Use this A2-B1 ESL science reading passage to learn why the sky is blue. It includes key vocabulary, reading comprehension questions, and answers for English learners.Reading LevelA2-B1Word Count284 wordsReading PassageOn a clear day, the sky often looks bright blue. But the sky is not painted blue. The color comes from sunlight and the air around Earth.Sunlight may look white, but it is made of..