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SEARCH RESULTS All clips in All Levels> All Subjects> All Topics containing “+Source”

Clip description		Keywords
	How do different materials affect shadows? Duration: 01:06 Children experiment with light sources and shadows.	opaque, light source, shadows, translucent

	The course of the River Severn - from source to sea Duration: 04:50 Following the course of the River Severn on the three stages of its journey from source to the sea - the upper, middle and lower courses.	Severn, source, river, stream, waterfall, mountain, valley, erosion, mouth, meander, bridge, course, upper, middle, lower

	How does light create shadows? Duration: 00:46 An explanation of where light comes from and how shadows are created.	light source, light, shadow

	Using a torch as a light source Duration: 00:59 A demonstration of how a source of light is required to see objects in the dark.	light source, torch, reflection, reflecting

	The River Clyde from source to sea Duration: 01:08 A brief look at the features of the River Clyde in Scotland, from source to sea.	Central Lowlands, Scotland, source, sea, upstream, Clyde, Falls of Clyde, boat, waterfall

	The Sun - a source of energy (pt 1/3) Duration: 01:27 How the sun is the main source of energy for life on earth.	sun, energy, source of energy, solar energy

	An unusual source of light Duration: 00:37 Fibre optic cables make a worker's safety vest glow in the dark, demonstrating an unusual source of light.	light, energy, total dark, darkness, light source, illuminate, fibre optic, uses of waves

	Reflectors and light sources Duration: 00:46 A discussion about the relative merits of reflectors and light sources.	energy, reflector, light source, reflect

	The Celts Duration: 00:50 A description of the feasts, clothes and distinctive hair of the Celts.	Celts, historical sources, feats, fashion, clothes, blond hair, source material, tribal society, Celtic

	The River Forth from source to sea Duration: 01:01 The origins and course of the River Forth in Scotland.	crossing point, castle, Stirling Castle, bridge, Central Lowlands, Scotland, source, tributaries, Forth

	Light reflects from a cat's eyes Duration: 00:28 The presenter shines a torch into the eyes of a cat to demonstrate reflection.	light, light source, reflect, cats eyes

	How shadows are made - shadow puppets Duration: 02:02 Shadow puppeteer Manju Gregory shows how to make and create a shadow puppet show.	light, light source, transparent, translucent, opaque, shadows

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