Earth’s magnetic field has reversed a number of times in its history

Studiot

Hello, momentum, I note that English is not your first language.

You might like to know that the word 'drift' has two nearly opposite meanings.

The meaning here is

'move in a casual or aimless manner'

drift into sleep
the leaves drifting about in the road

but drift is also used in the sense of driven (from drive) where something is directed by an outside force or agency.

a snow drift is a pile of snow collected (driven) by the wind
get my drift = the aim or purpose of a thought


There are a significant number of words in English that have more than one meaning. It can be quite confusing if some of these meanings are also opposite.