Unit 1 Study Guide Unit 1 Study Guide Vocabulary: Vocabulary: Equator Prime Meridian Global Positioning System (GPS) Geographer Absolute Location Relative Location Contiguous Navigable Tributary Canyon Territory Equator Prime Meridian Global Positioning System (GPS) Geographer Absolute Location Relative Location Contiguous Navigable Tributary Canyon Territory Unit 1 Concepts: Unit 1 Concepts: Continental Divide US Regions and the features of that regions Northeast Southeast Southwest West Midwest Find location Continental Divide US Regions and the features of that regions Northeast Southeast Southwest West Midwest Find location