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mass movement

Mass movement

TermDefinition
Soil creep Down slope movement of soil under the influence of gravity.
Landslides A very rapid movement of earth and rock (regolith) down a steep slope
Regolith Loose material including soil and rock.
Mudflows Moving rivers of rock, soil and water. They are the fastest forms of movement.
Bogbursts A form of mudflow. Occurs when peat gets saturated with water.
Stalactite Deposits of calcite from evaporation on the roof of caves
pillar stalactites and stalagmites joined
Stalagmite Deposits of calcite from evaporation on the floor.
Permeable A rock that water can pass through
Clint A block of limestone occurring naturally as a result of weathering
Grike Cracks between the blocks of limestone (clints)
Joints The vertical cracks in limestone
Bedding planes The horizontal cracks in limestone.
Freeze-thaw The break up of rock as a result of frost action
Carbonation When carbon dioxide mixes with rain water forming a weak carbonic acid. It reacts with limestone and dissolves it.
Swallow hole When rivers flow above limestone and dissolve the bedding planes and joints forming a hole.
Denudation Occurs by weathering and eroison
Erosion Breakdown of rocks and removal as a result
Weathering Breakdown and decay of rocks that are exposed to weather.
Lahar A mudflow that contains volcanic ash and rock.
Gradient Water content Human activity Vegetation What are the four factors that affect mass movement
Igneous rock formed as a result of volcanic activity. Hot molten magma cooled down.
Sedimentary rocks Formed from the remains (sediments) other rocks, plant and animal life compressed and cemented together.
Metamorphic rocks Previously sedimentary and igneous but changed by great heat or pressure
What rock is found in the Giant's causeway Basalt
What rock is found in the burren Limestone
What colour is basalt dark grey to black
What colours can marble be white, red, green or black
Earth is made up of three layers, what are these called. Core, the crust and the mantle.
What is the instrument used to measure and earthquake A seismograph
What is the scale used to measure an earthquake Richter scale
Tsunami When an earthquake under the sea a giant wave forms called a tsunami
Created by: aoifemcg77
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