Rocks become magnetic when iron particles within the rock align with Earth's magnetic field. This typically occurs as the rocks cool and solidify from a molten state, allowing the magnetic minerals within them to lock in the direction of the magnetic field at that time.
Magnetism and Plate Tectonics Quick Check
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Question
Rocks become magnetic when(1 point)
Responses
Earth's magnetic field reverses direction.
Earth's magnetic field reverses direction.
continents move.
continents move.
rocks are heated to extreme temperatures.
rocks are heated to extreme temperatures.
iron particles within the rock align with Earth's magnetic field.
1 answer
2 answers