The Science of Light Waves

The Science of Light Waves book cover — CATCH A THE SCIENCE LIGHT WAVES Robin Johnson 2 Crabtree Publishing Company www Crabtreebooks com

The Science of Light Waves — page 1 — LIGHT OF DAY The Sun shines through your window with the first light of day You stumble out of bed and reach for the light switch At school you stare at a bright computer screen and hope for a bright idea Later your video game flashes with colorful lights while your desk lamp beams down on the homework you should be doing Tiny fireflies and tall streetlights glow in the night sky You turn out the lights and crawl into bed Good night light WHAT IS LIGHT Light is the brightness that lets you see the world around you It shines in many different ways and comes from many different sources A light source is something that gives off light The Sun is a natural source of light There are other light sources that people make Some lights are bright and others are

The Science of Light Waves — page 2 — WE NEED LIGHT We need light to see the world around us and do many of the things we want or need to do Light helps us communicate and send messages to others To communicate means to share information For example drivers use lights on their cars to signal to other drivers that they are turning or stopping Light also helps us move safely from place to place Colored traffic lights tell us when to stop and go Flashlights take us down dark paths and streetlights guide us home WHAT DO YOU THINK so Think of all the lights you use each day How do they help you see communicate and move safely e

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