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 11
Define magnetic inclination (dip).
Describe how the Earth's magnetic field helps in navigation.
Describe the process of magnetic field reversal and its possible effects on Earth.
Explain the difference between the geographic pole and the magnetic pole.
Explain the term 'magnetic meridian'.
Explain why the Earth's magnetic field is not perfectly aligned with its rotational axis.
Explain why the magnetic north pole is actually a south magnetic pole in terms of physics.
If the horizontal component of the Earth's magnetic field at a place is 0.3 Gauss and the angle of dip is 60°, calculate the total intensity of the magnetic field at that place. (Use: Total intensity = Horizontal component / cos(dip angle))
The Van Allen belts are associated with which of the following? (1) Earth's gravity, (2) Earth's magnetic field, (3) Earth's atmosphere, (4) Earth's rotation
What is the approximate value of the Earth's magnetic field strength at the surface? (1) 0.5 Gauss, (2) 5 Gauss, (3) 50 Gauss, (4) 500 Gauss
Which instrument is commonly used to measure the direction of the Earth's magnetic field? (1) Barometer, (2) Compass, (3) Thermometer, (4) Seismograph
Which layer of the Earth is responsible for generating the magnetic field? (1) Crust, (2) Mantle, (3) Outer core, (4) Inner core
At the magnetic equator, the value of magnetic dip is _______.
The angle between the geographic meridian and the magnetic meridian at a place is called _______.
The angle of dip at the magnetic poles is _______.
The Earth's magnetic field is similar to the field produced by a _______ magnet.
State whether the following statement is true or false: The Earth's magnetic field has remained unchanged since its formation.
True or False: The Earth's magnetic field is essential for the existence of life on Earth.
True or False: The Earth's magnetic field is uniform everywhere on the surface.
True or False: The Earth's magnetic field lines emerge from the magnetic north pole and enter the magnetic south pole.
