barbaarm000 barbaarm000
  • 03-06-2019
  • Physics
contestada

How do scientists know the Earth’s magnetic field has reversed itself many times in the past?

Respuesta :

queenxx27
queenxx27 queenxx27
  • 03-06-2019

Answer:

Changing frequency over time

Explanation:

Changing frequency over time. The rate of reversals in the Earth's magnetic field hasvaried widely over time. 72 million years ago (Ma), the field reversed 5 times in a million years.

Answer Link

Otras preguntas

how many seconds in a day
Mr.Vance's yearly taxable income is $35,675.What is the dollar amount taken out for taxes based on Mr.Vance's taxable income?
Compare the militarists in Japan with the European Fascist.
which of the following expressions does not contain any like terms? a. 2x^2+3x-4x+2 b. xy+yz-17 c. x^3+x^2-2x-x^2 d. 14+8+y
king of the hill characters
Novels such as Oliver Twist and Nicholas Nickleby show Dickens' penchant for mixing a. fantasy with suspense. b. mystery with humor. c. humor with horror. d. ro
what is soft money and why is it controversial
2x²+10x=0 by using any method
What are the weaknesses in writing a letter?
Prior to the 1500's, most people accepted the view that the planets within our solar system revolved around