Earth’s Magnetic Field
Physics ⇒ Earth and Space Physics
Earth’s Magnetic Field starts at 8 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Earth’s Magnetic Field.
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 8
Describe how scientists know that Earth’s magnetic field has reversed in the past.
Describe one way in which Earth’s magnetic field is important for life on Earth.
Describe what happens to a compass needle at the magnetic equator.
Explain what is meant by ‘magnetic declination’.
Explain what would happen if Earth’s magnetic field disappeared.
Explain why a compass needle points north.
Explain why the magnetic poles are not fixed.
A scientist measures the direction of a compass needle at different locations on Earth. She notices that the needle tilts downward at the North Pole and is horizontal at the equator. What does this observation tell us about the shape of Earth’s magnetic field?
Which layer of the Earth is mainly responsible for generating the magnetic field?
(1) Crust
(2) Mantle
(3) Outer core
(4) Inner core
Which of the following best describes the direction of Earth’s magnetic field lines outside the Earth?
(1) From north to south
(2) From south to north
(3) In circles
(4) Randomly
Which of the following best describes the magnetosphere?
(1) The solid part of the Earth
(2) The region of space affected by Earth’s magnetic field
(3) The layer of gases around Earth
(4) The ocean currents
Which of the following best describes the shape of Earth’s magnetic field?
(1) Circular
(2) Bar magnet-like
(3) Square
(4) Spiral
Fill in the blank: The area around Earth affected by its magnetic field is called the _______.
Fill in the blank: The Earth’s magnetic field is similar to that of a giant _______ magnet.
Fill in the blank: The magnetic field lines are _______ together where the field is strongest.
Fill in the blank: The magnetic field lines emerge from the _______ magnetic pole and enter the _______ magnetic pole.
True or False: Earth’s magnetic field protects us from harmful solar radiation.
True or False: The direction of Earth’s magnetic field has reversed many times in the past.
True or False: The Earth’s magnetic field can reverse its direction.
True or False: The Earth’s magnetic field extends far into space.
