Question

Rocks become magnetic when(1 point)
Responses

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

Earth's magnetic field reverses direction.

Answer 1

Rocks become magnetic when **iron particles within the rock align with Earth's magnetic field**. This typically occurs during the cooling process of igneous rocks or through a process called magnetization in sedimentary and metamorphic rocks.