Neon Red
Explain to a first grader why a neon sign looks red.?
Explain to a first grader why the petals of a rose look red and the leaves look green.
Explain to a first grader why you can hear a radio station when there is a building in between you and the station’s antenna, but you can’t see the traffic lights that are on the other side of the building.
Your answers should be simple and easily understood, but accuracy is just as important.Thanks a ton!
Those are all very tough questions to answer both simply and accurately! But if I were explaining it to a 1st grader I'd say something like this.
Neon signs are just see-through tubes with special gas in them. When you run electricity through the gas, it glows red.
The leaves of a rose are green because they're filled with chlorophyll, and chlorophyll is green. The petals have a different chemical in them (I believe it's a type of carotene, but he doesn't need to know that!), and that chemical is red.
Radio waves can go straight through solid objects, but light can't, so you can't see passed certain things.
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