1.咩叫做Density stratification,佢係點樣change protoearth?
4.咩叫做origin of the earth's oceans,佢係點樣related 個 origin of the earth's
5. 有咩特別/分別在於chemical composition of the earth's interior and physical?
- 7 年前最愛解答
Sorry, I don't know most of them too :( teach me if u understand later xd
2. Crust, mantle, and core is structure of earth. lithosphere means the uppermost part of mantle + crust. Asthenosphere means the upper mantle + lower mantle. (rmb that mantle is divided into 3 parts i.e. uppermost, upper and lower :D) Asthenosphere is A LOT THICKER than lithosphere. It is in plastic state while lithosphere is in solid state. D convection current 就係在 asthenosphere ga la~資料來源： me