This engaging physics video explores the fundamental behaviors of waves through the lens of everyday phenomena like rainbows and echoes. The narrator breaks down complex concepts into three primary categories of interaction: interference, reflection, and refraction. By comparing light waves and sound waves, the video demonstrates how the same physical principles apply to different types of energy moving through the world. The content dives deep into specific mechanics, using clear animations and real-world footage. It illustrates constructive and destructive interference using water ripples and sine wave diagrams. It explains reflection through echoes and mirrors, and demystifies refraction (bending light) using a clever analogy involving a kayak turning in water. The relationship between the speed of light, material density, and color is also explained to uncover the science behind rainbows. For educators, this resource serves as an excellent core lesson for Physical Science or Physics units on wave properties. It effectively bridges the gap between abstract wave theory and observable reality. The included review quiz and summary make it a complete learning package, ideal for introducing new concepts or reinforcing standard curriculum regarding how waves interact with matter.