Mapping the Sea *suitable for home teaching*
This film, from Twig World, looks at how the oceans can be mapped. Charting the waters around the Scottish island of Orkney was a pivotal moment in maritime mapping. But a reliance on outdated maps places modern ships in danger. The key points made in the film are: •Before mapping of the sea floor began, hazards hidden beneath the waves were responsible for destroying hundreds of ships and killing many sailors. •In 1743, Murdoch Mackenzie mapped the ocean floor around the island of Orkney and invented new mapping symbols. •Today, sound waves can be used to accurately measure the depth of water. •Mapping the seabed is important for uncovering hazards, which ultimately saves lives.
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|Published||2010 to 2019|
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