Are you teaching a unit on Volcanoes? This 30 slide PowerPoint teaches about different volcanic material. It describes and illustrates the following terms: Pahoehoe, Aa, pumice, plutons, sills, dikes, batholith, ash clouds, pyroclastic flows, and volcanic bombs. There are video suggestions throughout the PowerPoint to enhance the lesson.
If interested, you can purchase separately a student note-taking guide that students fill out while viewing to keep them engaged in the learning process.