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Earth is the third planet from the Sun and the only astronomical object known to harbor life. This is enabled by Earth being an ocean world, the only one in the Solar System sustaining liquid surface water. Almost all of Earth's water is contained in its global ocean, covering 70.8% of Earth's crust.
The Earth is a. planet. and is roughly the shape of a. sphere. There are three layers that make up the Earth’s structure. The three layers, starting from the outside, are: the crust – the ...
- Namesake. The name Earth is at least 1,000 years old. All of the planets, except for Earth, were named after Greek and Roman gods and goddesses. However, the name Earth is a Germanic word, which simply means “the ground.”
- Potential for Life. Earth has a very hospitable temperature and mix of chemicals that have made life abundant here. Most notably, Earth is unique in that most of our planet is covered in liquid water, since the temperature allows liquid water to exist for extended periods of time.
- Size and Distance. With an equatorial diameter of 7926 miles (12,760 kilometers), Earth is the biggest of the terrestrial planets and the fifth largest planet in our solar system.
- Orbit and Rotation. As Earth orbits the Sun, it completes one rotation every 23.9 hours. It takes 365.25 days to complete one trip around the Sun. That extra quarter of a day presents a challenge to our calendar system, which counts one year as 365 days.
2 days ago · Earth, third planet from the Sun and the fifth largest planet in the solar system in terms of size and mass. Its single most outstanding feature is that its near-surface environments are the only places in the universe known to harbor life. Learn more about development and composition of Earth in this article.
- Earth is the third planet from the Sun and the fifth largest planet in the solar system in terms of size and mass. Its near-surface environments ar...
- Earth is located in the Orion-Cygnus Arm, one of the four spiral arms of the Milky Way, which lies about two-thirds of the way from the centre of t...
- Earth’s name in English, the international language of astronomy, derives from Old English and Germanic words for ground and earth, and it is the o...
- Earth and the other planets in the solar system formed about 4.6 billion years ago. The early Earth had no ozone layer and no free oxygen, lacked o...
- Viewed from another planet, Earth would appear bright and bluish in colour. In latitudinal belts, swirling white cloud patterns of midlatitude and...
- Interior of The Earth: Crust, Mantle and CORE
- What Should You Understand About The Interior of The Earth?
- Composition of Earth
- Temperature, Pressure and Density of The Earth’s Interior
- Earth’s Magnetic Field
- References
The Earth’s interior can be divided into three main layers: the crust, the mantle, and the core. These layers have distinct properties and compositions, which play a significant role in shaping our planet’s geology and behavior. 1. Crust: 1.1. The Earth’s crust is the outermost layer and the one we interact with directly. It varies in thickness, wi...
It is not possible to know about the earth’s interior by direct observations because of the huge size and the changing nature of its interior composition.It is an almost impossible distance for the humans to reach till the centre of the earth (The earth’s radius is 6,370 km).Through mining and drilling operations we have been able to observe the earth’s interior directly only up to a depth of few kilometers.The rapid increase in temperature below the earth’s surface is mainly responsible for setting a limit to direct observations inside the earth.Major Elements and Minerals in Earth’s Composition: 1. Oxygen (O):Oxygen is the most abundant element in Earth’s composition, making up approximately 46.6% of the Earth’s crust by weight. It is a crucial component of minerals and compounds, such as silicates and oxides. 2. Silicon (Si):Silicon is the second most abundant element in the Earth’s crus...
Temperature
1. A rise in temperature with increase in depth is observed in mines and deep wells. 2. These evidence along with molten lava erupted from the earth’s interior supports that the temperature increases towards the centre of the earth. 3. The different observations show that the rate of increase of temperature is not uniform from the surface towards the earth’s centre. It is faster at some places and slower at other places. 4. In the beginning, this rate of increase of temperature is at an avera...
Pressure
1. Just like the temperature, the pressure is also increasing from the surface towards the centreof the earth. 2. It is due to the huge weight of the overlying materials like rocks. 3. It is estimated that in the deeper portions, the pressure is tremendously high which will be nearly 3 to 4 million times more than the pressure of the atmosphere at sea level. 4. At high temperature, the materials beneath will melt towards the centre part of the earth but due to heavy pressure, these molten mat...
Density
1. Due to increase in pressure and presence of heavier materials like Nickel and Iron towards the centre, the density of earth’s layers also gets on increasing towards the centre. 2. The average density of the layers gets on increasing from crust to core and it is nearly 14.5g/cm3 at the very centre.
Earth’s magnetic field is a crucial and complex feature that surrounds our planet. It plays a significant role in our daily lives and has several important functions. Here’s an overview of Earth’s magnetic field: 1. Generation of Earth’s Magnetic Field: 1. Earth’s magnetic field is primarily generated by the movement of molten iron and nickel in th...
Jijo Sudarsan,Interior of the Earth: Crust, Mantle and Core(2018),https://www.clearias.com/interior-of-the-earth/
2 days ago · Earth’s Surface & Interior. The Earth’s surface plays a critical role in the Earth system by interacting with the ocean and the atmosphere. To understand the Earth system, scientists must observe how the Earth’s surface changes as a result of interactions between the atmosphere and ocean (coastal erosion, landslides) and how tectonics and ...
Crust and Lithosphere. Mantle. Core. Core, mantle, and crust are divisions based on composition. The crust makes up less than 1 percent of Earth by mass, consisting of oceanic crust and continental crust is often more felsic rock. The mantle is hot and represents about 68 percent of Earth’s mass. Finally, the core is mostly iron metal.
