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How has the history of plate movement been captured in residual magnetic fields?
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How do magnetic stripes show the history of Earth's magnetic field?
as you move away from an ocean ridge the rocks get older
Explain how the reversal of earths magnetic poles can be produce a calendar for part of earths history?
In rock formed when the sea floor is being built, such as at the mid-Atlantic ridge, the minerals preserve the magnetic polarity. Since the flipping of the poles is fairly regular, the count of the bands can give a time.
How does magnetic dating work?
Paleomagnetic dating utilizes records of "how things were" in a given area across time in the past as a basis for comparison to an unknown sample in order to date it. A link is provided to the Wikipedia article on paleomagnetism, which is the basis for paleomagnetic dating.
How can scientist tell that earth's magnetic field sometimes reverses direction?
You don't have to be a scientist to observe that fact. All you have to do is take any magnet and hang it up on a thread, so it's free to rotate and point wherever it wants to point. When you do that, you find that every magnet that's free to turn always turns to point at the same place ... a spot in far northern Canada. When you do this experiment with thousands of magnets in thousands of places all over the earth, and keep records of the direction that magnets point in various places, it all goes together to give a beautiful diagram of the earth's magnetic field. People who do a lot of traveling over long distances have used this fact for thousands of years to build a device that helps them find their way around the surface of the earth. The device is called the 'magnetic compass'.
Does temperature affect magnetic force?
Yes, temperature affects the strength of a magnet. Colder temperatures will permit the magnetic field strength to increase a bit and hotter temperatures will decrease it a bit. The effects can be demonstrated by a simple experiment with a bar magnet and a handful of carpet tacks. Freeze the magnet. Pick up some tacks. Take them off and count them. Record the data. Drop the magnet in boiling water. (And please be smart and safe about this part.) Use tongs to get it out and hold it with an oven mitt to pick up tacks again. Take them off and count them. Record the data. Compare the data. Repeat a few times. Compare the data from all runs. (Tacks work better than paper clips because they're smaller and yield a bit more accuracy in an experiment. Iron filings are a mess; they cannot be counted and must be weighed.) What happens at really high temperatures? There is a point called the Curie point or Curie temperature (Tc) at which the magnetic properties disappear altogether. This temperature varies from material to material as one could expect. The material's magnetic domains are no longer "held in place" by the metallic crystal matrix when the Tc is exceeded. The atoms have too much kinetic energy and a random distribution of alignments of the domains will occur. Bye bye magnetism, hello paramagnetism.
What is the Plymouth Brethren movement about?
The Plymouth Brethren movement is a conservative movement with an Evangelical Christian history. This history can be traced back to Dublin, Ireland, in the 1820s.
How do magnetic stripes show the history of Earth's magnetic field?
as you move away from an ocean ridge the rocks get older
How do magnetic stripes show Earth's history of magnetic fields?
As you move away from an ocean ridge, the rocks get older.
What has the author Ruth Rouse written?
Ruth Rouse has written: 'A history of the ecumenical movement' -- subject(s): Ecumenical movement, Church history, History, Christian union, Church, History of doctrines
Where can you learn about the Libertarian Movement?
Here's a page about the libertarian movement's beliefs and history.
History of magnetic effect of electric current?
i dont care i LOVE it
What is a movement in history?
Susan b Anthony
Is it true history follows movement?
yes, it does
How do the Assyrians and the Babylonians fit into Israelite history?
These people captured the Jews and took them as captives.
How do magnetic show the history of ea?
A fault generally occurs at a tranform boundary
What has the author Andrew F Walls written?
Andrew F. Walls has written: 'Missionary Movement in Christian History' -- subject(s): Missions, History, Christianity and culture, History of doctrines, Theory 'The Missionary Movement In Christian History'
History of trade unions movement in Kenya?
yes
