our changing earth in the chapter what I found a challenging
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Answer:
Our restless Earth is always changing. Tectonic plates drift, the crust quakes, and volcanoes erupt. Air pressure falls, storms form, and precipitation results. Learn how these powerful forces shape our air, land, water, and weather—and constantly transform our planet.
The lithosphere is broken into numerous plates known as the lithospheric plates. These plates move around very slowly. The movement of these plates causes changes on the surface of the earth. The earth movements are divided on the basis of the forces which cause them.
The lithosphere is broken into numerous pieces.
These big pieces are called lithospheric plates. The earth’s crust consists of several large and small, rigid, irregularly shaped plates/pieces. The movement of these plates causes changes on the surface of the earth.
The lithospheric plates move slowly because of the slow movement of molten magma inside the earth in a circular manner.
The earth’s movements are divided on the basis of the forces which cause them.
The forces which act in the interior of the earth are called endogenic forces.
The forces that work on the surface of the earth are called exogenic forces.
Endogenic forces sometimes produce sudden movements.
At other times they produce slow movements.
Sudden movements are earthquakes and volcanoes.
They cause mass destruction over the surface of the earth.
Explanation:
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Answer:
Answer: The movement of molten magma inside the earth results in the movement of plates.
(ii) What are exogenic and endogenic forces?
Answer: The movement of the Earth is divided on the basis of the forces, which cause them. So, 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) What is erosion?
Answer: 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) How are flood plains formed?
Answer: 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.