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There are two types of seismic body waves that travel through the earth when an earthquake occurs. P-waves and S-waves. When an earthquake occurs it has been observed that there is a zone at the opposite side of the earth where P-waves are detected but S-waves are not. S-waves are not able to travel through liquids where as P-waves can and as such it is believed that the shadow zone is caused by the presence of a liquid outer core.

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Q: What evidence do we have that Earth's outer core is molten?
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Related questions

What area of earths interior is molten?

The outer core


Is Earth's inner core surrounded by a liquid outer core?

Yes earths inner core is a dense ball of metal earths outer core is a layer of molten (melted) metal


Which of the Earths layers is just below lower mantle?

The molten bit of the Iron core.


How do you know earths outer core is liquid?

Volcanoes allow the molten lava from the outer core to pass through weak spots in the mantle.


What is the depth earths outer core?

The Earth's outer core is a molten layer primarily composed of iron and nickel. Its outer boundary lies 2,890 kilometers beneath Earth's surface.


What do geologists think creates earths magnetic field?

Electric currents in Earth's molten outer core.


Is the earths core made of liquid iron?

The outer portion of the core is mostly molten iron. The inner core is solid metal.


What molten metal forms the earths core?

The question's wrong there...the inner core is made out of SOLID iron and nickel. But if you were talking about the OUTER core, it is extremely runny and gooey iron and nickel and a piece of molten crust.


Does the moon have a large molten core?

No. It has a solid core, surrounded by a fluid outer core, surrounded by a partially melted core, but its relatively small (20%) compared to the earths (50%).


Is molten iron and nickel in the outer core spinning?

Yes! The molten iron and nickel in the outer core is spinning.


What is the earths outer core?

The outer core is a liquid that is in between the inner core and mantle. It is 2,000km thick.


Is the core of the earth molten?

Part of it is. The outer core is molten while the inner core is solid.