Major Spheres of the Earth - SS1 Geography Lesson Note
- Atmosphere: The atmosphere is the layer of gases that surrounds the Earth. It consists of various gases, primarily nitrogen and oxygen. The atmosphere plays a crucial role in protecting life on Earth by absorbing harmful solar radiation and regulating the planet's temperature.
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- Biosphere: The biosphere encompasses all living organisms on Earth, including plants, animals, and microorganisms. It's the zone where life exists, from deep ocean ecosystems to the highest mountain peaks. Life in the biosphere interacts with other spheres, such as the atmosphere and the geosphere.
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- Hydrosphere: The hydrosphere includes all the water on Earth, whether in the form of oceans, rivers, lakes, glaciers, or groundwater. Water is essential for sustaining life and plays a vital role in shaping the Earth's surface through erosion and deposition.
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- Geosphere: The geosphere refers to the solid part of the Earth, including the crust, mantle, and core. It's where you find rocks, minerals, and the Earth's interior structure. The geosphere influences landforms, geological processes, and the Earth's overall structure.