Generate a sentence that answers this question: "refraction is when light bends and when it stops producing light after hitting something its its".

Answer: refraction is when light bends

Generate a sentence that answers this question: "A switch turns something on because:".

Answer: pushing a button sometimes completes a circuit

Generate a sentence that answers this question: "To look at an eclipse you might be able to use".

Answer:
looking directly at an eclipse of the Sun causes harm to the eyes