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Weathering and Erosion (Weathering- The chemical and physical processes…
Weathering and Erosion
Weathering- The chemical and physical processes that break down rock at Earth's surface. 
Chemical Weathering- Process that breaks down rock through chemical changes.
Physical Weathering- Process of breaking down rocks and minerals into smaller pieces by physical force.
Frost wedging- Weathering that occurs when water seeps into cracks in rocks, freezes, and expands.
Pollution- Introduction of harmful materials into the environment.
Groundwater- Water that fills the cracks and spaces in underground soil and rock.
Water table- Upper surface of the zone of saturation.
Acid precipitation- Precipitation that is more acidic than usual; and speeds up chemical weathering.
Surface Water- Any water that collects on the surface of the Earth.
Aquifers- Underground layer of water bearing permeable rock, rock fractures or unconsolidated materials.
Watersheds- Area of land that feeds all water running under it and draining off of it into a body of water.
Flooding- Natural process that benefits the environment.
Tsunamis- Large wave on the ocean created by an underseas earthquake.
pH scale- Describes the acidity or alkalinity of a solution.
Geo hazards- Natural, and geologic processes.
Zone of Saturation- An area where the spaces between pieces of rock and soil are completely filled or saturated with water.
Zone of Aeration- Between Earth's surface and water table, and occurs when air and water mix or come into close contact.
Infiltration- When precipitation or water soaks into soil and move in rocks through cracks and pore spaces.
River Basins- Portion of land drained by a river.
Porosity- A measure of how much of a rock is open space.
Barrier Islands- A coastal landform and a type of dune system that is flat and has lumpy areas of sand that form by a wave and tidal action parallel to mainland coast.
Erosion- Process where water, ice, wind or gravity moves weathered rock and soil.
Soil- The loose weathered materials on Earth's surface.
Sink holes- Circular depressions caused when the roof of a cavern collapses.
Landslides- Sudden movement of a mass of bedrock or loose rock down a hill, mountain or cliff.
Sand- Composed of finely divided rock and mineral particles.
Silt- A solid, dust-like sediment that water, ice, and wind transport and deposit.
Clay- Composed of mixtures of finer grained clay minerals and clay-sized crystals of other minerals.