The Astronomy Practice Test is a comprehensive study guide to help students review Physical Science Standards 4 (Astronomy). The questions help students review the three types of galaxies, characteristics of stars, the H-R Diagram, properties of planets, similarities between inner and outer planets, eclipses, asteroids, and comets. There is a detailed answer key included to explain and clarify each question. In my class, I assign a group leader and give them the answer key to help them facilitate a discussion during group review. This has been an effective group review strategy and I hope it works well for your students.