Question

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Answer 1

Answer:

1.Sudden movements like earthquakes and volcanoes cause mass destruction over the surface of the earth. Exogenic forces: The forces that work on the surface of the earth are called Exogenic forces. Volcano: A volcano is a vent in the earth's crust through which molten material erupts suddenly.

2.A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. Earth's volcanoes occur because its crust is broken into 17 major, rigid tectonic plates that float on a hotter, softer layer in its mantle.

3.The epicenter, epicentre or epicentrum in seismology is the point on the Earth's surface directly above a hypocenter or focus, the point where an earthquake or an underground explosion originates.

4.Normally prediction is of three types viz. ... Scientists believe that it is possible to predict major earthquakes by monitoring the seismicity caused by natural earthquakes, mining blasts, nuclear tests, etc. However, no flawless technique has been developed to predict the earthquakes till date.

5.Weathering is the breakdown of rocks at the Earth's surface, by the action of rainwater, extremes of temperature, and biological activity. It does not involve the removal of rock material.

In earth science, erosion is the action of surface processes that removes soil, rock, or dissolved material from one location on the Earth's crust, and then transports it to another location.

Explanation:

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Answer 2

Explanation:

(Q1)

Ans: Volcanoes and Earthquakes cause mass destruction over the surface of the earth.

(Q2)

Ans: A volcano is an opening in the earth's crust through which lava, volcanic ash, and gases escape.

(Q3)

Ans: Epicentre is the point where an earthquake originates or where an underground explosion originates.

(Q4)

Ans: Reptiles, fishes, birds, animals exhibit strange behavior anywhere from weeks to seconds before an earthquake. This is one of the methods used in the prediction of earthquakes.

(Q5)

Ans:

1]Erosion happens when rocks and sediments are picked up and moved to another place by ice, water, wind, or gravity.

2]Mechanical weathering physically breaks up the rock. One example is called frost action or frost shattering. Water gets into cracks and joints in bedrock.