Earth’s Magnetic Field
Geography ⇒ Physical Geography
Earth’s Magnetic Field starts at 8 and continues till grade 12.
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See sample questions for grade 12
Define magnetic declination.
Describe how the movement of the Earth's outer core contributes to the magnetic field.
Describe the role of the Earth’s magnetic field in protecting life on Earth.
Explain the difference between magnetic meridian and geographic meridian.
Explain the significance of paleomagnetism in understanding the history of the Earth’s magnetic field.
Explain why the Earth's magnetic field is not perfectly aligned with its rotational axis.
Explain why the magnetic poles of the Earth do not coincide with the geographic poles.
If the angle of dip at a place is 60° and the total intensity of the Earth's magnetic field is 0.5 Gauss, calculate the vertical component of the magnetic field.
If the horizontal component of the Earth's magnetic field at a place is 0.3 Gauss and the angle of dip is 45°, calculate the total intensity of the magnetic field.
If the magnetic declination at a place is 5° east, what does it mean?
Name the process by which the Earth’s magnetic field is generated.
State one reason why the study of the Earth's magnetic field is important for geographers.
State the SI unit of magnetic field intensity.
What is a geomagnetic reversal?
What is the main cause of the Earth’s magnetic field?
What is the main difference between the magnetic field of the Earth and that of a bar magnet?
What is the significance of the South Atlantic Anomaly in relation to the Earth's magnetic field?
What is the value of magnetic inclination at the magnetic equator?
