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♻️  Unit 8: Aquatic and Terrestrial Pollution

4.0 Unit 4 Overview: Earth Systems and Resources






⏱️  1 min read

written by

Cody Williams

cody williams

Big Ideas


Image Courtesy of Pixabay

The theme of this unit Earth’s Systems and Resources. This is important to the course because, in later units, we will learn how humans impact these systems and use these resources. By understanding these systems, you can begin to see how they work together. The main systems and resources we look at in this unit are tectonic plates, soil, atmospheric convection cells, climate and geography, and El Ninos and La Ninas.

Key Terms

These words will help you better understand the unit and give you an idea of what you need to know. All of them are mentioned in this study guide.

4.1 Tectonic Plates

  • Convergent Boundary

  • Divergent Boundary

  • Seafloor Spreading

  • Transform Boundary

4.2 Soil Formation & Erosion

  • Parent Material

  • Weathering

  • Deposition

  • Soil Horizons

  • Hummus

  • Surface Litter

  • Topsoil

  • Eluviated Horizon

  • Zone of Leaching

  • Zone of Accumulation

  • Parent Material

4.3 Soil Composition & Properties

  • Clay Particles

  • Silt Particles

  • Sand Particles

  • Gravel Particles

  • Porosity

  • Permeability

  • Fertility

  • pH

  • Cation Exchange*

  • Aeration

  • Soil Compaction

  • Soil Texture Triangle

4.4 Earth's Atmosphere

  • Greenhouse Gases

  • Ozone

  • Troposphere

  • Stratosphere

  • Mesosphere

  • Thermosphere (Ionosphere)

4.5 Global Wind Patterns

  • Convection Cells

  • Hadley Cells

  • Ferrel Cells

  • Polar Cells

  • Coriolis Effect

  • Trade Winds

4.6 Watersheds

  • Watershed

  • Headwaters

4.7 Solar Radiation and Earth's Seasons

  • Solar Radiation

  • Seasons

4.8 Earth's Geography and Climate

  • Rain Shadow Effect

  • Windward and Leeward Side

4.9 El Niño and La Niña

  • El Niño

  • La Niña

  • Thermocline

  • Upwelling

🎥 Watch: Environmental Science Streams

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