This video is designed to help introduce Middle School students (or older students) to wave properties: amplitude, crest, trough, frequency, wave speed and velocity period, reciprocal relationship between frequency and period. br br You can download the free Science Video Worksheet that we made for this video at the following link: br Credits:br We used some excerpts from some our video on Light Transmission.br br We thank the following person and institution for permission to include his amazing images.br * Dr. Dan Russell of Pennsylvania State University.br br Other free resources we've made:br - For links to many free educational resources, please visit our website (no 3rd party advertising, no subscriptions, no paywalls): br - For our free apps for Apple's Mac and iPad (collects no data, no advertising, no subscriptions, no paywalls, no in-app purchases), please visit our page on the Apple App Store.