Freeze Thaw action - A process of physical weathering, Scree - Sharp jagged rock fragments formed from freeze thaw action, Carbonation - A process of chemical weathering, Carbonic acid - Acid formed when water absorbs CO2, Karst - A landscape of bare surface limestone, The Burren - A karst region in Ireland, Stalactite - Calcite that hangs down from roof or ceiling of a cave, Stalagmite - Calcite that grows up from floor or ground of a cave, Pillar - Forms when a stalactite and stalagmite join, Clint - A flat topped block on a limestone pavement, Grikes - Grooves or gaps between clints, Limestone pavement - A big area of bare limestone made up of clints and grikes, Calcium carbonate - A mineral in limestone, Calcium bicarbonate - A soluble mineral from chemically weathered limestone, Permeable - When water can pass through limestone, Karren - A scoop or hollow on the surface of a clint, Swallow hole - Where a river goes underground into a cave system, 9% - How much water expands by when it freezes, Mechanical weathering also known as - Physical weathering, Denudation - The breaking down and carrying away of material over time caused by the processes of weathering & erosion.,

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