1. SOUND & LIGHT
Coach J

2. What is Sound?
Sound is a form of energy that travels in longitudinal waves
The energy is
caused by vibrations

4. Pitch
How high or low the sound seems to be

5. AMPLITUDE The more energy a sound wave has, the higher the amplitude
The higher the amplitude the louder the sound

6. Sound Quality Even, smooth waves produce pleasant sounds
Rough, un-even waves produce noise

7. Pitch and Wavelength

8. Breaking glass with sound

9. Electromagnetic radiation Transverse waves
What is Light?
Light waves: consist of energy in the form of electric and magnetic fields
Electromagnetic radiation
Transverse waves

10. Electromagnetic Spectrum

12. REFLECTION: light wave hits material, energized electrons vibrate slightly, then send energy back out. Light
wave doesn’t
fully penetrate the material.

13. Law of Reflection
The incidence ray and the reflected ray are equal.

14. REFRACTION
The bending and scattering of light

17. DIFFRACTION
The bending of waves around small objects, and spreading out of waves past small openings

20. http://www. woodlands-junior. kent. sch. uk/revision/Science/physical

21. CONCAVE – curved in, the inside of a spoon
CONVEX – curved out, the outside of a spoon

22. EXAMPLE

23. MIRRORS…

24. LENSES…