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Thinking Allowed July 2016: Food bank Britain, Food poverty in EuropeMonday, 25th July 2016 00:15 - BBC Radio 4This episode looks at food poverty in Britain and Europe. Read more: Thinking Allowed July 2016: Food bank Britain, Food poverty in Europe
Full Steam Ahead: Episode oneAvailable until Monday, 22nd August 2016 17:30The first episode of Full Steam Ahead looks at the way Britain changed in the 19th century due to the railways Read more: Full Steam Ahead: Episode one
Thinking Allowed July 2016: Food bank Britain, Food poverty in EuropeAvailable for over a year
Exodus: Our Journey To Europe: EPISODE 3Available until Friday, 19th August 2016 01:15
Exodus: Our Journey To Europe: EPISODE 2Available until Friday, 19th August 2016 00:15
OpenLearn Live: 22nd July 2016A biochemist with a fearsome reputation; how drones are helping ferrets and keeping your workers... Read more: OpenLearn Live: 22nd July 2016
Full Steam AheadIt’s Full Steam Ahead for historians Ruth Goodman, Alex Langlands and Peter Ginn as they bring... Read more: Full Steam Ahead
Employment relations and employee engagementThis free course, Employment relations and employee engagement, looks at raising levels of... Try: Employment relations and employee engagement now
Succeed with maths – Part 1If you feel that maths is a mystery that you want to unravel then this free course is for you. It... Try: Succeed with maths – Part 1 now
Water is arguably the most important physical resource as it is the one that is essential to human survival. Understanding the global water cycle and how we use water is essential to planning a sustainable source of water for the future. In the UK there are areas where water supplies are limited, as shown by recent droughts. Globally, there are many reas that do not have enough water to support the current population adequately. Decisions will have to be made on the best way to use water in a world where there is climate change. Groundwater is a free course that helps you examines the options.
After studying this course, you should be able to:
- use information from wells, the topography of the ground and a water table contour map, to carry out the following: interpret cross-sections, calculate the thickness of the unsaturated zone, and the rate of groundwater flow; deduce the direction in which groundwater is flowing; and estimate the depth to the saline interface in a coastal area from the height of the water table
- list the types of rock that usually make good aquifers, and assess how good an aquifer a rock could be, given its porosity and hydraulic conductivity
- distinguish between unconfined and confined aquifers, and recognize conditions in confined aquifers that will produce a flowing artesian well
- use suitable data to calculate the exploitable storage, specific yield and specific retention of an aquifer.
Study this free course
Enrol to access the full course, get recognition for the skills you learn, track your progress and on completion gain a statement of participation to demonstrate your learning to others. Make your learning visible!
Many people have the impression that underground water occupies vast caverns, such as those in the Derbyshire Peak District, flowing from one cavern to another along underground rivers. This is a common misconception: underground caverns are fairly rare, but huge quantities of water exist underground, within rocks. This is because many rocks contain pores, spaces that come in all shapes and sizes. In sediments, and consequently sedimentary rocks, there are often pores between grains which can be filled with water. There may also be spaces between rock beds or along joints, fractures or fissures which can also contain water. However, before we look at pores in more detail we will examine how water gets into the rock.
This OpenLearn course provides a sample of level 2 study in
This free course includes adapted extracts from an Open University course which is no longer available to new students. If you found this interesting you could explore more free Environmental Science courses or view the range of currently available OU Environmental Science courses.
Copyright & revisions
Originally published: Tuesday, 22nd March 2016
Last updated on: Tuesday, 22nd March 2016
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