Earth as a Magnet
Earth as a Magnet: Overview
This topic discusses the existence of the earth’s magnetic field, earth’s magnetic south pole, and earth’s magnetic north pole. It helps us understand the earth’s magnetic declination and also explains it through a diagram.
Important Questions on Earth as a Magnet
What can be maximum angle of magnetic declination which is the angle between the true north and the magnetic north?
Magnetic declination or magnetic variation is the angle on the horizontal plane between magnetic north and true north.
The deviation of the compass from true north is an angle called magnetic declination.
What is the significance of magnetic declination?
What does magnetic declination means?
The geographical north pole is actually north pole itself.
The geographical north pole of the earth is actually south pole.
The geographical north pole is actually _____ pole.
Assertion: The geographic north-pole does not coincide with the magnetic north pole.
Reason: The axis of the hypothetical dipole inside the earth is tilted by approximately with respect to the axis of rotation of the earth.
The south pole of earth's magnet is in the
Assertion : The colourful curtain of green and pink lights in the sky, (which is called "Aurora Borealis") are seen in the polar regions like Alaska and North Canada, but it is not seen in India.
Reason : The earth's magnetic field lines come closer to each other at the magnetic poles, so the charge's density of the charges ejected from the sun, increases near the magnetic poles.
The magnetic field lines go inside the earth near the:
The axis of rotation of earth passes through:
Geographic north pole is near the:
If the magnetic declination at a certain location is degrees east, and a person is using a compass to navigate, how many degrees should they adjust their compass heading to find true north?
The magnetic declination is defined as
