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Questions and Answers
What generates Earth's magnetic field?
What generates Earth's magnetic field?
- Convection currents of molten iron and nickel in the outer core (correct)
- Solar wind interacting with Earth's atmosphere
- Tectonic plate movements
- Geostrophic currents in the oceans
What is the magnitude of Earth's magnetic field at its surface?
What is the magnitude of Earth's magnetic field at its surface?
- Constant at 50 μT
- Ranges from 100 to 200 μT
- Ranges from 25 to 65 μT (correct)
- Varies from 10 to 40 μT
How is Earth's magnetic field represented as an approximation?
How is Earth's magnetic field represented as an approximation?
- As a field of a magnetic dipole currently tilted at an angle of about 11° with respect to Earth's rotational axis (correct)
- As a field of a magnetic monopole
- As a field of a magnetic quadrupole
- As a field of a magnetic octupole
Which pole does the North geomagnetic pole represent?
Which pole does the North geomagnetic pole represent?
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What causes the convection currents in Earth's outer core that generate the magnetic field?
What causes the convection currents in Earth's outer core that generate the magnetic field?
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