LEARNING ZONE BROADBAND

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Clip description		Keywords
	Chemical weathering by solution in upland limestone scenery Duration: 01:22 The deflation of the upland limestone landscape by slow solution weathering is demonstrated at Norber in the Yorkshire Dales.	erratics, limestone plinth, chemical weathering, permeable rock, Yorkshire Dales, geography, limestone

	Limestone weathering and erosion Duration: 01:21 Many years of limestone erosion or weathering have formed China's stone forest.	dissolve, China, limestone, weathering, gully, erosion

	How does weather change the shape and appearance of mountains? Duration: 03:00 A look at how weathering and erosion have changed the shape and appearance of Snowdon in Wales.	scree, weathering, erosion, landscape, deposits, glacier, valley, Snowdon, Snowdonia, ice age

	Rivers - weathering, erosion and corrasion Duration: 00:41 An illustrated explanation of rivers - weathering, erosion and corrasion.	erosion, corrasion, physical, river, weathering, geography

	A dramatic weathered sandstone landscape Duration: 01:23 Weathering of the landscape is illustrated by towers of sandstone eroded by the wind.	erosion, weathering, wind, cloud, rain, Arthur Conan Doyle, Lost World

	Weathering, erosion and coastal features Duration: 01:56 Aerial erosion has a role to play in the formation of coastal features such as the Bullers of Buchan in Aberdeenshire.	freeze thaw, cave, blow hole, weathering, slumping, geography, coastal landscape, Bullers of Buchan, Stonehaven, coast, Aberdeenshire

	The Rakaia river valley, New Zealand Duration: 04:36 The Rakaia river is fed by glaciers in the New Zealand Alps. The valley experiences frequent earthquakes, landslips and freeze-thaw weathering.	landscapes, South Island, glaciated mountains, snowmelt, precipitation, ice, moraine, lake, source, fan, erosion

	Surface features of upland limestone scenery Duration: 03:17 In the Malham Cove area of the Yorkshire Dales the landscape has been shaped by the erosion of limestone outcrops by chemical weathering and erosion. Annotated images of scars, scree and limestone pavements are shown.	karst, weathering, erosion, scar, scree, limestone pavement, chemical weathering, solution, clints, grykes, Yorkshire Dales, geography

	Weathering of rocks Duration: 01:42 Rocks on the surface of the Earth can be worn away by the weather into interesting shapes.	rock, shaping, weather, weathering, cave

	The River Conwy - erosion and deposition Duration: 02:07 The River Conwy in North Wales flows through Snowdonia. Freeze-thaw weathering creates scree slopes and erosion and deposition transform the landscape.	river, erosion, deposition, Snowdonia, Wales, water, River Conwy, valley, ice, glaciation, freeze-thaw, weathering, scree, energy

	Camels survive a sandstorm in the Sahara desert Duration: 01:39 Dromedary camels tolerate a sandstorm in the Sahara desert.	erosion, weathering, adaptation, evolution, desert, sand, Sahara, camel, dromedary

	Rocks and soil (no narration) Duration: 00:38 A compilation of images showing rocks in a variety of forms and locations.	molten rock, rock, volcano, canyon, weathering, precious stone, gorge, landmark, marble

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