Science project Science project workwork

Topic –Topic –LighTLighT

LightLight

Light is a form of energy which help to see an object

WHERE DOES LIGHT COME WHERE DOES LIGHT COME FROM?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.

HOW LIGHT TRAVELSHOW 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.

HOW LIGHT TRAVELSHOW 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).

COLORS OF LIGHTCOLORS 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.

LIGHT BOUNCESLIGHT BOUNCESLight 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.

•Topic Topic – – eye

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