Problem: Which of the following statements concerning the Earth's internal structure or heat transfer within the Earth is FALSE? Group of answer choices Heat can move through the Earth's outer core by both conduction (because the core is metal) and convection (because the outer core is liquid). Reversals in the Earth's magnetic field do not drive plate tectonic motion, but indirectly led to the recognition of a mechanism for that motion. Convection can only occur in liquids and gases, so conduction is the most important method of heat transfer through the Earth's mantle. Although the asthenosphere is heat-softened and close to its melting temperature, the outer core is the only liquid layer within the Earth. The Earth can be subdivided into layers on the basis of both composition (what layers are made of) and physical state (how they behave).