1. Introduction to Waves

2. Rhythmic disturbances that carry energy without carrying matter
Definition:
Rhythmic disturbances that carry energy without carrying matter

3. 2 types of Waves
Mechanical Waves – need matter (or medium), to transfer energy
2. Electromagnetic Waves – DO NOT NEED matter (or medium) to transfer energy

4. Transverse Wave definition:
-vibration occurs at right angles

5. example

6. The wavelength is the horizontal distance, either between the crests or troughs of two consecutive waves.

7. Compressional, or (longitudinal) wave definition:
Moves back and forth parallel to the direction it travels
example- sound or seismic waves

8. Sound

9. Sound waves need a medium

12. Definition: transfers energy along electromagnetic spectrum through radiation

13. Examples:
Radio waves, microwaves, light, x-rays