Use this A2-B1 ESL science reading passage to learn what gravity is. It includes key vocabulary, reading comprehension questions, and answers for English learners.Reading LevelA2-B1Word Count197 wordsReading PassageIf you drop a pencil, it falls to the floor. If you throw a ball up, it comes back down. These things happen because of gravity.Gravity is a kind of force. Earth has gravity, so it pu..