Earth’s Magnetic Field Quiz: Test Your Geophysical Knowledge!

1. What is the primary cause of Earth's magnetic field?

A. A giant bar magnet inside Earth
B. Convection currents in Earth's outer core
C. Earth's rotation alone
D. Magnetic rocks in Earth's crust

2. What is the term for the angle between Earth's magnetic field and the horizontal plane at a given location?

A. Magnetic inclination (dip)
B. Magnetic declination
C. Magnetic deviation
D. Magnetic azimuth

3. What is the magnetosphere?

A. A layer of Earth's atmosphere
B. A magnetic storm caused by solar flares
C. The magnetic field within Earth's core
D. The region around Earth dominated by its magnetic field

4. What is the approximate angle between Earth's magnetic axis and its rotational axis?

A. 0°
B. 11.5°
C. 23.5°
D. 45°

5. What phenomenon explains the generation of Earth's magnetic field through the movement of conductive fluids in its outer core?

A. Seebeck effect
B. Joule heating
C. Dynamo effect
D. Faraday's law