (DV2238).

What are Rocks? (2:06); --Grouping Rocks (1:20); -- Rocks from Melting (2:16); -- Rocks from Particles (2:50); -- Changed Rocks (1:55); -- Summing Up (1:05); -- Video Assessment (1:40); -- Credits: Rocks (0:39); .