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Because "molten iron, moving very fast, does in fact produce a magnetic field". Even if that iron isn't molten moving a solid conductor, such as copper, fast will still produce a magnetic field. Crude electromagnet experiments, such as those spun by hand, are evidence of that fact.
If the Earth's outer core was "dead" (solidified) as it is on the Moon, and Mars (to a lesser degree), we wouldn't have that field and the atmosphere would have been long ago fried away by the solar winds.
What else can I help you with?
The possible source of earths magnetic core is?
The molten iron and medals inside the earths core are the reasons for the earths magnetic core.
Is there a bunny in the earths core?
no it is not true. there is solid iron and nickel in the Earths core
Earth's magnetic field results from the spinning of the?
The earths magnetic field results from deep in the earths core. Magnetic conduction from within the earths core is believed to be the cause of this.
What is the earths core?
FIGURE IT OUT YOURSELFFFFFFFFFFFF !!!!!!!!!!!!!! lol
What is the liquid layer of the earths core called?
The liquid layer of the Earth's core is called the outer core.
What element makes up of the earths core?
scientists think that the earths core is made up of mostly iron, and contains smaller amounts of copper nickel.
WHY do scientists think earths core contains irons?
The iron nickel core has been determined to actually exist from the examination of meteorites, from the gravitational field of Earth, and from the Earth's density in comparison to its volume.
What do geologist look at for proof earths core contains mostly iron?
Comits
What element makes up most of the earths core?
Iron is the primary element that makes up most of the Earth's core. It accounts for about 85% of the core's composition, with the rest likely being nickel in combination with some lighter elements.
Why do scientists think the earths core contains iron?
Scientists think the Earth's core contains iron because of the planet's magnetic field. Iron is a magnetic material, and the Earth's magnetic field is generated by the movement of molten iron in the outer core. Additionally, seismic waves and the density of the Earth indicate a high concentration of iron in the core.
How hot is earths iner core?
i think it is about 75000 degrees hot
Why do you think the iron at the earths core is partly liquid?
Heat and pressure.
Are you closer to the earths core or moons surface when standing at sea level?
Earth's core
Why do scientist think earths core contains iron?
Scientists believe Earth's core contains iron because of the planet's density and magnetic field. Iron is a dense material that would sink towards the core during the Earth's formation. The presence of iron is also supported by seismic wave behavior and the Earth's magnetic field, which is generated by the movement of molten iron in the outer core.
What is the layer that is liquid?
the layer in the earths suface that contains liquid rock is called: the inner core (mainly)\ outer core (some) and (parts) of the mantle.
What is the rock that is liquid?
the layer in the earths suface that contains liquid rock is called: the inner core (mainly)\ outer core (some) and (parts) of the mantle.
WHY IS THAT THE EARTHS INTERIOR IS BELIEVED TO HAVE HIGH TEMPERATURES?
The interior core contains many nuclear properties which gives of huge amounts of heat which then heats the core.
