Knowledge of the physics and chemistry of the planet's "bones" is essential to a complete understanding of Earth science. Ranging from the Mohs scale and specific gravity to silicates, carbonates, and halides, this video delves deeply into the composition, properties, and classification of rocks and minerals. An element of forensic-type analysis is also brought into play, since any stony formation represents a portion of the planet's history and local conditions.

Encoded with permission for digital streaming by Infobase on June 13, 2006. Learn360 is distributed by Infobase for Films for the Humanities & Sciences, Cambridge Educational, Meridian Education, and Shopware. Teacher's guide available under Additional info tag.

Geologic Time: Elements, Minerals, and Rocks (2:33) -- Silicates and Non-Silicates (3:48) -- Properties of Minerals (5:36) -- Types of Rocks: Igneous Rocks (2:23) -- Types of Rocks: Sedimentary Rocks (3:40) -- Types of Rocks: Metamorphic Rocks (1:43) -- The Rock Cycle (1:57).