Introduction to Light Lesson for Middle School
- 1. LIGHT
- 2. Objective Explain light waves and particles Inquiry Questions: How does light combine to form colours?
- 3. What is light? Light is a type of energy called electromagnetic radiation. It behaves as both a particle and wave
- 5. Light Particles Light comes in packets called photons These act like particles
- 6. Waves and light Light is a type of wave called electromagnetic; it has frequencies and wavelengths.
- 7. Wave frequency - recap Is the number of times that it passes a fixed point per unit of time. We count the number of crests that pass one fixed point per time. The higher this number, the higher the frequency Higher frequency light has shorter wavelengths.
- 8. Light and Energy Light is a type of energy (electromagnetic energy) The amount of energy depends on the frequency and wavelength of light. The higher the frequency and shorter the wavelength the more energy
- 9. Which of these waves has the Highest frequency? Which has the most energy?
- 10. Electromagnetic spectrum Scientists classify light by the amount of energy it has into the electromagnetic spectrum
- 11. What kind of electromagnetic radiation has the most energy?
- 12. Which side of the visible spectrum (which colour) has the most energy and which the least energy? How can you tell?
- 13. The human eye is not capable of "seeing" radiation with wavelengths outside the visible spectrum. Ultraviolet radiation has a shorter wavelength than the visible violet light. Infrared radiation has a longer wavelength than visible red light.
- 14. Color and light Wavelength, Frequency, and Energy Predict the energy for each color from 1 - 7
- 15. Our eyes are sensitive to light which lies in a very small region of the electromagnetic spectrum called "visible light". Visible light corresponds to a wavelength range of 400 - 700 nanometers (nm) The visible colours from shortest to longest wavelength are: violet, blue, green, yellow, orange, and red.
- 16. White and black The white light is a mixture of the colours of the visible spectrum. Black is a total absence of light.
- 17. Colour Simulation Please note that in art, the primary colors are yellow, blue and red BUT for scientists, the primary colors are RED, BLUE and GREEN. Physics Simulation: RGB Color Addition Worksheet for simulation