(i) The movement of molten magma inside the earth results in the movement of plates.
(ii) The movement of the Earth is divided on the basis of the forces which cause them. The forces that act in the interior of the earth are called endogenic forces, and the forces that work on the surface of the earth are called exogenic forces.
(iii) Erosion is defined as the wearing away of the landscape by different agents like water, wind and ice. The process of erosion and deposition creates different land-forms on the surface of the earth.
(iv) When a river overflows its banks, it results in the flooding of the area surrounding it. When it floods, it deposits a layer of fine soil and other material called sediments, thus forming a fertile layer of soil called flood plains.
(v) When the wind blows, it lifts and transports sand from one place to another. When the wind stops blowing, the sand falls and gets deposited in the low hill-like structures. These are called sand dunes. They are mostly found in desert areas.
(vi) The sea waves deposit sediments along the seashores. This results in the formation of beaches.
(vii) The sea waves deposit sediments along the seashores. This results in the formation of beaches.