subject

Earth’s Magnetism

Physics ⇒ Electricity and Magnetism

Earth’s Magnetism starts at 9 and continues till grade 12. QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Earth’s Magnetism. How you perform is determined by your score and the time you take. When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 12
A place has a total magnetic field of 0.5 G and an angle of dip of 30°. Calculate the vertical component of the Earth’s magnetic field at that place.
At which location is the vertical component of the Earth’s magnetic field zero?
Define the term 'angle of dip' or 'magnetic inclination'.
Describe the difference between the magnetic meridian and the geographic meridian.
Describe the significance of the magnetic declination for navigation.
Explain why a freely suspended magnet always aligns itself in the north-south direction.
Explain why the geographic and magnetic poles of the Earth do not coincide.
If the angle of dip at a place is 0°, what can you say about the location of that place?
If the horizontal component of the Earth’s magnetic field at a place is 0.3 G and the vertical component is 0.4 G, calculate the angle of dip at that place.
If the total intensity of the Earth’s magnetic field at a place is 0.6 G and the angle of dip is 45°, what is the value of the horizontal component?
Name the instrument used to measure the angle of dip.
State the effect of the Earth’s magnetic field on charged particles coming from the Sun (solar wind).
State the relation between the total intensity (B), the horizontal component (Bh), and the angle of dip (θ) of the Earth’s magnetic field.
The angle of dip at a certain place is 60°. If the total intensity of the Earth’s magnetic field is 0.5 G, what is the value of the vertical component?
The horizontal component of the Earth’s magnetic field at a place is 0.22 G and the angle of dip is 60°. Calculate the total intensity of the Earth’s magnetic field at that place. (Take G = gauss)