History of the earths structure
- Created by: Hannie16
- Created on: 02-01-17 09:58
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- History of the Earth
- Why do we need to know about the Earth's internal structure?
- Because processes responsible for the formation of volcanoes & earthquakes originate in the interior of the earth
- E.g. convection currents & plate movement
- Because processes responsible for the formation of volcanoes & earthquakes originate in the interior of the earth
- How has the Earth evolved? & By what process?
- Earth evolved from a rocky mass to a living planet with continents, oceans, an atmosphere & an interior of distinct chemical and physical layers.
- Differentiation
- What was early Earth like?
- Homogenous mixture
- With no continents or oceans
- As planetismals (small pieces of matter) crashed into primitive Earth, energy of motion converted to heat
- Radioactive elements disintegrated spontaneously leading to the heating/melting of primitive Earth
- What did the melting of the Earth do?
- Brought light materials to the outer layers of earth
- Why do we need to know about the Earth's internal structure?
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