2.6 by sears nevins https://padlet.com/sears_nevins/oi1kygtgifpp en-us 2018-03-23 18:29:34 UTC 2018-03-27 01:46:23 UTC hello@padlet.com https://padletuploads.blob.core.windows.net/prod/179418301/01637328de00c7b55429ee214e92bcdb/icons8_cardboard_box.png Explain the structure of the core. sears_nevins https://padlet.com/sears_nevins/oi1kygtgifpp/wish/245620006 liquid outer core that is much less viscous than the mantle, and a solid inner core.

]]> 2018-03-23 18:29:34 UTC https://padlet.com/sears_nevins/oi1kygtgifpp/wish/245620006 How hot is the core? sears_nevins https://padlet.com/sears_nevins/oi1kygtgifpp/wish/245620008 About 10,800 F]]> 2018-03-23 18:29:34 UTC https://padlet.com/sears_nevins/oi1kygtgifpp/wish/245620008 What did Oldham discover? sears_nevins https://padlet.com/sears_nevins/oi1kygtgifpp/wish/245620010 first clear identification of separate arrivals of P waves, S waves, and surface waves on seismograms, first clear evidence that Earth has a central coreW]]> 2018-03-23 18:29:34 UTC https://padlet.com/sears_nevins/oi1kygtgifpp/wish/245620010 2.6 sears_nevins https://padlet.com/sears_nevins/oi1kygtgifpp/wish/245620011        Earths Core]]> 2018-03-23 18:29:34 UTC https://padlet.com/sears_nevins/oi1kygtgifpp/wish/245620011 Who was Inge Lehmann? sears_nevins https://padlet.com/sears_nevins/oi1kygtgifpp/wish/245620012 Danish seismologist and geophysicist]]> 2018-03-23 18:29:34 UTC https://padlet.com/sears_nevins/oi1kygtgifpp/wish/245620012 What did Lehmann discover? sears_nevins https://padlet.com/sears_nevins/oi1kygtgifpp/wish/245620013 discovered that the Earth has a solid inner core inside a molten outer core]]> 2018-03-23 18:29:34 UTC https://padlet.com/sears_nevins/oi1kygtgifpp/wish/245620013 Why does Earth have a magnetic field? sears_nevins https://padlet.com/sears_nevins/oi1kygtgifpp/wish/245620014 created by convection currents due to heat escaping from the core]]> 2018-03-23 18:29:34 UTC https://padlet.com/sears_nevins/oi1kygtgifpp/wish/245620014 Who was Richard Oldham? sears_nevins https://padlet.com/sears_nevins/oi1kygtgifpp/wish/245620015 British geologist]]> 2018-03-23 18:29:34 UTC https://padlet.com/sears_nevins/oi1kygtgifpp/wish/245620015 What evidence is there that the outer core is molten? sears_nevins https://padlet.com/sears_nevins/oi1kygtgifpp/wish/245620016  Density seismic-wave data and Earth’s magnetic field gives us info on why earth's core might by liquid]]> 2018-03-23 18:29:34 UTC https://padlet.com/sears_nevins/oi1kygtgifpp/wish/245620016 What evidence is there that Earth’s core is metal? sears_nevins https://padlet.com/sears_nevins/oi1kygtgifpp/wish/245923007 Instead of using cat scans or x rays scientists use waves to demonstrate what is in the inside of the earth, asteroids are composed of iron/metal, plus it is so hot in the core of the earth it has to be made up of some liquid metal]]> 2018-03-26 02:24:55 UTC https://padlet.com/sears_nevins/oi1kygtgifpp/wish/245923007 What does the outer core generate and how does it do that? sears_nevins https://padlet.com/sears_nevins/oi1kygtgifpp/wish/245923022 Differences in temperature, pressure and composition in the outer core cause convection currents in the molten metal as cool, dense matter sinks whilst warm, less dense matter rises. The Coriolis force, resulting from the Earth’s spin, also causes swirling whirlpools.]]> 2018-03-26 02:25:01 UTC https://padlet.com/sears_nevins/oi1kygtgifpp/wish/245923022