Explain the difference interactions that can take place when the beam of light hits the glass tank and then enters the water. Why does the beam lof light change direction when it enters the water?

Question

I need a full response/ explanation. It would really help me out

thanks

Answer 1

https://www.google.com/search?client=safari&rls=en&q=refraction&ie=UTF-8&oe=UTF-8&gws_rd=ssl

Answer 2

Somting