What is the meaning of outer core of the Earth?
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 is the outer core kid definition?
The outer core is the outer layer of the core that is made of liquid iron and nickel. Since it is a liquid, the outer core can spin, and it does. This spinning causes the entire planet to be magnetic (think of a refrigerator magnet).
Where is the outer core?
The Earth's outer core is the second innermost layer, located between the inner core and the mantle. It contains mostly iron and nickel, which- due to lower pressure than existing at the inner core- are in the liquid form.
What is the definition of inner core of the Earth?
Earth's inner core is the innermost geologic layer of 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.
What is the definition of outer core in Science?
Outer-core definition (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.
What is outer core and inner 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.
What is the outer mantle?
The uppermost part of the mantle near the crust is hard and brittle. This layer and the Earth's crust are known as the lithosphere, while the rest of the upper mantle below is called the asthenosphere. The rock here is malleable but still solid. It is said to be plastic.
What are 3 facts about the outer core?
Planet Earth
- Temperature. The Outer Core is about 4000-5000 degrees Celsius. The Inner Core is so hot it causes all the metal in the Outer Core to melt into liquid magma.
- Thickness. The Outer Core is about 2200 km thick. …
- Magnetism. Because the outer core moves around the inner core, Earth's magnetism is created.
What are 5 facts about the outer core?
Planet Earth
- Temperature. The Outer Core is about 4000-5000 degrees Celsius. The Inner Core is so hot it causes all the metal in the Outer Core to melt into liquid magma.
- Thickness. The Outer Core is about 2200 km thick. …
- Magnetism. Because the outer core moves around the inner core, Earth's magnetism is created.
What is called mantle?
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.
What is the characteristic of outer core?
The outer core is made of mostly nickel and iron. It is always at high temperatures ranging from 4,500 degrees Celsius to 6,000 degrees Celsius. The hottest part of the outer core is approximately the same temperature as the sun. The outer core creates Earth's magnetic field, which protects all life on Earth.
What is the outer core made of?
Earth's outer core is a fluid layer about 2,260 km (1,400 mi) thick, composed of mostly iron and nickel that lies above Earth's solid inner core and below its mantle.