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Secondary Science

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Clip description		Keywords
	Does mass change during a change of state? Duration: 01:27 Animations are used to show why mass does not change during a physical change.	mass, molecule, melting, boiling, physical change

	24-hour sunlight in Arctic summer Duration: 01:57 Discusses 24-hour daylight in the Arctic summer.	sun, horizon, daylight, seasons, winter, summer, Arctic, fox, tundra, nest, nesting

	A balanced diet Duration: 02:01 An explanation of a balanced diet and the appropriate amounts of the food groups that make it up.	balanced, diet, carbohydrate, protein, fat, vitamin, mineral, water, fibre, health, food packaging

	A base on the Moon? Duration: 03:12 Scientists from NASA describe how they might return to the Moon to build a permanent base.	moon base, rocket, astronaut, NASA, outerspace

	A chance of life on Titan Duration: 03:17 Experiments show a plausible mechanism for the production of amino acids on Titan.	Titan, Saturn, amino acid, evolution, atmosphere, outerspace

	A comparison of alpha, beta and gamma Duration: 02:02 The speed, penetration and ionising ability of different types of radiation are compared.	alpha, beta, gamma, radioactivity, ionisation, radiation

	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

	A family of otters at home Duration: 01:54 Night footage of otters returning to their home and their behaviour once inside.	holt, otter, whelp, pup, river, behaviour, nocturnal

	A journey to the edge of space (pt 2/3) Duration: 02:40 Examining the problems caused by changes in atmospheric pressure and temperature when planning a helium balloon ride to the edge of space.	gravity, forces, balloon, atmosphere, pressure, space, temperature, troposhere, stratosphere, BangGoesTheTheory

	A kingfisher dives to catch fish Duration: 01:59 Slow motion footage of a kingfisher diving to catch small fish.	kingfisher, predator, prey, fish, stream, hover, dive, adaptation

	A male panda competes to mate with a female Duration: 04:30 A male panda competes for a female before mating - a rarely seen event.	panda, mating, competition, sex

	A polar bear hunts a walrus Duration: 02:01 A polar bear unsuccessfully hunts a walrus on an Arctic island.	predator, prey, predation, hunt, polar bear, walrus, Arctic, adaptation

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Secondary Science

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