KidzTube
Welcome
Login / Register

Marie Tharp: Uncovering the Secrets of the Ocean Floor - with Helen Czerski

Thanks! Share it with your friends!

URL

You disliked this video. Thanks for the feedback!

Sorry, only registred users can create playlists.
URL


 Geography   |   Society / Culture   |   Geology   |   Science   |   Social Science
 Find Related Videos  added
281 Views

Description

Continental drift is common knowledge now, but when the idea was first proposed it was revolutionary. Helen Czerski tells the story of how the maps of one of history’s finest cartographers shifted our view of the planet.
Subscribe for new science videos each week: http://bit.ly/RiSubscRibe

In the early 20th century, Alfred Wegener proposed a revolutionary idea: that the Earth’s continents were once joined together, and had gradually moved apart. The idea contradicted almost everything scientists thought at the time, and it took the detailed work of a brilliant cartographer to prove him right.

Conventional ideas held that the ocean floors were flat, featureless planes. As expeditions started to go around the world collecting ocean depth measurements, Marie Tharp – not allowed to join the expeditions herself – processed the data and began to craft detailed, revealing maps of the hidden ocean depths.

She discovered that the ocean floor was in fact a complex assortment of peaks and troughs. In particular, her profiles revealed stark rift valleys, which supported Wegener’s controversial ideas. Even then, it took a long time to convince the scientific community that her findings were correct. Eventually, however, she was proved right, and Marie Tharp took her rightful place as one of history’s finest cartographers.

Subscribe for regular science videos: http://bit.ly/RiSubscRibe

The Ri is on Twitter: http://twitter.com/ri_science
and Facebook: http://www.facebook.com/royalinstitution
and Tumblr: http://ri-science.tumblr.com/
Our editorial policy: http://richannel.org/home/editorial-policy
Subscribe for the latest science videos: http://bit.ly/RiNewsletter

Post your comment

Comments

Be the first to comment









RSS