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| Introduction to Earth’s Systems |
| Lesson 1: Matter and Energy in Earth’s System |
| Lesson 2: Surface Features in the Geosphere |
| Lesson 3: The Hydrosphere |
| Weather in the Atmosphere |
| Lesson 1: The Atmosphere Around You |
| Lesson 2: Water in the Atmosphere |
| Lesson 3: Air Masses |
| Lesson 4: Predicting Weather Changes |
| Lesson 5: Severe Weather and Floods |
| Minerals and Rocks in the Geosphere |
| Lesson 1: Earth’s Interior |
| Lesson 2: Minerals |
| Lesson 3: Rocks |
| Lesson 4: Cycling of Rocks |
| Plate Tectonics |
| Lesson 1: Evidence of Plate Motions |
| Lesson 2: Plate Tectonics and Earth’s Surface |
| Lesson 3: Earthquakes and Tsunami Hazards |
| Lesson 4: Volcanoes and Earth’s Surface |
| Earth’s Surface Systems |
| Lesson 1: Weathering and Soil |
| Lesson 2: Erosion and Deposition |
| Lesson 3: Water Erosion |
| Lesson 4: Glacial and Wave Erosion |
| Distribution of Natural Resources |
| Lesson 1: Nonrenewable Energy Resources |
| Lesson 2: Renewable Energy Resources |
| Lesson 3: Mineral Resources |
| Lesson 4: Water Resources |
| Human Impacts on the Environment |
| Lesson 1: Population Growth and Resource Consumption |
| Lesson 2: Air Pollution |
| Lesson 3: Impacts on Land |
| Lesson 4: Water Pollution |
| History of Earth |
| Lesson 1: Determining Ages of Rocks |
| Lesson 2: Geologic Time Scale |
| Lesson 3: Major Events in Earth’s History |
| Energy in the Atmosphere and Ocean |
| Lesson 1: Energy in Earth’s Atmosphere |
| Lesson 2: Patterns of Circulation in the Atmosphere |
| Lesson 3: Patterns of Circulation in the Ocean |
| Climate |
| Lesson 1: Climate Factors |
| Lesson 2: Climate Change |
| Lesson 3: Effects of a Changing Climate |
| Earth-Sun-Moon System |
| Lesson 1: Movement in Space |
| Lesson 2: Earth’s Movement in Space |
| Lesson 3: Phases and Eclipses |
| Solar System and the Universe |
| Lesson 1: Solar System Objects |
| Lesson 2: Learning About the Universe |
| Lesson 3: Stars |
| Lesson 4: Galaxies |