Earth’s Magnetism
Physics ⇒ Electricity and Magnetism
Earth’s Magnetism starts at 9 and continues till grade 12.
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See sample questions for grade 9
Describe the effect of the Earth’s magnetic field on a compass needle.
Describe what would happen if the Earth’s magnetic field disappeared suddenly.
Explain the term ‘magnetic meridian’.
Explain what is meant by magnetic declination.
Explain why a freely suspended magnet always points in the north-south direction.
Explain why the Earth’s magnetic field is important for life on Earth.
Name the three elements of the Earth’s magnetic field.
A compass is taken from the equator to the magnetic pole. What happens to the angle of dip? (1) It increases (2) It decreases (3) It remains the same (4) It becomes zero
A compass is taken from the equator to the magnetic pole. What happens to the angle of dip? (1) It increases (2) It decreases (3) It remains the same (4) It becomes zero
A compass needle placed at the magnetic equator will point in which direction? (1) Vertically upward (2) Vertically downward (3) Horizontally north-south (4) Randomly
What is the approximate distance between the geographic and magnetic poles of the Earth? (1) 100 km (2) 500 km (3) 1000 km (4) More than 1000 km
Which instrument is commonly used to detect the direction of the Earth’s magnetic field? (1) Barometer (2) Compass (3) Thermometer (4) Voltmeter
Fill in the blank: The Earth’s magnetic field acts as a shield against harmful ________ from the Sun.
Fill in the blank: The Earth’s magnetic field lines are ________ inside the Earth and ________ outside the Earth.
Fill in the blank: The Earth’s magnetic field lines emerge from the ________ magnetic pole and enter the ________ magnetic pole.
Fill in the blank: The horizontal component of the Earth’s magnetic field is maximum at the ________.
State whether the following statement is true or false: The Earth’s magnetic field is important for navigation.
State whether the following statement is true or false: The Earth’s magnetic field is only present at the surface and not in space.
State whether the following statement is true or false: The Earth’s magnetic field is responsible for the formation of auroras.
State whether the following statement is true or false: The magnetic equator coincides with the geographic equator.
