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The Earth has become so perfect for living organisms because of its interacting physical, chemical and biological processes called Earth system. The Earth system is a set of all matter both living and non-living, energy, and processes within Earth’s boundary. It is powered by energy from two major sources: the sun and the planet’s internal heat. This enables numerous processes and cycles to take place. Scientists break down Earth’s major system into four subsystems (also called spheres) such as, the lithosphere/geosphere (land), hydrosphere (water), biosphere (life), and atmosphere (air). These subsystems work together to influence the climate, trigger geological processes, affect life all over the earth
And being a unique planet, Earth has these different systems which interact to be able to function as a whole. To be able to understand our lesson for this module let's have first our goals:
LESSON OBJECTIVES:
At the end of the module you are expected to:
Explain that the Earth consists of four subsystems, across whose boundaries matter and energy flow. (S11/12ES-Ia-e-4) specifically you should be able to:
1. describe the Earth’s four subsystems; and
2. cite examples of interactions occur between Earth’s subsystems.
Before we learn about t the Earth has four (4) systems such as, BIOSPHERE, HYDROSPHERE, ATMOSPHERE AND LISTHOSPHERE (GEOSPHERE). lets' define each terms.
Earth System is a set of all matter both living and non-living, energy, and processes within Earth’s boundary.
Biosphere is a layer of the Earth where life exists. It came from the word “bios,” which means life.
Atmosphere is the gaseous envelope surrounding the Earth. It came from the word “atmos,” which means air.
Hydrosphere is composed of water surrounding the earth’s surface. It came from the word “hydro,” which means water.
Geosphere is the solid portion of the earth. It came from the word “geo,” which means ground.
Subsystem is a self-contained system within a larger system.
Now that you have the idea of what we will learn for this module let's have this video for you to have a better understanding of the concepts in your modules.
freh.mp4WOW! You are really focus in our discussion for today. And i know that you have already learned about the Earths' subsystems let us have now an activity.
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