Magmatism refers to the positioning of magma on the outer surface and within the layers of a terrestrial planet which on cooling solidifies into igneous rocks.
Mechanical weathering is the process of breaking of big rocks into tiny or smaller pieces. It is basically a process of conversion of big rocks into sediments thus leading to the formation of soil.
Chemical Weathering is the process of breaking down of big rocks into tiny pieces by chemical reactions instead of mechanical processes.
Erosion is the process of removal of soil, sediments and dissolved substance from one location and transporting it to another location on earth crust.
Metamorphism is the process of change in the structure or com[position of a rock by the action of pressure, temperature or other natural forces.
Aurora, luminous phenomenon of Earth's upper atmosphere that occurs primarily in high latitudes of both hemispheres; auroras in the Northern Hemisphere are called aurora borealis, aurora polaris, or northern lights, and in the Southern Hemisphere aurora australis, or southern lights.
