What do the inner and outer core have in common?

The inner core is solid and is 90\% iron, but the outer core is a liquid…and it’s a good thing it is! More on that later. The outer core is made of a mixture of iron and nickel, with smaller amounts of silicon and oxygen.

What is the inner core similar to?

outer core
The inner core is the centermost layer of Earth and is in many ways similar to the outer core. It is also primarily iron and nickel and has a radius of about 1,220 km. The differentiation between the outer core and inner core is density driven.

Are the inner core and outer core the same temperature?

Temperature in the inner core is about 5,200° Celsius (9,392° Fahrenheit). The pressure is nearly 3.6 million atmosphere (atm). The temperature of the inner core is far above the melting point of iron. However, unlike the outer core, the inner core is not liquid or even molten.

What is the principal difference between the inner core and outer core?

What is the principal difference between the inner core and outer core? The inner core is liquid while the outer core is solid.

How do they know that the inner and outer core is made up of iron and nickel?

At the planet’s center lies a dense metallic core. Scientists know that the core is metal because: If the surface layers are less dense than average, then the interior must be denser than average. Calculations indicate that the core is about 85\% iron metal with nickel metal making up much of the remaining 15\%.

What are the inner and outer cores made out of?

Core. At the center of the Earth is the core, which has two parts. 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.

Why is the inner core hotter than the 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.

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.

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

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. The pressure in the outer core is not high enough to make it solid.

What are the differences between the inner and the outer core of Earth quizlet?

Lower mantle is solid. Outer core is liquid. inner core is solid.

Why is the inner core solid but the outer core liquid?

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. Convection currents in the outer core are due to heat from the even hotter inner core.

Why is the inner core made from solid metal while the outer core is made of molten metal?

the inner core makes up only 1\% of the mass of the Earth; the outer core makes up about 32\% of the mass of the Earth. Answer 2: The inner core is solid because it is made of very dense, or heavy, materials – like iron and nickel. Even though it is very hot, these materials don’t “melt” very easily, so they stay solid.