While the Proto-Earth was probably a clump of chaotically mixed cosmic dust and gases, this is not what we know it to be today. Studies of seismic waves have revealed two important types of layering in the Earth: chemical and physical. Most of the weather occurs in the first layer. Crust. Layers of the Earth's Atmosphere. A new analysis of the chemical make-up of meteorites has helped scientists work out when the Earth formed its layers. Earth's Core. Compositional layering refers to layers of different composition. 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. The troposphere is the first layer above the surface and contains half of the Earth's atmosphere. The layers are the crust, mantle, inner core and outer core. Chapter 3: The Earth: Differentiation & Plate Tectonics. It is thickest near the surface and thins out with height until it eventually merges with space. The Earth comprises of four separate layers. The layers of Earth diagram. Well, Earth is the same way! At our current state of knowledge we view the Earth as consisting of a number of superimposed layers/shells that differ in composition and properties. Physical layering refers to layers of different mechanical properties, such as rigid layers verses "plastic" or fluid layers. You mean like, the atmosphere, crust, mantle and core right? The Earth is composed of four different layers. Because of this, the crust is made of the lightest materials (rock- basalts and … 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. Weather occurs in this layer. You may have heard that ogres are like onions because they have many layers. The research by an international team of scientists confirmed the Earth’s first crust had formed around 4.5 billion years ago. The atmosphere is divided into five layers. Many geologists believe that as the Earth cooled the heavier, denser materials sank to the center and the lighter materials rose to the top.

The Earth's crust is an extremely thin layer of rock that makes up the outermost solid shell of our planet. Earth's inner core is the innermost geologic layer of the Earth.It is primarily a solid ball with a radius of about 1,220 kilometres (760 miles), which is about 20% of the Earth's radius or 70% of the Moon's radius.. 1. 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.