1. The Nature of Waves Learning Goals: Recognize that waves transfer energy, but not matter. Define mechanical waves. Compare and contrast transverse and compression (longitudinal) waves.

2. WAVES Definition: A traveling disturbance that carries energy through matter and space Waves transfer energy without transferring matter. Waves are produced by something that vibrates.

3. WAVES Vibrations: Movement that follows the same path, repeatedly Most waves are caused by a vibrating object.

4. WAVES Mechanical Waves: Waves that require a medium Two types: transverse and compression (longitudinal) Examples are seismic and sound waves. Medium: matter (the stuff) through which a wave travels Examples include water, air, and solids.

5. TYPES OF WAVES TRANSVERSE Motion of particles is perpendicular to the motion of the wave. Examples – electromagnetic waves, waves on a rope, water waves Draw an example in your notes. (Think of the slinky.) COMPRESSION (LONGITUDINAL) Particles in a medium will vibrate parallel to the direction of wave motion. Example – sound waves Draw an example in your notes. (Think of the slinky.)