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+ ward ' s science Page 1 Light Waves and Phosphorescence Submitted by: Patrick A. Recommended Grade Level(s): Appropriate for: Grades 6–8 Time Requirements: Activity Time: 1–2 hours Teaching Topics & Concepts: The Practice of Science, Nature of Science, Forms of Energy National Science Standards Alignment SC.6-8.N.1.1. Define a problem from the curriculum, use appropriate reference materials to support scientific understanding, plan and carry out scientific investigation of various types, such as systematic observations or experiments, identify variables, collect and organize data, interpret data in charts, tables, and graphics, analyze information, make predictions, and defend conclusions. SC.7.P.10.1. Illustrate that the sun's energy arrives as radiation with a wide range of wavelengths, including infrared, visible, and ultraviolet, and that white light is made up of a spectrum of many different colors. SC.7.P.10.2. Observe and explain that light can be reflected, refracted, and/or absorbed. SC.7.P.10.3. Recognize that light waves, sound waves, and other waves move at different speeds in different materials. Materials: • Phosphorescent Wall — A 90s toy called "Nickelodeon's Flash Screen" works great. If not available, then a poster coated in phosphorescent zinc sulfide will work and these are available at several DIY science websites and store. You can also make your own with Zinc sulfide phosphorescent powder, white latex paint, and a poster board. • Multicolored flashlights of every color in the rainbow — ROY G. BIV — Red, Orange, Yellow, Green, Blue, Indigo, and Violet. Works best if the produce narrow beams of light. • A light capable of making a flash of light — like a camera flash. • A very dark room. Background Information, Activity Setup: • Students should be already familiar with the properties of waves such as wavelength, frequency, crests, troughs, mechanical vs electromagnetic, etc. • Begin with a bell work question asking students to guess how glow in the dark materials work. This content is being brought to you by the Ward's World, Science By You program. This program brings lesson and classroom activity ideas directly from science teachers around the nation right to you. From best practices to activities, Science by You offers inspiration for every subject and every grade level. Interested in sharing your own content? Learn how today. PMS200 Black 70% Cool Gray 10 Black Astra Regular get for free from dafont.com

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