Dispersion of light results in a spectrum of visible light colors from red to violet (ROYGBIV). The document discusses how dispersion occurs when white light passes through water droplets, forming a rainbow. It also explains that higher frequency light waves have shorter wavelengths and greater intensity, bending more when dispersed, while lower frequency red light bends the least. The electromagnetic spectrum encompasses waves of different frequencies beyond the visible spectrum.

1. DISPERSION OF LIGHT:
ELECTROMAGNETIC SPECTRUM
SCIENCE 8

2. OBJECTIVES
•Envision dispersion of light through video
presentations.
•Explain the hierarchy of colors in relation to energy.
•Infer that red is bent the least and violet is bent the
most due to their wavelength.

3. PROCESS QUESTIONS
• What is dispersion of light?
• What is a spectrum?
• How are rainbows formed?
• What is ‘Electromagnetic Spectrum’?
• How is frequency related to the intensity of light waves?
• Which is the least and most bent among the colors of
the visible light?

4. DISPERSION OF LIGHT
•Splitting of white light into its constituent
colors (ROYGBIV or VIBGYOR).

5. •Band of the colored components of a light
beam.
•Electromagnetic Waves
SPECTRUM

6. RAINBOW
•Dispersion of light (sunlight) by droplets of
water.

7. ELECTROMAGNETIC SPECTRUM
•Waves with different ranges of frequencies.

9. LET US TAKE A CLOSER LOOK AT THE
ELECTROMAGNETIC SPECTRUM!!!

11. GENERALIZATION
•What results in the dispersion of light?
•What is the relationship of frequency to the
hierarchy of light?
•How does frequency affect the bending of light
wave?

12. GENERALIZATION
• Dispersion of light results in a spectrum of visible light,
namely, Red, Orange, Yellow, Green, Blue, Indigo, Violet
(ROYGBIV).
• The higher the frequency (shorter wavelength), the
greater the intensity or energy of light—directly
proportional.
• If frequency is lower (wavelength is longer), light bends
the least—RED. If frequency is greater (wavelength is
shorter), light bends the most—VIOLET.

13. CHECK YOUR UNDERSTANDING!
Short Response: ¼ Crosswise ANSWER DIRECTLY!
1. What is dispersion of light?
2. What colors are dispersed from the refraction of light? Enumerate
according to decreasing frequency.
3. Describe the intensity of light in terms of wavelength or frequency.
4. Among the colors of the visible light, what makes red, the least bent,
and violet, the most bent?

14. ASSIGNMENT
•Research on the different uses of
electromagnetic spectrum.
•In a ½ sheet of paper, give at least two (2)
uses of electromagnetic spectrum.

15. VIDEO LINKS:
(IN ORDER OF PRESENTATION)
#1 https://www.youtube.com/watch?v=zx07PShjJmk
#2 https://www.youtube.com/watch?v=1bpmI3wdqW8
#3 https://www.youtube.com/watch?v=m4t7gTmBK3g
#4 https://www.youtube.com/watch?v=Aggi0g67uXM