Question

1. what generates earths magnetic field? convection currents in the mantle tectonic movements in the lithosphere movement within the outer core radiation from the inner core

Explanation:

To determine what generates Earth’s magnetic field, we analyze each option:

• Convection currents in the mantle drive plate tectonics, not magnetic field generation.
• Tectonic movements in the lithosphere relate to plate motion, not the magnetic field.
• The outer core is liquid iron and nickel; its movement (due to heat from the inner core) creates electric currents, which generate the magnetic field (geodynamo effect).
• Radiation from the inner core (heat) drives outer core movement but doesn’t directly generate the field.

Answer:

C. Movement within the outer core