Without paleomagnetism,_______________ .
A) our compasses today would not point to what we think of as North
B) a compass 90 million years ago would point to the same North we know today
C) we would not know that the continents themselves move, not the poles
D) All of the above are correct.

Question

Quizplus · Accepted Answer

Paleomagnetism is the study of the magnetic properties of rocks and sediments to determine the Earth's magnetic field in the past. Through paleomagnetism, we have been able to determine that the Earth's magnetic field has reversed polarity many times in the past, and that the continents have moved with respect to the magnetic North and South poles. Without paleomagnetism, we would not have been able to understand these phenomena, and thus, choices A, B, and C would all be incorrect.

Without Paleomagnetism,_______________