Earth’s Magnetic Field
Geography ⇒ Physical Geography
Earth’s Magnetic Field starts at 8 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Earth’s Magnetic Field.
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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 magnetic declination at a place is 5° east, what does it mean?
At which location is the magnetic inclination 90°? (1) Magnetic equator, (2) Magnetic poles, (3) Geographic equator, (4) Tropic of Cancer
What is the approximate location of the magnetic north pole as of the early 21st century? (1) Near Canada, (2) Near Australia, (3) Near South Africa, (4) Near Brazil
What is the approximate range of the Earth's magnetic field strength at the surface? (1) 25 to 65 microtesla, (2) 100 to 200 microtesla, (3) 1 to 5 tesla, (4) 0.1 to 0.5 tesla
Which instrument is used to measure the direction of the Earth’s magnetic field? (1) Barometer, (2) Compass, (3) Seismograph, (4) Anemometer
The angle between the magnetic meridian and the geographic meridian at a place is called _______.
The angle made by the Earth's magnetic field with the horizontal at any place is called _______.
The Earth's magnetic field lines emerge from the _______ magnetic pole and enter the _______ magnetic pole.
The horizontal component of the Earth’s magnetic field is maximum at the _______.
True or False: The direction of the Earth’s magnetic field has reversed many times in the past.
True or False: The Earth’s magnetic field is static and does not change over time.
True or False: The Earth's magnetic field can be detected far into space.
True or False: The Earth's magnetic field is essential for navigation.
