| Author | Message | ||
     Anonymous |
I am doing a project on sea floor spread/ plate tectonics and we need to make a model that will form mountains. I know this is irrelevant to most of the site but if I could just have a link or two that would be great. What do dome mountains have to do with sea floor spread? Anything? All I know is they are formed by magma pockets that dont quite erupt. Where does the magma pressure come from? ANYTHING WILL HELP! Thank you. | ||
| Simon Quellen Field (Sfield) |
When my dog tries to stop quickly on a throw-rug placed on our hardwood floor, the rug wrinkles. This might be the start of a good model of mountain building. I am not aware of a connection between sea-floor spreading and dome mountains. Perhaps other readers of this page can help you research this. I know of two processes that generate magma pressure. Both stem from buoyancy. The first one is subduction, where the lightweight crust of one plate slides under another plate, and melts. The magma thus formed is lighter than the surrounding rock, and bubbles up to form volcanoes such as those in the Cascade mountains. The other process is driven by hot spots, such as that under the Hawaiian islands. Again, the hot magma formed there rises to form volcanoes. You're right, none of this has much to do with science toys, but this forum is read by a lot of smart people who might be able to help you. And that makes your question a fine one for this page. | ||
| Anonymous |
Thanks. You see, our teacher won't give us any info. She won't tell us whats relevant and whats not. I don't know if dome mountains are relevant to sea floor spread, but i know they are relevant to plate tectonics (from subduction forcing the magma pocket to nearly erupt). I guess I'll have to do folded mountains instead. Thanks again. | ||
| Simon Quellen Field (Sfield) |
Teachers that don't teach? Perhaps the goal is to get you to do some research... I typed "sea floor spreading dome mountains" into Google and got lots of relevant information. It pays to check published and peer reviewed works, as a lot of stuff on the Web is just wrong. But sources such as the USGS on the Web can generally be trusted. | ||
| Anonymous |
Hey, I need help, I've been looking everywhere and can't find anything! I need to make a model of a dome mountain for school that shows all of the layers on the inside. I've looked on a ton of different google links and can't find anything that can help me. All they tell me is the definition of what a dome mountain is. But I need to know the layers of the inside with the temperatures and the depths. I can't find where to look. Please help! | ||
| Simon Quellen Field (sfield) New member Username: sfield Post Number: 169 Registered: 12-2004 |
Have you tried a library yet? Not all of the world's information is on the Internet. That said, the United States Geological Survey has an email address for questions like this. Talk to them at "mailto:ask@usgs.gov". | ||
| Phil (Unregistered Guest) Unregistered guest Posted From: 122.163.48.54 |
Simon, Do we have some equation to estimate how much weight can be holded against gravity with magnet of say A tesla. The dimension of the weight can be varied for max weight. | ||
| Simon Quellen Field (Sfield) Senior Member Username: Sfield Post Number: 1810 Registered: 12-2004 |
See Equation 11 on this page: "http://www.magnetsales.com/Design/DesignG_frames/frame_dgbod2.htm" | ||
| John Kondo (Smartypants) Junior Member Username: Smartypants Post Number: 5 Registered: 4-2008 |
for the plate tectonics prodgect, imagine a blister(eww...) to be the dome mountain. the pressure come from the core of the earth, the reason for all the pressure is the work of heat and that ALL things that are hot rise to the top (I think...). as for the progect itself use foam (the kind in A B C stickers or in scrap books) and get a laer of about 3 inches (if color matters then use red on the inside, orange on the second, and so on and so forth), glue them together and press from the outside-in and the model should pop up resulting in a model volcano. tips... the ocean plate ALWAYS goes under the land plate when they slide together. thats why there are only CLIFFS (if you see mountains then the're only cliffs that are worn down) near the sea. sea floor spreading is something that goes unnoticed(unless your looking for one) when the seafloor spreads the magma patches it up (imagine a scab and a BIG wound(another eww). enough info? gr8 |
