How is refraction useful?

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4. Which is an example of refraction?
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6. What is reflection in simple words?
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Tags

1. #changes
2. #materials
3. #lenses
4. #always
5. #light
6. #refraction
7. #image
8. #glass
9. #direction
10. #convex
11. #bends
12. #actually
13. #larger
14. #magnifying
15. #speed
16. #water
17. #appears
18. #transparent
19. #slows
20. #through
21. #moves