Crash Course
Acid-Base Reactions in Solution
Ever wonder why old headstones in cemeteries are difficult to read? Learn about acid-base reactions and how these contribute to the defacing of statues and headstones and how improving the way we burn coal has decreased these effects.
Fuse School
Uses of Limestone - Cement, Mortar, and Concrete
This rock is on a roll! Introduce young geologists and environmentalists to the many uses of limestone using the fifth installment in a series of seven. Illustrate the components and properties of cement, mortar, and concrete, all while...
Annenberg Foundation
Annenberg Learner: Soil Formation: Physical and Chemical Weathering
A video that investigates physical and chemical weathering and its effect on soil formation. [4:23]