- Light travels in a straight line
- It enables us to see
- Light is a form of an electromagnetic wave. It travels from the sun to the earth through a vacuum in outer space.
- The sun is the most important source of natural light.
- Light travels at a speed of 300,000,000m/s ( meters per second )
- We see lightning before hearing thunder as light travels faster than sound. Light travels at a speed of 300,000,000m/s which is faster than sound in air which travels at 340m/s.
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