Unit 1 Introduction to Earth SciencePassage A The Science of GeologyReading Skills Vocabulary in ContextPassage B Earth System ScienceUnit 2 Earth History and Life EvolutionPassage A Dating Rocks and Fossils Using Geologic MethodsReading Skills Signpost Language （Reading Road Map）Passage B Fossil Files——"The Palaeobiology DatabaseUnit 3 Plate Tectonics and Earth StructurePassage A Continental Drift： an Idea Before Its TimeReading Skills Signpost LanguagePassage B Plate TectonicsUnit 4 Mineral and RockPassage A MineralReading Skills Examples as Contextual CluesPassage B Classification of RocksUnit 5 Geomorphology and GeographyPassage A Geological Process——Weathering and ErosionReading Skills Recognising Differences Between Facts and OpinionsPassage B Disappearing DeltaUnit 6 Climate Change and AtmospherePassage A Effect of Climate ChangeReading Skills Guessing Meaning from ContextPassage B Sun's Fickle Heart May Leave Us ColdUnit 7 Natural Resources and Environment ProtectionPassage A Oil and GasReading Skills Skimming and ScanningPassage B Tidal PowerUnit 8 Geological HazardPassage A TsunamiReading Skills Understanding the Sentences with Negative WordsPassage B EarthquakeGlossaryKeys