Kevin

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A/ what is light? **light or visible light is an elctronic wave visible to the human eye, and is responsible for the sense of light** B/What is the main source of natural light? **The sun**

C/What are some other sources of natural light? **Some other natural sources of natural light are flames, moon, and other glaxy based lights.**

D/List as many sources of artificilal (man made) lights as you can. **Candles, torches, gas lamps, neon light, matches and Flouresent lighting.** E/ How fast does light travel? **186 262 miles a second**

F/ How long does it take sunlight to reach Earth? **8 and a half minutes**

HWho invented the light bulb? **Thomas Edison and he invented it in the 18 hundreds** I/ Circle the correct word in the bracket. **(straight)**
 * G/** What is the difference between reflection and reflaction? **They have different behavior when it occurs to a wave for example light, sound or seismic encounters**.
 * J/ Why is light so important for the Earths surviaval? without light The earth will be pitched black all the time and nothing can seen, plants cannot grow, and ultimatly there will be no life on Earth.**