Have you ever wondered why astronauts float in space or why you would weigh less on the moon? Read this book to find out about mass and weight and how they are related to gravity.
Includes a glossary of bold-faced vocabulary words, reading activities, an index of terms, and an answer key.
Readers Advance is a series of full-color nonfiction science readers designed to address the challenges of reading in a content area. Each student book is written around a single science concept. Each full-color reader focuses on a popular science topic currently being taught at each grade level.