Learn vocabulary terms and concepts taught in 9, 10, 11, and 12th grade high school Earth science classes. Includes multiple-choice quizzes, flashcards, glossary, and dictionary by chapter and topic. Chapters Ch 1: What is Earth Science? Ch 2: Studying Earths Surface Ch 3: Earth's MineralsCh 4: RocksCh 5: Earth's Energy Ch 6: Plate Tectonics Ch 7: EarthquakesCh 8: VolcanoesCh 9: Weathering and Formation of SoilCh 10: Erosion and Deposition Ch 11: Evidence About Earth's PastCh 12: Earth's HistoryCh 13: Earth's Fresh WaterCh 14: Earth's OceansCh 15: Earth's AtmosphereCh 16: Weather Ch 17: Climate Ch 18: Ecosystems and Human PopulationsCh 19: Human Actions and the LandCh 20: Human Actions and Earth's ResourcesCh 21: Human Actions and Earth's WatersCh 22: Human Actions and the AtmosphereCh 23: Observing and Exploring SpaceCh 24: Earth, Moon, and SunCh 25: The Solar SystemCh 26: Stars, Galaxies, and the Universe Final: All Chapters Content and vocabulary for this study aid has been reviewed by practicing teachers, domain experts, copyeditors, and technical editors. Save correct and incorrect answers and send to email for review. Send multiple-choice quiz questions by email to friends. Post score for global ranking. App content is licensed from the CK-12 Foundation, an organization with a mission to reduce the cost of textbook materials for the K-12 market both in the U.S. and worldwide.