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Light comes from the sun. Light also comes from different sources like electric lamps, fires and torches. Light rays cannot bend around things.

How does light travel?
All light travels in straight lines.

Light travels in lots of straight lines called rays.

Shadows are made when light is blocked by an object. When an object is close to a light, it blocks more of the light rays. The object then makes a big shadow. When the object is far away from the light, it makes a smaller shadow.

Reflection of light
When light falls on some objects it is reflected. That means, it travels backwards after hitting the object. Smooth, shiny objects reflect more light.

Light can pass through some objects.
  1. Glass
  2. Clean water
  3. Clear plastic
Light cannot pass through most solid objects.
  1. Rubber
  2. Metal
  3. Wood
  4. Stone
Rainbow Colors
Light is made up of seven colors. These are the seven colors of the rainbow which can be remembered by using the keyword 'VIBGYOR'. These are the rainbow colors in order.
  1. Violet
  2. Indigo
  3. Blue
  4. Green
  5. Yellow
  6. Orange
  7. Red