Light

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Light

  1. 1. Science project work
  2. 2. Topic – LighT
  3. 3. Light Light is a form of energy which help to see an object
  4. 4. WHERE DOES LIGHT COME FROM? Most light comes from things that give off heat. Natural light comes from the Sun, other stars, and certain animals that glow in the dark. Artificial light comes from things that people make. The flame of a candle gives off artificial light. Electric light bulbs give off artificial light.
  5. 5. HOW LIGHT TRAVELS Light travels at very high speed. It travels through space faster than anything we know of. You can tell that light travels faster than sound when you see lightning. You’ll notice that you usually have to wait a few seconds after the lightning bolt to hear thunder. Thunder is the sound that lightning makes.
  6. 6. HOW LIGHT TRAVELS The speed of light through empty space is about 186,000 miles per second (about 300,000 kilometers per second). Astronomers talk about vast distances in space as light-years. A light-year is how far a beam of light can travel in one year, or about 5.8 trillion miles (about 9.5 trillion kilometers).
  7. 7. COLORS OF LIGHT Sunlight is made up of every color in the  rainbow. When sunlight is spread out into all  its colors, it makes what scientists call a  spectrum. A rainbow is a spectrum. In a  spectrum, each color flows into the color next  to it.
  8. 8. LIGHT BOUNCES Light travels in a straight line until it runs into  something. What happens then depends  upon what the light runs into. Light rays go right through transparent  substances. Clear window glass is  transparent, so sunlight goes right through.  That is why you can see through a  windowpane.
  9. 9. •Topic – eye
  10. 10. $ THANKS FOR YOUR KIND CONSIDERATION $

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