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EARTH AND LIFE SCEICNE 1.4 EARTH'S SUBSYSTEM.pptx
- 1. EARTH’s s u bs y s t e m LESSON 1.4
- 2. 4 SUBSYSTEMS •ATMOSPHERE (air) •GEOSPHERE(earth/land) •HYDROSPHERE (water) •BIOSPHERE (life)
- 3. ATMOSPHERE • It isthe gaseous layer above the earth’s surface , primarily composed of 78% nitrogen, and 21% oxygen. Other gas like argon, carbon dioxide, carbon monoxide , ozone, and other inert gas made the remaining 1% • Supports life by providing oxygen and carbon dioxide for plants • Supports life by indirectly regulating climate • Serves as blanket for harmful radiation during the day and keep the earth warm during the night
- 4. GEOSPHERE •Includes all therocks that make up Earth, from partially melted rock under the crust, to ancient towering mountains , to grains of sand in the beach •It includes the core, the mantle, and the crust of the Earth •Provides habitat for different life forms
- 5. HYDROSPHERE •Includes water thatis on the surface of planet , underground, and in the air •Can be liquid, vapor, or ice •Just like geosphere, it also provides habitat for different lifeforms
- 6. BIOSPHERE •Made up ofthe parts of the earth, where life exist •Extends from the deepest root system of trees, to the dark environment of ocean trenches, to lush rain forest and high mountain tops •Since life exist on land, air, and water, biosphere overlaps all the three spheres
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