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Chrisbattye asked Paul Hudson: "Scientists believe that climate change will lead to the polar ice caps melting and cause sea levels to rise. As ice is less dense that water and 9 tenths of an ice berg is below the surface of the sea..." Show more »"Scientists believe that climate change will lead to the polar ice caps melting and cause sea levels to rise. As ice is less dense that water and 9 tenths of an ice berg is below the surface of the sea then surely the icebergs melting will cause the sea levels to drop? Water is unusual as it actually expands when it turns to a solid. Therefore, the water frozen in an iceberg will displace more of the sea than if it was water. I'm sure you have a good answer to this question. Thanks for reading, Chris Battye, Halifax." Show less »
Paul Hudson answers: "The main constituent of rising sea levels comes from the thermal expansion of the oceans as temperatures rise. Land based melting ice and snow will also contribute, but obviously melting ice burgs won’t..." Show more»"
The main constituent of rising sea levels comes from the thermal expansion of the oceans as temperatures rise. Land based melting ice and snow will also contribute, but obviously melting ice burgs won’t for the reasons stated by the questioner!
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0 comment | Topic: Science and Technology | Email to friends | Jul 10 2008 3:55:09 PM

djohnsonn asked Paul Hudson: "Did you predict the Sheffield floods?"
Paul Hudson answers: "We predicted the heavy rainfall which lead to the flooding – but its not our job to predict flooding, that’s the Environment agency."
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0 comment | Topic: Science and Technology | Email to friends | Jul 10 2008 3:52:02 PM

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