515 search results
Climate change: island life in a volatile world
Society, Politics & Law

Climate change: island life in a volatile world

...that the land that became Tuvalu surfaced from the ocean, enabling the accumulation of sand and gravel, and coral growth that helped make the islands. Subsequently, from around AD 750 to 1250, the Pacific experienced a phase of gradual warming known to climate change scientists as the ‘Medieval warm period’ (Nunn, 2003, p. 223). As temperatures rose, so too did sea levels. Rising sea levels would have brought salt into ......
View course Climate change: island life in a volatile world
Level 2: Intermediate 15 hrs
Moons of our Solar System Badge icon
Science, Maths & Technology

Moons of our Solar System

...cast with the main author David Rothery and guests, where they were able to ask questions live. A recording of the event is available: http://live.kmi.open.ac.uk/webcast/0e77fZ224. To access it, you need to be signed in using an OU account. You will find links to recordings of previous ‘planets and moons chat’ throughout the course. Enrolling on the course will give...
View course Moons of our Solar System
Level 1: Introductory 24 hrs
Surface water
Nature & Environment

Surface water

...sand in suspension, particularly during floods, and when a river enters a reservoir it slows down and the sediment carried in suspension is deposited on the floor of the reservoir. Lake Mead, on the Colorado River, has had its storage capacity reduced by over a half since the dam was completed in 1935. This is less of a problem for UK reservoirs, as rivers here are...
View course Surface water
Level 2: Intermediate 8 hrs
The family at the centre of early learning
Education & Development

The family at the centre of early learning

...sand and he loves the kitchen, and he’s just worked up the courage to go through the tunnel and chute now, you know; for a long time he would go up and come back down. He’s plucked up the courage to go through there. So, I think he’s just, he’s a first trial sort of thing, it’s good for him to get out and mix with other children, so get a wee bit more...
View course The family at the centre of early learning
Level 1: Introductory 9 hrs
Babylonian mathematics
Science, Maths & Technology

Babylonian mathematics

...sand into the eventual light of public knowledge.) [Figure 4] Figure 4 Plimpton 322 Look at the photograph and notice the main features of what remains: four columns of numbers, with words at the head of each column. Now look at the transcription (we have labelled the columns A, B, C for ease of reference), and see if any pattern is evident to you A B C [1;59,0,]15 1,59...
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Level 2: Intermediate 8 hrs
Hadrian's Rome
History & The Arts

Hadrian's Rome

...cast a beam, like a floodlight, on the wall, and, like a floodlight, this beam moves around the interior, whereabouts it does that depends on the season and the time of day. The coffering now has been stripped of its bronze gilt, but a Roman visitor would have been dazzled by the reflected light and this would have allowed them to see the multi-coloured marbles on the...
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Level 3: Advanced 10 hrs
Developing leadership practice in voluntary organisations
Money & Business

Developing leadership practice in voluntary organisations

...casts her problems as partially concerned with racist and sexist sentiment. ‘I’m going to be entirely Persian about it [attempts to remove her as the Kids Company chief executive]. I’m going to smile and accept my place as a woman on the sides, not knowing how to run a business’, Batmanghelidjh says mischievously towards the beginning of the troubles. [Described...
View course Developing leadership practice in voluntary organisations
Level 1: Introductory 15 hrs
The restless Universe
Science, Maths & Technology

The restless Universe

...casts light on concepts like temperature, heat and spontaneous processes, which do not fit naturally into the Newtonian world-view. It is still instructive to return to the origins of the subject. Speaking very roughly, a steam engine is a device that uses fuel to convert water into steam and uses the resulting expansion in volume to drive a piston. The kinetic energy of...
View course The restless Universe
Level 2: Intermediate 12 hrs