Your Guide to Science Fair Topics, Ideas, Experiments, and Winning Displays
Question: What causes some objects to glow under a black light? Black lights give off Ultraviolet A light, which is a type of high-energy invisible light (radiation). Photons are packets of light energy. UV light photons have a higher energy than do the photons for visible light. Materials that glow under a black light contain [...]
Question: Why do scorpions glow under a black light? Answers: The scorpion has phosphors in its exoskeleton. A phosphor is a term used to describe any substance that can absorbs UV radiation and release visible light. Both UV radiation (light) and visible light are forms of electromagnetic radiation-EMR. The UV light has much higher energy [...]
Question: What is a Photon? Answer: Electromagnetic radiation is a form of energy that is released by an atom. This energy is made up of many small particle-like packets that have energy and momentum but no mass. These particles, called photons, are the most basic units of electromagnetic radiation. Electromagnetic radiation is often referred to [...]
ABOUT ME: Hi, I am Janice VanCleave, author of 50 best-selling science experiment books for children ages 4 through high school. I taught science for 27 years.
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