explain the layer of the earth
Answers
Question:
Explain the layer of the earth.
Answer:
The Earth comprises of four separate layers. Most of the geologist believes that as the Earth cooled the heavier, the materials denser sank into the center, and the lighter ones rose towards the top. Due to this, the outermost layer is made of lightest materials such as rocks and granites and the innermost layer consists of nickel and iron. Let’s discuss different layers of earth.
Our Earth consists of four different layers namely:
- Inner core
- Outer core
- Mantle
- Crust
Inner Core:
It is the center and the hottest layer of the Earth. The inner core is solid and made up of iron and nickel with temperature up to 5,500° C. Due to its immense heat energy, the inner core is more like the engine room of the Earth.
Outer Core:
The outer core of the Earth is similar to a very hot ball of metals, whose temperature is around 4000° F to 9000° F. It is so hot that the metals inside are all in the liquid state. The outer core is located around 1800 miles under the crust and approximately 1400 miles thick. It is composed of metals such as iron and nickel. The outer core surrounds the inner core.
The inner core has pressures and temperatures so high that the metals are squeezed together and not able to move like a liquid, but are forced to vibrate instead of solid.
Mantle:
Mantle is the widest section of the Earth. Its thickness is approximately 2,900 km. Mantle is mainly made up of semi-molten rock known as magma. The rock is hard in the upper part of the mantle, but lower down the rock is softer and begins to melt.
The mantle is located directly under the Sima. The mantle consists of very hot and dense rock. This layer of rock flows like asphalt under heavy weight. This flow is because of the greatest temperature differences from the bottom to the top of the mantle. The reason behind the plates of the Earth move is the movement of the mantle. Its temperature varies between 1600° F at the upper part to 4000° F near the bottom.
Crust:
The crust is the outer layer where we live. The thickness is around 0-60 km. It’s a solid rock layer divided into two types:
- Continental crust covers the land and,
- Oceanic crust covers water.
The crust is the most widely studied and understood. Mantle is hotter and capable of flowing. The outer and inner core are much hotter with great pressures that you can be squeezed into a ball smaller than a marble if you are able to go in the center of the Earth.
Hope it helps you........
Answer:
- The three parts of the earth's structure are the core, the mantle, and the crust. This stratum of the earth lies on the surface and is composed primarily of granite and basalt solid rock.
- Oceanic and continental crust are the two types. Basalt makes up the majority of the oceanic crust, which is denser and thinner.
- An illustration of the strata of the Earth is shown as follows: lithosphere, asthenosphere, outer core, inner core, crust, mantle, 3a, 3b, 3c, and asthenosphere.
- Composition-based divisions include the core, mantle, and crust: Less than 1% of Earth's mass is made up of the crust.
- On Earth, the mantle, crust, outer core, and inner core all serve significant functions. Our continents were created as a result of the strata of the Earth.
- The majority of the land mass was united to form a supercontinent known as Pangaea 250 million years ago.