About Soil
Soil forms where rock weathering mixes with organic material, water, air, and living organisms. It is essential for most terrestrial ecosystems and agriculture.
Soil Horizons
Explore the key ideas behind soil horizons.
Learn MoreMineral Particles
Explore the key ideas behind mineral particles.
Learn MoreOrganic Matter
Explore the key ideas behind organic matter.
Learn MoreSoil Organisms
Explore the key ideas behind soil organisms.
Learn MoreWater and Air
Explore the key ideas behind water and air.
Learn MoreSoil Formation
Explore the key ideas behind soil formation.
Learn MoreSoil Erosion
Explore the key ideas behind soil erosion.
Learn MoreConservation
Explore the key ideas behind conservation.
Learn MoreSoil Horizons
Soil Horizons is one part of the larger Earth system. Earth scientists compare rocks, landforms, maps, measurements, fossils, satellite observations, and field evidence to understand how this topic formed and how it changes over time. Studying soil horizons also shows how slow geologic processes can build dramatic landscapes over thousands to millions of years. Weather, water, ice, gravity, heat from inside Earth, and plate movement often work together rather than acting separately.
Mineral Particles
Mineral Particles is one part of the larger Earth system. Earth scientists compare rocks, landforms, maps, measurements, fossils, satellite observations, and field evidence to understand how this topic formed and how it changes over time. Studying mineral particles also shows how slow geologic processes can build dramatic landscapes over thousands to millions of years. Weather, water, ice, gravity, heat from inside Earth, and plate movement often work together rather than acting separately.
Organic Matter
Organic Matter is one part of the larger Earth system. Earth scientists compare rocks, landforms, maps, measurements, fossils, satellite observations, and field evidence to understand how this topic formed and how it changes over time. Studying organic matter also shows how slow geologic processes can build dramatic landscapes over thousands to millions of years. Weather, water, ice, gravity, heat from inside Earth, and plate movement often work together rather than acting separately.
Soil Organisms
Soil Organisms is one part of the larger Earth system. Earth scientists compare rocks, landforms, maps, measurements, fossils, satellite observations, and field evidence to understand how this topic formed and how it changes over time. Studying soil organisms also shows how slow geologic processes can build dramatic landscapes over thousands to millions of years. Weather, water, ice, gravity, heat from inside Earth, and plate movement often work together rather than acting separately.
Water and Air
Water and Air is one part of the larger Earth system. Earth scientists compare rocks, landforms, maps, measurements, fossils, satellite observations, and field evidence to understand how this topic formed and how it changes over time. Studying water and air also shows how slow geologic processes can build dramatic landscapes over thousands to millions of years. Weather, water, ice, gravity, heat from inside Earth, and plate movement often work together rather than acting separately.
Soil Formation
Soil Formation is one part of the larger Earth system. Earth scientists compare rocks, landforms, maps, measurements, fossils, satellite observations, and field evidence to understand how this topic formed and how it changes over time. Studying soil formation also shows how slow geologic processes can build dramatic landscapes over thousands to millions of years. Weather, water, ice, gravity, heat from inside Earth, and plate movement often work together rather than acting separately.
Soil Erosion
Soil Erosion is one part of the larger Earth system. Earth scientists compare rocks, landforms, maps, measurements, fossils, satellite observations, and field evidence to understand how this topic formed and how it changes over time. Studying soil erosion also shows how slow geologic processes can build dramatic landscapes over thousands to millions of years. Weather, water, ice, gravity, heat from inside Earth, and plate movement often work together rather than acting separately.
Conservation
Conservation is one part of the larger Earth system. Earth scientists compare rocks, landforms, maps, measurements, fossils, satellite observations, and field evidence to understand how this topic formed and how it changes over time. Studying conservation also shows how slow geologic processes can build dramatic landscapes over thousands to millions of years. Weather, water, ice, gravity, heat from inside Earth, and plate movement often work together rather than acting separately.