0
Roughly 750,000 years ago.
Wiki User
∙ 8y ago
Add your answer:
Earn +20 pts
Which best describes search north magnetic pole?
In our solar system has magnetic pole reversal
Which body in our solar system has magnetic pole reversal?
the sun
What is reverse magnetic polarity?
lets say the earth was to have a magnetic polarity reversal the north pole would become the south pole, and the south pole would become the north pole. i hope that helps.
The rate of seafloor spreading can be calculated by?
b. Knowing the various dates for the magnetic pole revesals, and the distance from the location of a known reversal site to the ocean ridge.
What is pole reversal?
what is a pole reversal
What direction does a compass always point?
Magnetic northNorth.In line with the earth's magnetic field.A way to remember the four directions on a compass is Never Eat Soggy Waffles or Never Eat Slimy Worms.magnetic north
Do the earth's magnetic poles have reversed themselves?
Yes, in the history of Earth, it has happened a handful of times. When it switches we experience what we call a pole reversal. Right now Earth is currently in the process of a pole reversal (the South Pole is moving northwards).
What is a sentence with magnetic pole?
Where is the magnetic pole
The sun's pole reversals are tied to its?
The sun's pole reversal is tied to the sunspot cycle.
What is the pattern of magnetic polarity reversals?
In a geomagnetic reversal, the south and north magnetic poles flip locations. A magnetic pole reversal takes place every 450,000 years on average, but this is not regular. We are way overdue since the last reversal was 780,000 years ago. There is a pattern in the magnetic polarity of basaltic rocks on opposite sides of a mid-ocean ridge. Basalt contains tiny magnetic crystals that point to the location of the north magnetic pole at the time the lava cools. The rocks at the ridge have positive polarity, but on either side of the ridge the polarity is negative, indicating that those lavas cooled when the magnetic field was opposite of what it is today. On either side of the basalt with negative polarity are more rocks with positive polarity. This pattern continues on both sides of the mid-ocean ridge across the ocean basin. The pattern of magnetic polarity is one of the main lines of evidence for seafloor spreading, which is the mechanism for plate tectonics.
The most logical interpretation of apparent polar wandering is?
the north pole (or south poled during periods of magnetic reversal) has remained fixed and the continents have moved in relation to the pole. Page 90 Chapter Three
Will the world be able to survive if a polar shift occurs?
Yes. In fact Earth's poles have shifted many times in its existence. Random Sudden Pole Shift is a theory that proposes what would happen if Earth's poles were to suddenly and violently flip, thus casuing cataclysmic events. There is little scientific evidence to support this theory. The scientific community recognizes "magnetic reversal." When Earth's magnetic fields do flip (i.e. What was magnetic North, becomes magnetic South), this process takes several thousand years. Though a magnetic reversal has never been observed by modern man, primitive species of man existed during the last reversal, about 800,000 years ago. Such a reversal would not inhibit the biology of living things; however, the effects that such a reversal would have on modern intrumentation adn technology remains to be seen.
