The Compass (Grade 10 NSC Matric Physical Sciences): Flashcards

Navigation instrument that detects magnetic fields

Magnetised needle and pivot

Aligns with Earth's magnetic field direction

Points where Earth's rotation axis meets surface

Points where Earth's magnetic field lines converge

$11.5°$ between magnetic and geographic north

Magnetic north, not true north

Approx. every $200,000$ years

Protective region where Earth's magnetic field operates

Solar wind particles colliding with atmosphere particles