What Is The Outer Core State Of Matter

What Is The Outer Core State Of Matter?


Is the outer core solid or molten?

The outer core is a liquid mix of iron and nickel but the inner core is solid metal. Sometimes hot molten rock called magma bursts through Earth’s surface in the form of a volcano.

Is the outer core a solid liquid or gas Why?

The core (mainly nickel-iron) has two layers. The outer core is liquid because the temperature is hotter than the melting points of iron and nickel. The inner core although even hotter is solid because of the intense pressure.

Is the outer core liquid or solid metal?

Metals such as iron are magnetic but rock which makes up the mantle and crust is not. Scientists know that the outer core is liquid and the inner core is solid because: S-waves do not go through the outer core. The strong magnetic field is caused by convection in the liquid outer core.

Is the outer core solid liquid or plastic?

Earth’s Outer Core

The outer core is the liquid largely iron layer of the earth that lies below the mantle. Geologists have confirmed that the outer core is liquid due to seismic surveys of Earth’s interior. The outer core is 2 300 km thick and goes down to approximately 3 400 km into the earth.

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Is the outer core solid?

The outer core is not under enough pressure to be solid so it is liquid even though it has a composition similar to that of the inner core. The temperature of the outer core ranges from 4 300 K (4 030 °C 7 280 °F) in the outer regions to 6 000 K (5 730 °C 10 340 °F) closest to the inner core.

Where is the outer core?

The outer core of the Earth is a liquid layer about 2 261 km thick composed of iron and nickel which lies above the Earth’s solid inner core and below its mantle. Its outer boundary lies approximately 2 890 km (1 800 mi) beneath the Earth’s surface.

Is the outer core liquid?

The outer core about 2 200 kilometers (1 367 miles) thick is mostly composed of liquid iron and nickel. … The liquid metal of the outer core has very low viscosity meaning it is easily deformed and malleable.

How do we know the outer core is liquid?

Scientists figured out that the outer core must be liquid because S waves do not pass through it but P waves do. … Thus by observing many seismic waves from many earthquakes all over the world scientists have been able to work out the density of different parts of the Earth (i.e. the core mantle and crust).

Is the core solid liquid or gas?

The Earth’s inner core is a solid sphere of iron and a little nickel. It is easily hot enough to be a liquid in fact the average temperature in the inner core is about 11 100° F (6150° C.) However the immense pressure on top of it keeps it squeezed into a solid.

Is the outer core made of solid metal?

The outer core is about 1 400 miles thick and it’s made mostly of a combination (called an alloy) of iron and nickel along with small amounts of other dense elements like gold platinum and uranium. These metals can of course be found on the surface of Earth in solid form.

What is the meaning of outer core?

Outer-core meaning

(planetology) The hot liquid material found near the centre of some planets distinct from the solid inner core. (geology) The part of the Earth between the mantle and inner core responsible for generating the planet’s magnetic field.

Why is the outer core liquid metal?

The outer core is a liquid alloy of mainly iron and nickel. The reason why the core is metal is that the heavy metals sank to the centre while the Earth was cooling. The mantle which lies above the core is made of molten rock.

Why do outer and inner core differ in their states of matter?

Answer 1: Earth´s inner core and outer core are both made of an iron-nickel alloy. The state of matter (solid liquid or gas) of a given material depends on its temperature and pressure. … Although the inner core is very hot it is solid because it is experiencing very high pressure.

What is hotter inner core or outer core?

The inner core is indeed hotter than the outer core. 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.

How do we know the core is solid?

Seismic waves traveling through the earth refract for the same reason that light refracts when entering different substances (e.g. air water). The inner core has a different density from the outer core and this difference in density tells us that it is solid.

What is inner and outer core?

Both the inner and outer cores consist primarily of iron and nickel. They’re extremely hot with temperatures ranging from 7200–9000℉ (4000–5000℃). The inner core is under intense pressure which keeps it solid despite high temperatures. Outer Core: The outer core which is liquid is about 1300 miles (2092 km) thick.

Which part of the Earth is solid?


The lithosphere is the solid outer part of the Earth including the brittle upper portion of the mantle and the crust.

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What is outer core short answer?

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.

What does outer core consist of?

The solid inner core of iron has a radius of about 760 miles (about 1 220 km) according to NASA. It is surrounded by a liquid outer core composed of a nickel-iron alloy. The outer core is about 1 355 miles (2 180 km) thick.

Who discovered the outer core?

The discovery that the core of the Earth contains a solid inner core surrounded by a liquid outer core was made by seismologist Inge Lehmann who was studying how seismic waves bounce off the interior of the Earth.

Is the Earth liquid?

The Earth’s interior is composed of four layers three solid and one liquid—not magma but molten metal nearly as hot as the surface of the sun. The deepest layer is a solid iron ball about 1 500 miles (2 400 kilometers) in diameter. … It too is composed mostly of iron plus substantial amounts of sulfur and nickel.

Is the mantle solid?

The mantle is the mostly-solid bulk of Earth’s interior. The mantle lies between Earth’s dense super-heated core and its thin outer layer the crust. The mantle is about 2 900 kilometers (1 802 miles) thick and makes up a whopping 84% of Earth’s total volume.

Is the Earth one solid piece of rock?

​​The earth is made up of three different layers: the crust the mantle and the core. This is the outside layer of the earth and is made of solid rock mostly basalt and granite. … Oceanic crust is denser and thinner and mainly com​posed of basalt. Continental crust is less dense thicker and mainly composed of granite.

Can we drill to the center of the Earth?

It’s the thinnest of three main layers yet humans have never drilled all the way through it. Then the mantle makes up a whopping 84% of the planet’s volume. At the inner core you’d have to drill through solid iron. This would be especially difficult because there’s near-zero gravity at the core.

How far have we drilled into the earth?

Humans have drilled over 12 kilometers (7.67 miles) in the Sakhalin-I. In terms of depth below the surface the Kola Superdeep Borehole SG-3 retains the world record at 12 262 metres (40 230 ft) in 1989 and still is the deepest artificial point on Earth.

Is the Earth’s core gas?

Earth’s inner core is the innermost geologic layer of the planet Earth. It is primarily a solid ball with a radius of about 1 220 km (760 mi) which is about 20% of Earth’s radius or 70% of the Moon’s radius.

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How old is the outer core?

Earth’s core was formed very early in our planet’s 4.5 billion-year history within the first 200 million years.

What is known as core?

core. [ kôr ] The central or innermost portion of the Earth lying below the mantle and probably consisting of iron and nickel. It is divided into a liquid outer core which begins at a depth of 2 898 km (1 800 mi) and a solid inner core which begins at a depth of 4 983 km (3 090 mi).

Why are cores made of metal?

The iron-nickel alloy that composes the inner core is heavier than other elements in the mantle and outer core causing it to sink to the center of earth. B. Since both iron and nickel and attracted to magnets earth’s magnetic field drew the to metals into the inner core mixing them into the alloy.

What is the outer core quizlet?

What is the outer core? A thick layer composed of nickel and iron that lies above the earth’s inner core and below it’s mantle.

What is the density of the outer core?

between 12.6-13 g/cm3
The density of the inner ‘solid’ core is between 9.9-12.2 g/cm3 and the outer core’s density is between 12.6-13 g/cm3.

What color is the outer core?

Remember what the colors represent: The inner core is yellow. The outer core is red. The mantle is orange and tan.

Is the outer core made of liquid rock?

Inside the earth are four layers of rock and metal. Layer 1. The inner core is a solid metal made up of nickel and iron. … The outer core is a liquid molten (liquid) rock.

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