Earth Magnetic Field MCQ (Multiple Choice Questions) PDF Download

Magnitude of magnetic field at Earth's surface ranges from

1. 0.25 to 1 gauss
2. 0.25 to 0.75 gauss
3. 0.25 to 0.65 gauss
4. 0.05 to 1.02 gauss

Direction of the north end of a compass needle points, corresponding to the direction of the Earth's magnetic field lines is called

1. electric north
2. magnetic north
3. true north
4. declined north

Angle on the horizontal plane between magnetic north and true north is called

1. magnetic declination
2. electric declination
3. magnetic inclination
4. electric inclination

Direction of north along a meridian towards the geographic North Pole is called

1. electric north
2. true north
3. magnetic north
4. declined north

Angle made by a compass needle when the compass is held in a vertical orientation is called

1. electric declination
2. magnetic declination
3. electric inclination
4. magnetic inclination