608468
Description
Flashcards by steph_narciso, updated more than 1 year ago
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Created by steph_narciso
over 10 years ago
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| Question | Answer |
| what does the inner core consist of? | it is solid and consist of iron & nickel |
| what is the density of the inner core? | Density of about 13.6g/cm3 and it is 5 times denser than the surface rocks. |
| what is the outer core? | it is liquid , comprising mostly iron |
| what is the density of the outer core? | it has a density of 10-12g/cm3 |
| 'the outer core is responsible for the..' | earths magnetic field |
| 'the mantle is... | solid, containing lower density material , peridotite formed of silicate minerals |
| how thick is the mantle? | 2900km |
| what is the crust made out of? | it is solid and divided into two main types OCEANIC and CONTINENTAL |
| the depth of the crust varies between.. | 6km-70km |
| the average density of the crust .. | 3g/cm3 |
| the mantle and crust are divided into what sections? | lithosphere asthenosphere mesophere |
| where is the lithosphere | the crust and upper section of the mantle |
| asthenosphere is .. | the upper part of the mantle that is molten |
| mesosphere is.. | the lower part of the mantle(solid) |
| what are the characteristics of continental crust | thickness-30-70km denisity-2.7g/cm3 rock type-granite mineral content- silica&aluminium (SIAL) |
| what are the characteristics of the oceanic plate? | thickness-5-9km density-3.0g/cm3 rock type-basalt m.content- silica&magnesium (SIMA) |
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