0
The earth's magnetic field is present because of the molten iron in its core. Always a little change keeps on occurring in the earth's magnetic field. Although the change is very little with respect to time,but it is considered one of the major factors for the end of this world.
What else can I help you with?
Why if the same current flows in a wire coil and a single wire loop the magnetic field inside the coil is stronger than the field inside the loop?
why, if the same current flows in a wire coil and a single loop, the magnetic field inside the coil stronger than the field inside the loop
Why does the north pole of a magnet point towards the north pole of earth?
It is unclear how the earth developed its magnetic field. The Earth's magnetic field approximates a magnetic dipole. And we believe that dynamo action within the molten layers of iron and nickel around the solid core of the earth generates the field, but investigators have not been able to pin down what it was that initiated the field. Note that the magnetic field intensity of the Earth's magnetic field varies over time, becoming weaker and stronger. Also, the polarity of the Earth's magnetic field moves or migrates within the planet over time as well, and the polarity of the field has demonstrated a tendency to "switch" or "reverse" at intervals. This geomagnetic reversal is well documented by a number of investigators. Use the link below for more information.
What was the significance of core?
Core, I am assuming, means "magnetic core memory". This was an early type of persistent memory used on early computers. You could put a core on a shelf and pull it down for use several years later, and it would still have the data in memory as it was the day you put it on the shelf. Core memory was used as permanent random-access memory on early computers A very small magnetic doughnut (a single core) would have three wires passed through it. Two wires would be used to set or read the position of the magnetic field of the particular core doughnut. A third wire was used to carry the signal if the field was reversed. All magnetic fields can be reversed by creating a nearby magnetic field at sufficient strength. Current in one of the address wires was insufficient to cause a change in the magnetic field of the doughnut core. But when both address wires carried current at the same time, the magnetic field generated would flip the field of the core to align with the field produced by the current in the address wires. When one of these tiny doughnuts switched magnetic poles a current was then introduced into the sensor wire and read as a change that might indicate a 1 or a zero. The machine would then put the core back the way it was to preserve that value stored in that memory location. All of this wiring using these very tiny doughnuts of magnetic material was difficult and cost a lot of money to produce. It was all they had for permanent storage until transistors came into common use.
Identify how magnetic symmetry can be used as evidence of sea floor spreading?
As the sea floor spreads the magnetic orientation in the rocks as they cooled is preserved. As the earth's magnetic field changes then a distinct pattern is imprinted in the rocks. If sea floor spreading is true then this unique pattern should be the same on both sides from the spreading point. Measurements of sea bottom rocks verify this symmetry is true. :)
Are the elements that make up the iron triad radioactive or are they magnetic or are they alkali metals or are they alkaline earth metals?
There transition, which is the same thing as magnetic
Where is the Earths magnetic field at its strongest?
The Earth's magnetic field is strongest at the North and South magnetic poles, which are not the same as the geographic North and South poles. The magnetic field strength varies at different locations on the Earth's surface.
Is it true that the earths magnetic field always stayed the same?
No, the Earth's magnetic field is not constant and has changed in strength and direction over geologic time. This phenomenon is known as geomagnetic reversal, where the magnetic north and south poles switch places. The Earth's magnetic field is influenced by processes in the planet's outer core, so changes are to be expected over time.
Earths magnetic field can make a magnet out of an iron bar by causing the magnetic domains to?
align in the same direction, creating a magnetic field within the iron bar. This alignment occurs due to the interaction between the Earth's magnetic field and the magnetic properties of the iron, resulting in the iron bar becoming magnetized.
Is the earths gravity the same as the magnetic field if not what is the difference in effects?
i dont know its aload of bumf go away :p
Earths magnetic field results from movements in what?
The Earth's magnetic field results from electric currents in the mantle and outer core around the iron solid core; every electricmagnet is prduced as a result of electricity flowing around a iron core - the same principle works in our own magnetic field.
Is Earths magnetic field widening?
I am not sure what you mean by widening. The Earth's magnetic field is a result of the fact that the Earth has a molten Iron core and the planet is rotating quite rapidly. The strength of the magnetic field in these circumstances is dependent on the speed of rotation. As the Earths rotational speed is slowing (due to the friction of the tides caused by the moon) the Earth's magnetic field is gradually weakening over geological time scales but this is not significant in terms of human time. The other affect of the rotating Iron core on the magnetic field is what is called field inversions. In the same was as the Sun goes through an 11 cycle of activity during which the N and S magnetic poles flip, the Earth's poles also flip about once every 75-100 thousand years. There is some evidence that the Earth's poles are in the process of flipping at the moment and during this process, in the same was that the Sun develops Sun spots, multiple poles appear at various locations round the Earth. This effect could be said to distort (or widen) the Earths magnetic field.
How do earths magnetic field magnetize an iron bar over many years?
Ferromagnetic materials are randomly distributed, but in a magnetic field, they can become aligned in the direction of the magnetic field. The earth's magnetic field has a fairly stable direction over very long time periods (many thousands of years). :D hope u injoy
Is the earths dip the same everywhere in the world?
No, the Earth's magnetic dip angle varies at different locations on Earth. The magnetic dip, also known as inclination, is the angle between the magnetic field lines and the horizontal plane, and it changes as you move from the magnetic North or South poles towards the equator.
Earth's magnetic field results from movements in the what?
The Earth's magnetic field results from electric currents in the mantle and outer core around the iron solid core; every electricmagnet is prduced as a result of electricity flowing around a iron core - the same principle works in our own magnetic field.
Is magnetic flux the same as the magnetic feld?
magnetic field is a imaginary area around a manetic material where other magnetic subestences experience some force but flux is the imaginary lines of force that arise from magnet which indicate direction of force around it.
How do rocks record changes in earths magnetic field?
Rocks which are liquid (lava) have their magnetic particles aligned to the local magnetic field as they cool and solidify. The rocks can be dated by the radioactive decay processes. If there is a new layer of rock (lava) laid down over this same deposit and the magnetic filed has altered, the new rock will have a different imposted magnetic field and age than the older rock.
Are all the rocks on the seafloor aligned according to the same magnetic field orientation?
No, rocks on the seafloor do not all align according to the same magnetic field orientation. The Earth's magnetic field has shifted over time, causing rocks to record different orientations depending on when they formed. This creates magnetic anomalies that scientists use to study the history of the Earth's magnetic field.
