Which is evidence that supports the dynamo theory? Show A) Earth's outer core contains liquid that conducts electricity B) Earth's core contains a large amount of iron C) Granite and basalt conduct electricity D) Convection occurs in Earth's inner core What does the dynamo theory describe?In geophysics, dynamo theory proposes a mechanism by which a celestial body such as the Earth or a star generates a magnetic field. The theory describes the process through which a rotating, convecting, and electrically conducting fluid can maintain a magnetic field over astronomical time scales.
Who proposed the dynamo theory and how does it describe the way Earth's magnetic field is generated?The dynamo theory was proposed by the German-born American physicist Walter M. Elsasser and the British geophysicist Edward Bullard during the mid-1900s. Although various other mechanisms for generating the geomagnetic field have been proposed, only the dynamo concept is seriously considered today.
What is the dynamo effect in relation to the Earth's magnetic field?The Dynamo effect:
It is a theory that explains the origin of the Earth's main magnetism in terms of a self-sustaining dynamo. In this dynamo mechanism, fluid motion in the Earth's outer core moves conducting material (liquid iron) across an already existing, weak magnetic field and generates an electric current.
What creates Earth's magnetic field apex?On Earth, flowing of liquid metal in the outer core of the planet generates electric currents. The rotation of Earth on its axis causes these electric currents to form a magnetic field which extends around the planet.
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Which is evidence that supports the dynamo theory apex
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