Review key terms and skills for the Doppler effect, including how to interpret wavefront diagrams.

[Free Registration/Login may be required to access all resource tools.] Discusses what the Doppler Effect is and how it occurs.

A simulation of the Doppler Effect, where a change in wave frequency can be observed from the reference frame of the wave source, an observer, or the medium.

In this module, students investigate the properties and behavior of different types of waves.

[Free Registration/Login may be required to access all resource tools.] Recognize how redshift suggests the universe is expanding.

[Free Registration/Login may be required to access all resource tools.] Definition of wave frequency and how it is related to the energy of a wave.

While some of the pages on this site have yet to be filled, the pages that are complete are comprehensive. For example, pages on friction, heat, and the Doppler effect are illustrated and explain relevant formulas. A biography page...

This journey will help you solve big questions about the universe. You will be able to see beyond human capabilities and will learn what scientists are discovering.