Author Question: The Coriolis effect causes the wind directions of circulation cells. Indicate whether the statement ... (Read 49 times)

Kikoku · **on:** Aug 22, 2018

The Coriolis effect causes the wind directions of circulation cells.
Indicate whether the statement is true or false

Question 2

How has the history of plate movement been captured in residual magnetic fields?

Rilsmarie951 · **Reply #1 on:** Aug 22, 2018

Answer to Question 1

False

Answer to Question 2

A compass needle points to the magnetic north pole because of the persistent magnetic field caused by the movement of molten metal in the Earth's outer core. As new seafloor is produced at spreading centers, the magnetic minerals (which are naturally occurring in basaltic magma) align with the Earth's magnetic field. As the new rock cools and hardens, the orientation of the Earth's magnetic field at that particular time is frozen and records information like a fossil does. Scientists use this information to measure spreading rates and are able to create detailed charts of the ocean floor dating back about 200 million years.