Magnetism and Plate Tectonics Quick Check

Question

1 of 31 of 3 Items
Question
Rocks become magnetic when(1 point)
Responses

continents move.
continents move.

Earth's magnetic field reverses direction.
Earth's magnetic field reverses direction.

rocks are heated to extreme temperatures.
rocks are heated to extreme temperatures.

iron particles within the rock align with Earth's magnetic field.
iron particles within the rock align with Earth's magnetic field.

Answer 1

The correct response is:

iron particles within the rock align with Earth's magnetic field.

Rocks can become magnetic due to the alignment of iron particles within them in response to Earth's magnetic field, particularly as they cool from molten lava.