This is a textbook for seventh-grade students studying science. According to the standards for the students' CBSE curriculum, the textbook has been recommended and published. These books provide a strong emphasis on experiential learning so that children learn through asking questions, watching, observing, investigating, and doing. Preetika Sawhney is the author of this book, which published by Preetika Sawhney V-Connect Education (New Saraswati House) for Class 7.