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

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

What is the y-intercept of the function f(x) = -2/3x + 1/3 -2/9 -1/3 1/3 2/9

If you shift the quadratic parent function, f(x)=x^2, right 12 units, what is the equation of the new function?

In general, the farther you are from other road users, the A. lower your crash risk B.higher your crash risk C. slower they are probably moving D. faster they

Which is the correct statement ?

What's one thing you should watch out for when driving on country roads or residential streets? A. Steep hills with good visibility and road maintenance B. Dr

Find the slope of the line that passes through the points (1, -3) and (2, -1). a.) one half b). negative one half c). -2 d).2

2. What is the name for a substance formed in a chemical reaction?

how do i solve 3/-2 x = 24

At a carnival, you can try to ring a bell by striking a target with a 8.91-kg hammer. In response, a 0.411-kg metal piece is sent upward toward the bell, which

Deanna has $150.00 in her account.At the end of each week, she plans to take $15.00 out of her account for her spending money. Write an equation to show the rel