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In this activity, students experience a demonstration of light scattering that explains the blue colors in the Intersetllar Medium (ISM) nebulae, and the reddening of stars viewed through the ISM. It also explains the blue appearance of the sky on Earth and the reddish appearance of the Sun during sunsets. The demonstration is best done before or during a lesson on the ISM when light scattering is discussed. This activity is one of two supporting the scientific investigation of the ISM, and is linked to reading material, reading review questions and problems, a teacher answer sheet, and glossary.
This resource is located on page 6 of the PDF document.