1) Power Endogenous
Endogenous energy is energy released from the earth in the form of hot steam, gas pressure and so forth. Endogenous power leads to changes in the earth because of the effect of thermal power and very powerful earthquake that caused the precipitate was pushed back up into the hills and mountains. Therefore, endogenous Power is often associated with forming force, because with this power countenance earth was formed like structure and volcanic rocks.
2) Power Exogenous
Exogenous energy is energy which comes from outside the earth is often associated with a power of destruction and displacement. The general nature of exogenous energy is remodel the shape of the earth’s surface results from the formation of endogenous power. Exogenous power leads to changes in the earth’s surface due to the influence of water, wind, glaciers and vegetation. At the time of burning ball begins to cool, there was shrinkage consequently mineral materials that is in the earth pushed up forming hills and mountains.
The process of weathering and erosion constantly throughout the ages, hills and mountains swept clean, minerals such as clay mud flowed together into a lower water causing minerals settles in lakes or oceans. Exogenous force is often called the power of destruction and displacement due to this power rock formed by endogenous force ‘destroyed’ by gradation and weathering processes are then transferred to a lower place by exogenous force consisting of rain, wind, glaciers, and plants. Between endogenous and exogenous power occur simultaneously and continuously.
Figure 5. The flow of the glacier, one of the causes of exogenous energy
Granite rock weathering process can be described as in the image below.
Figure 6. The flow of magma
Figure 7. The process of rock weathering granite.