This clearly written book focuses on mechanical and electromagnetic waves and how they travel, transverse and longitudinal waves, the parts of waves, and the characteristics and behaviors of waves. It looks at the ways—including sonar, seismology, and radio astronomy—scientists gain understanding of how waves work, furthering their understanding of Earth and the universe. A clear and simple writing style coupled with relevant diagrams to illustrate the concepts covered helps students grasp concepts that might be difficult to understand using textbooks.