Question

[9 marks total] 3. Sea level do Po Ocean Continental plate dcp Ocean Plate dop Pop Pcp Mantle 1 Mantle 2 Outer Core Both the continents and the ocean have plates, made of Earth's crustal material, that float on the Earth's mantle. Oceanic plates float on the mantle as well, as seen in the figure, which shows a depth profile below sea level for each type of plate. Determine the depth of the continental plate (dep) using the data given, assuming the area under consideration is the same in both cases and the mass of each cross-section is also the same, are covered by the ocean to its full depth and float on the Earth's mantle. The continental plates 3 2700 kg/m do 4 km Pep 3300 kg/m Pop 2900 kg/m 1000 kg/m dop 7.5 km Pm 3 Po &

Answer 1

Let le the undu Consdeatio he Eath area Let dep Continentl plate Jepthof he deptrof mandle 1 x- the mantie 2 Let Ldip(d,t dop dupth f dip- 1.S in plake 1 Let. 00 t2 900x.S + l000x4 (dp) 2200 x-dp -1-5) 2F0 Goo dp 12,20 21 20.22 km dup