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Discover the significance of energy transformations with Europium, a unique element named after Europe. Learn how Europium is used in phosphorescent paint and old CRT TVs, revolutionizing color displays. Dive into the world of kinetic energy in rollercoasters and observe where objects possess the most kinetic energy. Review concepts like energy changes, engage with seventh-grade physics topics, and prepare for a chapter quiz. Don't miss out on this last call for late work – let's explore the wonders of Europa's elemental legacy together!
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Warm up 4/12/13 • Question: Where does an object on a rollercoaster have the most kinetic energy? • Answer: • At the lowest point on the rollercoaster. • Goal: I will learn about energy transformations
Element of the day • 63 – Europium – Eu • Europium is named for the continent of Europe. 4 elements are named after countries – germanium (32), polonium (84), francium (87) and americium (95). • Europium is used in phosphorescent paint (glow in the dark). • Europium vapors are also used in old CRT (cathode-ray tube) TVs – it was the element that took TVs from having shoddy color to vibrant colors with its bright reds. They are also used in CFL bulbs.
Last call for late work. • Review Murray • Review rollercoaster lab • Notes • How does energy change? • GR 7.2 & 7.3 • Tonight’s HW • GR 7.2/7.3 • Ch 7 Quiz next Friday Agenda / HW