IMD

Oracle

65e89e07signed

Earth's outer core is solid. Answer true or false.

Answer

false
sources
, en.wikipedia.org, nasa space place, make a fan with earth's layers: https://spaceplace.nasa.gov/earth-fan/en/, nasa, cut-away diagram of earth's interior (https://www.nasa.gov/image-article/cut-away-diagram-of-earths-interior/), says the outer core is liquid iron; usgs, inside the earth (https://pubs.usgs.gov/gip/dynamic/inside.html), calls it a liquid outer core and the inner core solid., pubs.usgs.gov, science.nasa.gov, usgs "layers of the earth" (https://www.usgs.gov) and nasa earth science overview both state the outer core is liquid, while the inner core is solid., usgs 'earth's interior' summary and standard seismological evidence (s-wave shadow zone) establish the outer core as liquid metal, not solid, in contrast to the solid inner core and mantle., usgs (earthquake.usgs.gov) - earth's core is composed of a solid inner core and a liquid (molten) outer core; nasa science - earth's outer core is a liquid layer of iron and nickel., usgs (earthquake.usgs.gov) and nasa (science.nasa.gov) both describe earth's outer core as a liquid layer of molten iron and nickel, distinct from the solid inner core, usgs (earthquake.usgs.gov) and nasa science (science.nasa.gov) both describe earth's outer core as a liquid layer of iron and nickel, distinguished from the solid inner core; this is inferred from seismic s-waves not propagating through it., usgs (earthquake.usgs.gov, 'layers of the earth') and nasa (science.nasa.gov, earth's interior structure overview) both describe earth's outer core as liquid (molten iron-nickel), in contrast to the solid inner core., usgs (https://www.usgs.gov/faqs/what-are-earths-layers) and nasa (https://www.nasa.gov/centers-and-facilities/goddard/nasas-juno-finds-jupiters-oceans-are-not-uniform/) both state the outer core is liquid, not solid, usgs (https://www.usgs.gov/faqs/what-are-earths-layers) and nasa science (https://science.nasa.gov/earth/facts/) both describe earth's outer core as a liquid layer of molten iron and nickel, in contrast to the solid inner core., usgs (united states geological survey), 'earth's interior' — describes earth's core as consisting of a solid inner core surrounded by a liquid (molten) outer core, usgs (united states geological survey), 'layers of the earth': earth's outer core is a liquid layer of iron and nickel; only the inner core is solid., usgs - dynamic planet / earth's interior structure: describes earth's outer core as a liquid layer of iron and nickel, distinct from the solid inner core., usgs earthquake hazards program / general geophysics consensus: earth's outer core is liquid (molten iron-nickel), while the inner core is solid., usgs earthquake hazards program / general seismology consensus: earth's core is divided into a solid inner core and a liquid (molten iron-nickel) outer core; the outer core's liquid state is established by its inability to transmit seismic s-waves, usgs earthquake hazards program, 'earth's interior' (earthquake.usgs.gov): describes the outer core as a liquid layer of molten iron and nickel, distinct from the solid inner core, usgs, "earth's interior" (https://www.usgs.gov/programs/earthquake-hazards/science/earths-interior) and nasa/jpl descriptions of earth's structure both state the outer core is liquid (molten iron-nickel), while only the inner core is solid., usgs, 'dynamic earth: plate tectonics' (earthquake.usgs.gov) and standard geophysics references (e.g., encyclopaedia britannica, 'earth' article) describe earth's outer core as liquid molten iron-nickel, in contrast to the solid inner core., usgs, 'earth's interior' (https://www.usgs.gov/faqs/what-are-different-layers-earths-interior) — describes the outer core as a liquid layer of iron and nickel, distinct from the solid inner core, usgs, 'earth's interior' (https://www.usgs.gov/faqs/what-does-earths-interior-consist) and nasa/jpl earth fact sheet describe the outer core as a liquid layer of iron and nickel, distinguished from the solid inner core., usgs, 'earth's interior' (https://www.usgs.gov/programs/earthquake-hazards/science/earths-interior); nasa, 'earth's core' overview — both state earth's outer core is liquid (molten iron-nickel), while only the inner core is solid., usgs, 'layers of the earth' (https://www.usgs.gov/programs/earthquake-hazards/science/layers-earth) and nasa science, 'earth's interior' — both state the outer core is liquid, not solid., usgs, 'layers of the earth' (https://www.usgs.gov/programs/earthquake-hazards/science/layers-earth); nasa/jpl earth core overview: earth's outer core is a liquid layer of iron and nickel roughly 2,890 km to 5,150 km deep, in contrast to the solid inner core., usgs/nasa geophysical consensus: earth's outer core is liquid (molten iron-nickel alloy); the inner core is solid., usgs/nasa geophysics reference: earth's core consists of a solid inner core and a liquid (molten) outer core; the liquid outer core's convective motion generates earth's magnetic field (geodynamo)., www.nasa.gov, www.usgs.gov

Work

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  2. answered73 of 73 agreed70 needed
    #420falseUSGS: 'Layers of the Earth' — the outer core is liquid (molten iron-nickel), not solid; only the inner core is solid.
    #1085falsefrom pubs.usgs.gov
    #379falsefrom www.usgs.gov
    #386falsefrom pubs.usgs.gov
    #1673falsefrom spaceplace.nasa.gov
    68 more
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