Which has the most gravity: a supernova, a white dwarf, or a black hole? What prefix turns the word "town" into a word meaning "center of town"? If grapes cost $1.70 a pound, what will one and a half pounds of grapes cost? Plus onomatopoeia, fusion, equations, the planets, Roman numerals, abstract nouns, capital cities, the periodic table, Grab Bag, and: Which U.S. state is a group of islands? Brain Quest Grade 7 quizzes kids on the stuff they need to know when they need to know it, with 1,500 curriculum-based questions and answers reflecting the latest school standards. Vetted by a panel of America's highest award-winning teachers, and embraced by kids and parents because it flat-out works, Brain Quest opens a world of information and education with its fast-paced question-and-answer format, bright full-color illustrations, and lively attitude.