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To know which way to go when migrating.
Whales use the magnetic field of the Earth for navigation purposes on their long migrations across oceans. They do not have a very good sense of sight so they use magnetism intead. It is well known that migrating animals use the unseen magnetic grid to guide them in their migrations. The idea that there is an unseen web for communication between us may seem the stuff of Science Fiction but it wasn't long ago that gravity and magnetism occupied that same position in our consciousness. I know we like to proliferate the concept that if we can't see it, isn't real but surely there has been enough proof of grids around us that serve different purposes for us to believe that there may be a web that we tap into subconsciously to communicate with each other. Many researchers believe whales use biomagnetism to do this. We already know about lots of animals and birds that use magnetic material in their bodies to help them understand where they are. Whales can run into trouble when the field is reasonably strong. Animals use it every day.
Actually the only animals that would be affected by a magnet (unless they swallowed metal or another magnet) would be sharks and rays. Only sharks and rays have a sixth sense that can detect minute amounts of electricity. This sense is helpful because every time a muscle moves, it gives of a tiny amount of electricity that can be detected by the sense. this sense can only pick up the pulses from a few feet away. Magnets interfere with this sense and leave them disoriented and then they try to avoid it. This sense is possible because of little pores in the skin called the ampullae of lorenzini that have a jelly like substance inside them and the jelly picks up the electricity. Unfortunately that is as far as I know about this sense.
if you do not believe me look up the ampullae of lorenzini for yourself ** **** It is thought that homing pigeons use magnetic fields, when making long distance flights, so losing that ability or having it warped with strong artificial magnetism, before the bird has established it's whereabouts, could mean it never finds it's way home.
it would change the seasons cuasing their life to be altered and possibly result in their death.
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What do you call the force around a magnet?
the area of magnetic force around a magnet is called the magnetic field
What does an eletromagnet do in a motor?
Provide amoving magnetic force field.
What happens to the magnitude of a magnetic field if the electric field that induces it increases the rate at which it changes?
The magnitude of the magnetic field is decreased
Which layer of the earth produces its magnetic field?
The earth's outer core produces the magnetic field.
How does earth magnetic field affect a compass?
The earth's magnetic field acts upon the magnetic material of the compass needle, causing it to align to the field. Thus, the compass appears to point North, which is "magnetic north". Magnetic north and "true north" are about 300 miles apart.
How do we know that earth's magnetic field has undergone reversal in the past how do you think earth's reversal might have affected the evolution of life on our planet?
We know Earth's magnetic field has undergone reversals by studying magnetic minerals in rocks that show the alignment of the ancient field. The reversals likely had some impact on life, as magnetic field fluctuations may influence migration behaviors in animals that rely on geomagnetic cues for navigation. However, the full extent of how these reversals affected evolution is still being researched.
What is a magnetic field reversal?
A magnetic field reversal is when the Earth's magnetic field undergoes a change in polarity, where the North and South magnetic poles switch places. This phenomenon has occurred numerous times in the Earth's history, with the last reversal happening about 780,000 years ago. The process is complex and can take thousands of years to complete.
What is a good sentence for magnetic reversal?
A magnetic reversal is when the Earth's magnetic field changes direction, which has happened multiple times in the planet's history.
When was the most recent reversal of the earth's magnetic field?
As stated in Wikipedia: "The last reversal was theBrunhes-Matuyama reversal approximately 780,000 years ago."
What happens to the magnetic orientation of rocks as the poles reverse?
During a magnetic pole reversal, the magnetic orientation of rocks changes to align with the new orientation of the Earth's magnetic field. This means that the magnetization of rocks will also reverse during a geomagnetic field reversal event.
What is the process by which Earth's magnetic poles change places?
The process by which Earth's magnetic poles change places is known as geomagnetic reversal. This occurs when the Earth's magnetic field weakens, causing the north and south magnetic poles to switch positions. This reversal can take thousands of years to complete.
How many year marks the reversal of the sun's magnetic field?
11 years.
How do scientist know when magnetic reversal happens?
Scientists can identify when a magnetic reversal happened by studying the magnetic orientation of rocks. This is possible because magnetic minerals in rocks align themselves with the Earth's magnetic field at the time the rock forms. By analyzing the orientation of these minerals in ancient rocks, scientists can determine when a magnetic reversal occurred.
What happenes to the magnetic orientation of rock as the poles reverse?
There is nothing -_-
What happens in a magnetic reversal?
During a magnetic reversal, the Earth's magnetic field weakens, flips, and then eventually re-establishes itself with the opposite polarity. This process can take thousands of years to complete and can have various effects on navigation systems, animals relying on Earth's magnetic field, and even the climate.
What evidence is there for the reversal of the magnetic field of the earth?
Evidence for the reversal of Earth's magnetic field is found in magnetic minerals in rocks that preserve the direction of the field when they were formed. These minerals show alternating patterns of magnetization that suggest the field has reversed multiple times throughout Earth's history. Additionally, studies of sediment cores and oceanic crust have also provided evidence of past magnetic field reversals.
What if earth's magnetic field did not occasionally reverse polarity?
If Earth's magnetic field did not occasionally reverse polarity, the orientation of the magnetic field would remain constant for long periods. This could potentially impact navigation systems that rely on the Earth's magnetic field for guidance, and it might also change patterns of magnetism in rocks and minerals used for dating and geological studies. The reversal of polarity helps in understanding the Earth's dynamic processes and history over millions of years.
