Define four spheres of the earth.
Answers
Answer:
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Answer:
Everything in Earth's system can be placed into one of four major subsystems: land, water, living things, or air. These four subsystems are called "spheres." Specifically, they are the "lithosphere" (land), "hydrosphere" (water), "biosphere" (living things), and "atmosphere" (air).
Explanation:
The Geosphere / Lithosphere
Geosphere includes all the elements that form the crust and core of the Earth. Rocks and sand particles ranging from drylands to those found at the bottom of the ocean are examples of the geosphere. Examples also involve minerals, lava, molten magma and mountains. The geosphere undergoes constant processes that modify other spheres. One of the examples is the rock cycle.
The Hydrosphere
The hydrosphere includes all the water parts of the planet. It includes water on the surface, subsurface and water vapour in the atmosphere. It undergoes infinite processes every day. The water cycle is one way to understand what is the importance of hydrosphere, its functions and how it supports other spheres.
The Biosphere
Biosphere comprises all the living components of the Earth. It also includes organic matter that has not yet decayed. The sphere hugely depends on the other three spheres as follows:
The hydrosphere replenishes plants and animals with water and moisture.
The geosphere renders a solid surface for the plants and animals to inhabit. It also provides heat from beneath the earth.
The atmosphere screens the sun’s UV radiation and helps us receive just enough of the sun’s heat.
A theory known as the ecosystem better explains the interaction of the biosphere with the other spheres.
The Atmosphere
Different layers of the atmosphere
The gaseous component above the surface of the Earth is known as the atmosphere. It is made of gaseous components and tiny water particles. The gases in the atmosphere are kept in place by the force of gravity. The heat from the sun is radiated to the Earth and is reflected in the atmosphere. The heat from the sun warms up the surface of the earth and causes evaporation, thereby sending moisture into the atmosphere.