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 10
A freely suspended magnet always aligns itself in which direction?
A place has a horizontal component of 0.2 G and a total magnetic field of 0.4 G. Calculate the angle of dip at this place.
Define magnetic declination.
Describe what would happen if the Earth’s magnetic field disappeared suddenly.
Explain what is meant by the term ‘magnetic meridian’.
Explain why the magnetic declination varies from place to place on the Earth.
If the angle of dip at a place is 90°, where is this place located?
If the horizontal component of the Earth’s magnetic field is 0.25 G and the angle of dip is 60°, calculate the vertical component.
Name the three elements of the Earth’s magnetic field.
State one reason why the Earth’s magnetic field is important for life on Earth.
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.
The horizontal component of the Earth’s magnetic field is maximum at which location?
What is the approximate value of the Earth’s magnetic field near the surface?
What is the name of the imaginary line joining the magnetic north and south poles of the Earth?
What is the significance of the horizontal component of the Earth’s magnetic field?
What is the value of the angle of dip at the magnetic equator?
A magnetic needle is placed at a location where the horizontal component of the Earth's magnetic field is zero. What will be the orientation of the needle? Explain your answer.
A scientist measures the angle of dip at two different locations: Location A has an angle of dip of 0°, and Location B has an angle of dip of 90°. What can you infer about the positions of these two locations on Earth?
Describe how the Earth’s magnetic field protects living organisms from harmful solar radiation.
Explain why the geographic north pole of the Earth corresponds to the magnetic south pole.
