Here comes the sound. After watching a couple videos demonstrating and explaining the Doppler Effect, learners develop their own understanding of the phenomenon. Scholars draw a sound wave and observe how the perception of the wave...

Ever wonder why a siren sounds different when it's coming toward you than when it's going away from you? It all depends on the motion of the sound waves! The interactive activity demonstrates how the Doppler effect impacts the motion of...

The study of waves is not a quacking matter! Watch as a duck manipulates the behavior of its waves through its motion. Graphs show the frequency and wavelength of the waves. 

Take a look at an organized physics course. The 34-section electronic textbook covers material in AP® Physics 1 and 2. Teachers use the text to supplement lectures and have the class work through the labs. Each section contains...

Given diagrams, scenarios, or illustrations, students will identify the characteristics of the Doppler effect.

Read a passage about the doppler effect in living tissue and answer the follow-up questions.

This lab is designed to have students investigate the changes to wavelength and frequency that occur when the source of the waves is in motion. This video describes the lab: https://youtu.be/eCceYPBR6f4

This is a list of 84 problems and exercises to solve based on the content of Chapter 17: Physics of Hearing from the AP Physics online text.

This is a list of 15 questions based on the major concepts presented in Chapter 17: Physics of Hearing from the AP Physics online text.

This site, in German, offers numerous apps that illustrate common physics principles. Apps are organized into categories: mechanics, oscillations and waves, electrodynamics, optics, thermodynamics, the theory of relativity, physics of...

Questions related to ultrasound and blood flow velocity are provided on this resource. This study resource from Khan Academy provides practice questions for the MCAT.