state any four characteristics of the interior structure of the earth
Answers
You mean like, the atmosphere, crust, mantle and core right? If so then:
The atmosphere is well, the air of Earth (and some other planets) and is made of 78% nitrogen, 21% oxygen and 1% of a mix of others. It is the standard base of measurement of atmopsheric density/pressure on varying altitudes and other planets.
The crust is a solid rock that floats above the liquid mantle (We'll get to that). It is made up of large tectonic plates that seprate or impact one another, creating trenches and mountains. Oh, and earthquakes. Everything that is basically "on Earth" is on the crust. They move at 2.5 centimeters a year, same speeds as your nails (Nail clippers are a thing, btw). It varies in thickness from 5km to 70+ km, being the thinnest under oceans and thickest under large landmasss or mountains. The Mohrovic Discontinuity is the boundary between the crust and mantle and where one ends, and the other begins. As you dig down throughthe crust, the temperature increases by 20-25 Celsius per kilometer. As a side note, the Kola Superdeep Borehole is more than 12.6km deep and had a temperature of moe than 200 Celsius. The heat prevented further digging as the equipment would overheat and become damaged. The deepest humans have actually walked on (And still do) are in the deep mines of South Africa, a good bit of them in and around the Gauteng Province. The deepest of them (and in the world) is 3.9 km underground. It is also 60 Celsius inder there and huge cooling units have to be built to force the temperature down to around 30 Celsius (Which is still hot AF. Summer. Probably rain. Cockroaches EVERYWHERE.)
The mantle is a large layer of liquid rock 2,900km in size. Convection currents move the molten rock and material around (And that's where volcanoes obtain their characteristic red-hot, molten flowing rock). Pressures here are immense. Diamonds form here and are brought up to the surface by said convections. This is what also makes the continental plates move. And also the plate collisions that cause earthquakes. Temperature varies from 500 Celsius to 4,000 Celsius once you get to the core (Hypothetically). A few projects have taken place to dig into the mantle, such as Project Mohole and the Kola Superdeep Borehole. Tectonics and currents also are responsible for geothermal energy.
Then there's the other core. It is a 2,300 kilometer liquid ocean of iron and cobalt. Convection currents exist here too as in the mantle, though more frequent. It is up to 5,700 Celsius in temperature. The outer core's currents are also responsible for Earth's magnetosphere, which actually makes this planet suitable for life and not everything scraped clean by solar winds and cancer everywhere like Big Pharma's wet dream.
Ultimately there's the inner core. It's a dense, hot solid ball of iron and nickel. At least 5,400+ Celsius, it is hotter than the surface of the Sun and well, our gravity. Oh, and it is also super dense and has a high pressure. It is also said that the inner core of Earth contains many precious metals (Such as platinum). The pressure at the core is more than 3 million atmospheres and if you went down there, you would be instantaneously crushed into a diamond.
And then there's all of this in reverse. Oh, and China. And the atmosphere