Light Energy
Light-a form of energy that travels in straight lines in all directions. It can behave in one of 3 ways when it encounters an object.
1. Reflection-light bouncing off an object to our eyes
2. Absorption-light can be absorbed by objects. The object soaks it in like a sponge.
3. Refraction-light is bent when it passes from one substance to another.
**Rainbows are formed by refraction. Sunlight passes through water droplets in the air, and the water droplets make the light bend. Some of the colors bend more than other and they are separated to form a rainbow.
Objects can be:
Transparent-(clear) light rays can pass right through
Translucent-light rays can pass though, but they stop going in straight lines and scatter many directions
Opaque-light can’t pass through it at all
1. Reflection-light bouncing off an object to our eyes
2. Absorption-light can be absorbed by objects. The object soaks it in like a sponge.
3. Refraction-light is bent when it passes from one substance to another.
**Rainbows are formed by refraction. Sunlight passes through water droplets in the air, and the water droplets make the light bend. Some of the colors bend more than other and they are separated to form a rainbow.
Objects can be:
Transparent-(clear) light rays can pass right through
Translucent-light rays can pass though, but they stop going in straight lines and scatter many directions
Opaque-light can’t pass through it at all
Videos
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Why we see colors
Interactives
One last thought...
If you could travel at the speed of light, you could go around the Earth 7.5 times in one second.
If you could travel at the speed of light, you could go around the Earth 7.5 times in one second.
Speed of Light
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