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	Science Forum Forum Index » Earth Sciences » Q: Can a volcanic eruption blast rocks into outer space?  Q: Can a volcanic eruption blast rocks into outer space? « View previous topic :: View next topic »  Author Message Hydromancerx Posted: Wed Apr 23, 2008 4:31 pm    Post subject: Q: Can a volcanic eruption blast rocks into outer space? Forum Freshman Joined: 23 Apr 2008 Posts: 1 Can a volcanic eruption blast rocks into outer space? Note this would be from Earth not another planet. Also how big would the eruption have to be? Back to top JaneBennet Posted: Wed Apr 23, 2008 5:11 pm    Post subject: Forum Masters Degree Joined: 06 Apr 2008 Posts: 594 It would have to hurl rocks with an initial velocity of over 40 000 kilometres per hour (the escape velocity of Earth) upwards into space. Do you think the Earth has sufficient potential energy locked up within its core to cause an eruption violent enough to send rocks hurtling away at such a speed? _________________ “A problem worthy of attack Proves its worth by fighting back.” – Piet Hein Did You Know? Fact of the day: Ferdinand von Lindemann Back to top Zitterbewegung Posted: Thu Apr 24, 2008 2:22 am    Post subject: Forum Sophomore Joined: 24 Dec 2007 Posts: 154 Not from earth as the escape velocity is 11km/s so I'd say pretty much "No". For other objects in our solar system the answer is a definite "yes" for e.g. Io. _________________ I love deadlines. I like the whooshing sound they make as they fly by Back to top BumFluff Posted: Thu Apr 24, 2008 10:09 am    Post subject: Forum Senior Joined: 06 Mar 2008 Posts: 336 Location: Canada The rock would also have to escape at a particular angle so it didn't bounce off the atmosphere. As a rock has no thrust and it's path would be curved due to gravity if it did reach escape velocity chances are it still couldn't escape. _________________ "The trouble with the world is that the stupid are cocksure and the intelligent are full of doubt" - Bertrand Russell Back to top Ophiolite Posted: Fri Apr 25, 2008 3:13 am    Post subject: Forum Radioactive Isotope Joined: 25 Jul 2005 Posts: 4414 Location: Scotland BumFluff wrote: The rock would also have to escape at a particular angle so it didn't bounce off the atmosphere. This is an issue for incoming rocks, not outgoing rocks. _________________ The Universe is not only weirder than we imagine it is weirder than we can imagine. J.B.S.Haldane. Back to top BumFluff Posted: Fri Apr 25, 2008 4:28 pm    Post subject: Forum Senior Joined: 06 Mar 2008 Posts: 336 Location: Canada Ophiolite wrote: BumFluff wrote: The rock would also have to escape at a particular angle so it didn't bounce off the atmosphere. This is an issue for incoming rocks, not outgoing rocks. Ahhh Haven't rea;ly looked into it too much myself but when was younger that was what I was led to believe. _________________ "The trouble with the world is that the stupid are cocksure and the intelligent are full of doubt" - Bertrand Russell Back to top Lynx_Fox Posted: Sat Apr 26, 2008 5:21 am    Post subject: Forum Freshman Joined: 16 Apr 2007 Posts: 56 Large volcanic eruptions in have been able to eject materials pretty far into the stratosphere but that's far short of escape velocity and mostly smaller particles. Not sure if any detailed modeling has been done of mega-volcanoes like at Toba some 70 thousand year ago for whether the explosion propelled rocks into orbit. I doubt anything could leave orbit; the combination of atmospheric friction and large gravity keep pretty much everything but the most highly energized hydrogen atoms at the top of the atmosphere within earth's gravity. Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First     Page 1 of 1 Science Forum Forum Index » Earth Sciences » Q: Can a volcanic eruption blast rocks into outer space? Jump to: Select a forum Natural Sciences----------------Astronomy & CosmologyBiologyChemistryEarth SciencesMathematicsPhysics People----------------Behavioral & Social SciencesHealth & MedicinePhilosophical DiscussionHistoryReligionPoliticsCriminology and Forensic Science General Technology----------------Computer ScienceElectronicsMilitary Technology Information Technology----------------Business & EconomicsEducationEngineering & Transportation International Issues----------------Environmental IssuesIn the News The Science Forum----------------General DiscussionIntroductionsScience-Fiction and Non-FictionExperimentationPseudoscienceLinksArt and Culture Site Administration----------------Site FeedbackTrash Can  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum
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