Why do geologists infer that the earth’s outer core is liquid?
Two kinds of waves created by earthquakes are compressional (P) waves and shear (S) waves. Both of these waves can travel through solids, but S waves cannot travel through liquids. Scientists figured out that the outer core must be liquid because S waves do not pass through it, but P waves do.
What is one of the reasons why scientists believe the outer core is liquid quizlet?
If the Earth's core were not metal, the planet would not have a magnetic field. Scientist know that the outer core is liquid because: S-waves can only travel through solids. S-waves cannot go through the outer core.
Why is Earth’s outer core liquid quizlet?
Outer core – It is liquid because the temperature is high and there is not enough pressure to make it solid.
How did scientists figure out the outer core was liquid quizlet?
Explanation. The evidence which indicates that Earth's outer core is liquid lies in the fact that S waves do not pass through the outer core. In addition to that, the outer core bends P waves.
Why the outer core is liquid and inner core is solid?
The metallic nickel–iron outer core is liquid because of the high temperature. However, the intense pressure, which increases towards the inner core, dramatically changes the melting point of the nickel–iron, making it solid.
What support the idea that the outer core is liquid?
The seismic waves released by earthquakes provide scientists with several forms of measurable evidence that supports the idea of the Earth's outer core being liquid. Two particular types of waves, compressional waves and shear waves — known commonly as P-waves and S-waves, respectively, provide direct evidence.
How do we know that the Earth’s outer core is liquid quizlet?
Evidence from earthquake waves indicates that the outer core is liquid.
What evidence do scientists use to support the idea that Earth has a liquid outer core?
The seismic waves released by earthquakes provide scientists with several forms of measurable evidence that supports the idea of the Earth's outer core being liquid. Two particular types of waves, compressional waves and shear waves — known commonly as P-waves and S-waves, respectively, provide direct evidence.
What evidence indicates the Earth’s core is a liquid?
The seismic waves released by earthquakes provide scientists with several forms of measurable evidence that supports the idea of the Earth's outer core being liquid. Two particular types of waves, compressional waves and shear waves — known commonly as P-waves and S-waves, respectively, provide direct evidence.
Why outer core is liquid while inner core is solid?
However, unlike the outer core, the inner core is not liquid or even molten. The inner core's intense pressure—the entire rest of the planet and its atmosphere—prevents the iron from melting. The pressure and density are simply too great for the iron atoms to move into a liquid state.
How do we know the earth has a liquid outer core quizlet?
Evidence from earthquake waves indicates that the outer core is liquid.
How did scientists use seismic waves to determine that Earth’s outer core is liquid quizlet?
P-waves speed up at the mantle-core boundary, so we know the outer core is less rigid than the mantle. The different densities of earth's layers cause seismic waves to be reflected or refracted (bent.) S-waves disappear at the mantle core boundary, so we know the outer core is liquid.
Why is the core liquid?
The inner core's intense pressure—the entire rest of the planet and its atmosphere—prevents the iron from melting. The pressure and density are simply too great for the iron atoms to move into a liquid state.
Why is the inner core solid and the outer core liquid quizlet?
The Earth's Inner core is solid because there is so much pressure exerted that it can only exist in the solid form. The outer core is liquid iron and nickel. Again, it is very dense but because it is in its liquid form it is less dense than solid and forms the outer core. The outermost layer.
Which statement best explains why Earth’s outer core is in liquid form?
Which statement best explains why Earth's outer core is in liquid form? The iron-nickel alloy melts due to hot temperatures. What stress causes this type of fault to form?
What do you think is reason why the outer core is liquid while the inner core remains solid Brainly?
However, the PRESSURE on the inner core is greater than the pressure on the outer core and the melting point of iron, the main constituent of the core, INCREASES as the pressure goes up. So, because the pressure effect overrides the temperature effect, the inner core is solidified.
What evidence indicates the earth’s core is a liquid?
The seismic waves released by earthquakes provide scientists with several forms of measurable evidence that supports the idea of the Earth's outer core being liquid. Two particular types of waves, compressional waves and shear waves — known commonly as P-waves and S-waves, respectively, provide direct evidence.
How do we know that Earth’s outer core is liquid quizlet?
Evidence from earthquake waves indicates that the outer core is liquid.
What evidence indicates that Earth has a solid inner core and a liquid outer core?
Summary. Density calculations show that Earth's core is metal. Seismic waves show that the inner core is solid and the outer core is liquid. Metallic meteorites and the magnetic field are also clues about the makeup of the core.
Is the outer core a liquid or solid?
But it may surprise you to learn that, in between the solid inner core and the solid mantle, lies a liquid layer more than 2,000 kilometers thick : the Earth's outer core .
What supports the inference that the outer core is liquid?
Evidence from earthquake waves indicates that the outer core is liquid.
Is the outer core liquid?
Outer Core The outer core, about 2,200 kilometers (1,367 miles) thick, is mostly composed of liquid iron and nickel.
What keeps the outer core liquid?
The energy supply that drives convection in the outer core is provided as droplets of liquid iron freeze onto the solid inner core. Solidification releases heat energy. This heat, in turn, makes the remaining liquid iron more buoyant.
How do we know the Earth has a liquid outer core quizlet?
Evidence from earthquake waves indicates that the outer core is liquid.
Which evidence supports the claim the outer core is composed of a liquid?
Both P waves and S waves can travel through solids, but the only P waves can travel through liquids. Seismic wave data shows that S waves do not pass through the outer core, and thus this part of the planet's interior must be liquid.
Is Earth’s outer core liquid?
The outer core is the third layer of the Earth. It is the only liquid layer, and is mainly made up of the metals iron and nickel, as well as small amounts of other substances. The outer core is responsible for Earth's magnetic field. As Earth spins on its axis, the iron inside the liquid outer core moves around.
Is the outer core of Earth liquid?
The outer core is the third layer of the Earth. It is the only liquid layer, and is mainly made up of the metals iron and nickel, as well as small amounts of other substances. The outer core is responsible for Earth's magnetic field. As Earth spins on its axis, the iron inside the liquid outer core moves around.
Which is the strongest evidence that the outer core of the Earth is liquid?
The seismic waves released by earthquakes provide scientists with several forms of measurable evidence that supports the idea of the Earth's outer core being liquid. Two particular types of waves, compressional waves and shear waves — known commonly as P-waves and S-waves, respectively, provide direct evidence.
Is the outer core solid or liquid?
Outer Core The outer core, about 2,200 kilometers (1,367 miles) thick, is mostly composed of liquid iron and nickel. The NiFe alloy of the outer core is very hot, between 4,500° and 5,500° Celsius (8,132° and 9,932° Fahrenheit).
How do scientists know about the liquid outer core?
The seismic waves released by earthquakes provide scientists with several forms of measurable evidence that supports the idea of the Earth's outer core being liquid. Two particular types of waves, compressional waves and shear waves — known commonly as P-waves and S-waves, respectively, provide direct evidence.