Question

____ has magnetic particles that align in the same ____ as the ___. When there is pole ______, the particles align the other direction. This creates ______ in the oceanic crust. This pattern would not be seen if there was no seafloor spreading.

A) Lithosphere, magnetic pole, direction, reversal, bands
B) Volcanos, igneous rock, magnetic pole, direction, lithosphere
C) Magnetic pole, igneous rock, lithosphere, bands, direction
D) Reversal, lithosphere, magnetic pole, direction, bands

Answer 1

The correct answer is 'Lithosphere, magnetic pole, direction, reversal, bands,' showing that magnetic particles align according to Earth's magnetic field, which reverses over time, providing evidence for seafloor spreading.

Step-by-step explanation:

The correct answer to fill in the blanks in the given question is: Lithosphere, magnetic pole, direction, reversal, bands. This implies that the magnetic particles within the lithosphere align in the same direction as the Earth's magnetic field. When a pole reversal occurs, these particles align in the opposite direction. This process results in symmetric bands of normal and reversed magnetic polarity in the oceanic crust. This pattern provides evidence for seafloor spreading and is directly related to the geological concept known as plate tectonics. By understanding the rate of seafloor spreading, scientists can estimate the historical record of magnetic field reversals.

Seafloor spreading is a process that occurs at mid-ocean ridges, where new oceanic crust is formed. The alignment of magnetic particles in the crust provides evidence for plate tectonics and the movement of tectonic plates over time.