For compasses.
It's important because it protects us from the suns radiation.
The closer the lines the stronger the magnetic field.
this article is incorrect about earths magnetic effect on the body. Studies show that the body is south magnetic interior and north magnetic exterior in the daytime and this switches at night. It is this switch to inner north that stimulates the secretion of melatonin which puts us to sleep. so head facing north is the best for sleep. But I find everyone is different. and the earths magnetic field has been weakening for some time and is very low so not having its full effect.
what characteristic of earth's interior is likely to be responsible for earth's magnetic field
Well, it gives us somewhere to live.
It's important because it protects us from the suns radiation.
No, the gravitational field keeps us in orbit around the sun. The earths magnetic field provides us with some protection from charged particles from the sun.
It protects us from the magnetic/electrical radiation that mainly comes from the sun. High radiation periods coincide with solar storms, et al.
Most importantly to us, the earth has a permanent magnetic field.
The magnetic field of the Earth protects us from cosmic radiation.
The closer the lines the stronger the magnetic field.
the earths magnetic field is the only reason that were alive right now the reason being is the suns heat rays are very powerful and very hot if the magnetic field would be gone everything on earth would vanish into ashes.
Directly : not at all. BUT It deflects the solar wind, thus the radiation levels on the Earth's surface is compatible with life; and there's still enough air for us to breath.
Almost all creatures sense magnetic field except us, human.
The closer the magnetic field lines, the stronger the magnetic force in that area.
Earths electromagnetic field is essiential to life on earth. Its deflects all the harmful radiation given off by the sun and in deep space. It is widely accepted that it is generated by our earths core. The core at the centre of the earth spins at a tremendous rate and the energy that it creates by doing this is thought to give of the electromagnetic energy.
we have the ozone layer that that acts as a barrier of the earth, ozone layer protects us from harmful effect of ultraviolet light...and the other barrier is what we call the earths magnetic field of magnetosphere which protect us from the sun's solar burst....