Episode 6 — Matter & Materials - Optical Phenomena

Line Spectra

Learners will be able to:

• Explain the phenomenon of electrons returning to their ground state after being excited by photons. • Identify how the energy levels of an atom determine which colours of light it absorbs and emits. • Describe the relationship between photon energy, frequency, and wavelength of light. • Sketch a diagram illustrating the absorption and emission spectra of an element. • Explain why the sky appears blue due to the interaction of sunlight with oxygen and nitrogen in the atmosphere.