7th Grade Crossword 1 2 3 4 5 6 7 8 9 10 www.CrosswordWeaver.com ACROSS 3 A curved, transparent object that refracts light. 4 A lightweight and less expensive type of convex lens invented by French physicist Augustine Fresnel in 1822. 5 The release of light energy by particles of matter that have absorbed extra energy. 7 The passing of light through matter. 8 The bending of a light wave as it passes at an angle from one medium to another. 9 When light waves bounce off an object; allows you to see objects that don't produce their own light. 10 A mechanism on an aircraft carrier that uses multi-colored lights and fresnel lenses to help a pilot land on the ship. DOWN 1 A lens that is thicker in the middle than at the edges; light waves passing though it refract (bend) towards the center. 2 A lens that is thinner in the middle than at the edges; light waves passing through it refract (bend) away from each other. 6 The transfer of energy carried by light waves to particles in matter. WORD BANK: Absorption, concavelens, convexlens, fresnellens, lens, opticallandingsystem, reflection, refraction, scattering, transmission.