1. What is light?   Light is a form of energy that helps us see things around us.
2. What is the main source of light on Earth? The Sun is the primary source of light on Earth.
3. Can light travel through space? Yes, light can travel through the vacuum of space because it doesn’t need a medium.
4. What type of energy is light? Light is electromagnetic energy.
5. Does light always travel in a straight line? Yes, under normal conditions, light travels in straight lines.
6. What is reflection? Reflection is the bouncing of light off a surface.
7. What is refraction? Refraction is the bending of light when it moves from one material to another.
8. What happens when light hits a mirror? It reflects off the mirror and changes direction.
9. How does light help us see objects? Light bounces off objects and enters our eyes, allowing us to see.
10. What is absorption in terms of light? Absorption is when an object takes in light and doesn’t let it pass through or reflect.
11. What are luminous objects? Luminous objects give off their own light, like the Sun or a bulb.
12. What are non-luminous objects? Non-luminous objects do not produce light; they can only reflect it.
13. Is the Moon a luminous object? No, the Moon reflects sunlight but does not produce its own light.
14. Can fire be considered luminous? Yes, fire emits its own light and is therefore luminous.
15. Are stars luminous? Yes, stars produce their own light and are luminous.
16. What is a shadow? A shadow is a dark area formed when an object blocks light.
17. Why are shadows formed? Because light cannot pass through opaque objects.
18. What are transparent materials? Materials that let light pass through completely, like clear glass.
19. What are translucent materials? Materials that allow some light through but scatter it, like frosted glass.
20. What are opaque materials? Materials that do not let any light pass through, like wood.
21. What is white light? White light is made up of all the colors of the rainbow combined.
22. What is dispersion? Dispersion is the splitting of white light into different colors.
23. Which object can split white light into colors? A prism can split white light into a rainbow of colors.
24. Which color of light bends the most during refraction? Violet bends the most because it has the shortest wavelength.
25. What causes a rainbow? Rainbows are formed when sunlight is refracted and reflected by water droplets.
26. How fast does light travel in a vacuum? Light travels at about 300000000 meters per second.
27. Can light travel through water? Yes, but its speed slows down and it bends.
28. Why does a pencil look bent in water? Because of refraction—light bends as it moves from water to air.
29. Does light travel faster than sound? Yes, light is much faster than sound.
30. Can light be blocked? Yes, objects can block light and form shadows.
31. What part of the eye receives light? The retina receives light and helps us see.
32. Which cells in the eye detect color? Cone cells in the retina detect color.
33. Why do we see colors in sunlight? Because sunlight contains all visible colors, which are reflected by objects.
34. What happens in darkness? We can’t see in complete darkness because there’s no light reaching our eyes.
35. Why do we squint in bright light? Because our eyes try to control the amount of light entering, protecting the retina.