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

Clip description		Keywords
	Air resistance Duration: 01:59 A brief explanation of what air resistance is and how it can be reduced.	air resistance, drag, streamlined

	How does sound move through the air? Duration: 00:52 An investigation into how sound travels through the air to reach our ears.	sound, air, muffling, vacuum, vibrate, vibration, vibrating

	Condensing air into liquid form Duration: 01:34 Liquid nitrogen is used to cool air and condense it into liquid form.	particles, air, pressure, condensation, condense, liquid nitrogen

	The discovery of elements in the air Duration: 01:34 The discovery of the elements that make up the air.	Lavoisier, elements, atoms, oxygen, nitrogen, air

	How does sound travel through the air? Duration: 01:18 A demonstration of how sound travels through the air or any other medium.	sound, energy, sound travel, air, particles, vibration, waves

	Using air pressure to pump water Duration: 03:27 How atmospheric air pressure is used to help pump water from an open reservoir to a higher level.	particles, air pressure, water pressure

	Depressions and frontal rainfall in the UK Duration: 01:50 The UK experiences depressions as it lies on the boundary between cool air from the Arctic and warm air from the tropics. Fronts mark the boundary between the warm and cold air and rainfall is always found here.	frontal rainfall, depression, cool air, warm air, Arctic, tropics, front, condensation, moisture, rain

	Transport: the aeroplane Duration: 01:03 Early attempts of air travel.	aeroplane, air travel, early flight, transport

	Working with the threat of air raids Duration: 01:52 North Vietnamese workers shelter from American air raids.	air raid, Vietnam, shelter, coal

	Air pressure Duration: 01:26 A demonstration of the effects of air pressure.	particles, air pressure, effects, variables

	Hot air balloons powered by a toaster Duration: 01:55 Presenter Dr Yan Wong demonstrates how an ordinary toaster can be used to fly a hot air balloon.	convection, heat, expansion, molecules, BangGoesTheTheory, investigation

	How does sound travel through the air? Duration: 01:00 A demonstration of how particles vibrate and collide with one another to create sound.	air, air particles, compression waves, vibrate, vibration, vibrating, sound

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