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प्रश्न
Write a note on Earth’s magnetism.
उत्तर
- Earth has been assumed or imagined by scientists as a huge magnetic dipole.
- The south pole of the imaginary magnet inside the Earth is located near the geographic north pole and the north pole of the Earth’s magnet is located near the geographic south pole.
- The line joining these magnetic poles is called the magnetic axis.
- The magnetic axis intersects the geographic north pole at a point called the north geomagnetic pole or northern magnetic pole.
- It intersects the geographic south pole at a point called the south geomagnetic pole or southern magnetic pole.
- The magnetic axis and the geographical axis (axis of rotation) do not coincide with each other.
- The cause of the Earth’s magnetism, are as follows.
- Masses of magnetic substances in the Earth
- Radiations from the Sun
- Action of the Moon
APPEARS IN
संबंधित प्रश्न
Fill in the blank.
A magnet has ............. poles.
Suggest one way to recognize the magnetic field of the earth.
Fill in the blank.
A freely suspended magnet always comes to rest in the ................. direction.
Fill in the blank.
The north pole of the imaginary magnet of the earth is near the geographic ................. pole.
State if the following statement is true or false. Correct the statement if it is false.
If a bar magnet is cut in two pieces, then one piece will have only the north pole and the other will have only the south pole.
Select the correct option:
SI unit potential difference is:
Select the correct option:
Current in a circuit flows:
At what places on the earth will the angle of dip be maximum and minimum?
What is meant by the magnetic axis?
Write a note on Magnetar.
