This knowledge is based on the behavior of seismic waves, particularly the behavior of P-waves and S-waves. S-waves are unable to travel through liquids, and this particular wave trait indicates a boundary between the solid mantle and the liquid outer core. The boundary between the inner core and outer core is also detected by a difference in velocities of P-waves. The Earth's magnetic field also originates in the liquid outer core by the movement and currents of molten metal in this layer. Scientific experiments have revealed that with the calculated density of the Earth, despite the incredible temperatures, the inner core should remain solid due to the massive pressures there.
As S-Waves do not propagate through the outer core a "shadow" zone is created on the other side of the earth from the source of seismic waves. In this zone no S-waves are detected.
Seismic echos demonstrate that the earth has a liquid core.
I understand that the inner core is solid, and that further out it is liquid. The evidence comes mainly from the way waves (such as those created from earthquakes) behave.
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The Heat and pressure
mantle
Magma. It is lava once it leaves the Earth's crust.
The layer of the earth made of liquid metal is called the Outer Core.
There is no layer of Earth that is predominantly molten rock. The only layer of Earth that is liquid is the outer core, however this is mainly iron and nickel. The mantle, the thickest layer of the Earth, contains rock that is "ductile" (i.e. very viscous and able to flow very slowly), but not technically "liquid."
False. Earth's core has solid and liquid parts.
Core.
A geophysicist may say that the earth has only one layer which is liquid, the outer core. However a hydrologist may also include the hydrosphere, although whether this can truly be considered a layer of the earth is debatable.
A geophysicist may say that the earth has only one layer which is liquid, the outer core. However a hydrologist may also include the hydrosphere, although whether this can truly be considered a layer of the earth is debatable.
A geophysicist may say that the earth has only one layer which is liquid, the outer core. However a hydrologist may also include the hydrosphere, although whether this can truly be considered a layer of the earth is debatable.
Magma. It is lava once it leaves the Earth's crust.
The liquid layer of the Earth's core is called the outer core.
The layer of the earth in liquid form is the mantle. It is made up of magma and lies directly beneath the earth's crust. This liquid is responsible for moving continents and earthquakes. It is the thickest layer of the earth.
The layer of the earth in liquid form is the mantle. It is made up of magma and lies directly beneath the earth's crust. This liquid is responsible for moving continents and earthquakes. It is the thickest layer of the earth.
only liquid layer of the earth
the less dense layer is on top and the more dense layer is below.
The layer of the earth made of liquid metal is called the Outer Core.
The outer core is the only Earth layer that is liquid.
The core is the chemical layer of the Earth with a liquid layer (the outer core), and a solid layer (the inner core).