Earth Structure 0.0 / 5 ? GeographyPlate tectonicsA2/A-levelAQA Created by: OctaviaLCreated on: 30-05-16 18:15 What elements are found in the core? Iron and nickel. 1 of 12 What temperature is Earth's core? Over 5,000 C. 2 of 12 Are the outer and inner core molten or solid? Inner core is solid, outer core is molten. 3 of 12 What does the mantle consist of? Molten and semi-molten lighter elements such as silicon and oxygen. 4 of 12 What are five elements commonly found in the crust? Silicon, oxygen, potassium, aluminium and sodium. 5 of 12 What is the lithosphere? The crust and the rigid upper section of the mantle. 6 of 12 How thick is the lithosphere? Approx. 80-90km. 7 of 12 What is the lithosphere split into? Seven large plates and several smaller plates. 8 of 12 How thick is continental and oceanic crust? Continental: 30-70km. Oceanic: 6-10km. 9 of 12 How old is continental and oceanic crust? Continental: >1,500m years. Oceanic: 10 of 12 What is the density of continental and oceanic crust? Continental: 2.6 (lighter). Oceanic: 3.0 (heavier). 11 of 12 What is the composition of continental and oceanic crust? Continental: mainly granite; silicon, oxygen, aluminium. Oceanic: mainly basalt; silicon, oxygen, magnesium. 12 of 12
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