![]() Again, ask the students if wax paper transmits light. Next, hold up the flashlight to a piece of wax paper.(Answer: Yes) Tell them that the glass is transparent to light. Ask students if the glass transmits (lets through) the light. Hold up a flashlight to a clear piece of glass.Now I need you all to watch carefully while I show you some examples of light in action! The five words that we are going to talk about today are: transparent, translucent, opaque, reflection and refraction. Today we are going to focus on learning five words that scientists and engineers use to explain how light interacts with different types of objects, or materials. Light, even though it is all around us, can be tough to understand. Ask students what they think this lesson is going to be about.Īngie, Harmon and Fisherman Frank desperately want to see the ship with their own eyes, and to do that they need light. Dip a pencil in a glass of water while shining some light on it (to see the pencil bend at the water/air interface). Using a flashlight, shine light on a dark wall, on a mirror and on aluminum foil. Teacher demonstration: Without saying anything to students, turn off some of the overhead classroom lights and turn on a small lamp in front the students. They want to go down and take a look, but there is no light on the bottom of the ocean. But the bubbles have passed, and Angie, Harmon and Fisherman Frank can now see the outline of a ship on the ocean floor using the sonar. ![]() If you recall, the natural gas bubbles were good sound absorbers, preventing the sonar from reaching the galleon on the bottom of the sea. Students should be comfortable with the material covered in lessons 1-5 of the Sound and Light unit. Provide a basic explanation of the following terms: transparent, translucent and opaque.Give examples of something that refracts light and something that reflects light.Their understanding of how light works enables engineers to create new types of lighting and design light bulbs and fixtures that are more energy efficient and easier on our eyes.Īfter this lesson students should be able to: Without their expertise, our day-to-day sight could be worse (than it might already be) due to poor lighting conditions and eye strain. Lighting engineers design the illumination systems in the places we live and work. Engineers and scientists have created lighting devices to help us see in the dark. This engineering curriculum aligns to Next Generation Science Standards ( NGSS).īeing able to see is crucial for many things that we do everyday. Lessons 1-5 focus on sound, while 6-9 focus on light. This is the first lesson of this unit to introduce light. Students learn the five words that describe how light interacts with objects: transparent, translucent, opaque and refraction.
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