- Refraction is when light bends
- Refraction of light can split light into lights of different color
- Therefore, refraction is when light bends and is split into lights of different color

- Refraction is when light bends and is split into lights of different color
- The rainbow is made of all different colors in visible light
- So, a rainbow is formed by refraction of light by splitting light into all different colors

Hence, a rainbow is formed by refraction of light by splitting light into all different colors
[Question]Which process causes light to bend and form a rainbow?
[Context]- Refraction is when light bends 
- The rainbow is made of all different colors in visible light 
- Refraction of light can split light into lights of different color