1. Nature of Waves Image Source: Microsoft Office clipart

2. What is a Wave? Disturbance that carries energy through matter or space

3. Most waves travel through a medium Medium – matter through which a wave travels Image Source: Microsoft Office clipart

4. Waves Transport Energy Energy is the ability to do work Waves carry energy because they can do work Image Source: Microsoft Office clipart

5. Energy Spreads Out as Wave Travels Waves spread out in circles that get bigger as the waves move farther from the center As the circles get larger, the energy spreads over a larger area Image Source: Microsoft Office clipart

6. Mechanical Wave Wave that needs medium to transport energy Ex. Sound wave Image Source: Microsoft Office clipart

7. Electromagnetic Wave Does not require a medium to transmit energy Produced by vibration of charged particles Ex. Light Waves

8. Transverse Waves Motion of particles in medium is perpendicular to the motion of the wave Ex. Light Waves

9. Transverse Wave Motion

10. Longitudinal Waves Particles in medium vibrate parallel to the direction of wave motion Also called compressional waves Ex. Sound Waves

11. Longitudinal Wave Motion

12. Sound waves Compressional waves Caused by vibrations in air Can travel through other mediums (wood, water) as well

13. Surface Waves Particles move in circles Occur at the boundary between 2 different mediums Particles move both perpendicularly and parallel

14. Surface Wave Motion

16. Seismic waves Earth’s crust breaks and causes vibrations Seismic waves carry energy outward Compressional and transverse waves Image Source: Microsoft Office clipart