The science of sound helps students learn that sound is energy traveling in waves as vibrations transfer the energy through various media: solids, liquids, and gases. In addition to learning about the physical science of sound, students can learn about the sounds of different animal species: how sounds contribute to animals' survival, and how humans are learning to explore the uses and properties of species' sounds. Students learn to interpret the visual representations of sounds using the technology of spectrograms. Sound explorations include physical and life science applications for elementary school students as we help them probe their aural world. (Contains 4 figures and 6 online resources.)