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Compass behavior and Earth’s magnetism

Magnetism and electromagnetism • Magnetic fields and forces

Key concepts

What you'll likely be quizzed about

  • Earth generates a magnetic field due to the movement of molten iron in its outer core.
  • This magnetic field extends beyond the planet’s surface, creating regions of magnetic influence.
  • The field lines emerge near the magnetic South Pole and re-enter at the magnetic North Pole, forming a dipole structure.

Flashcards

Test your knowledge with interactive flashcards

What is the structure of Earth's magnetic field?

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Earth's magnetic field has a dipole structure with field lines emerging at the magnetic South Pole and re-entering at the magnetic North Pole.

Key notes

Important points to keep in mind

A compass relies on Earth's magnetic field.

The magnetized needle of a compass aligns with magnetic North.

Compasses are used in various navigation contexts.

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