Question

10. What is the main constituent of the core?
11. What do you know about the lithosphere plates?
12. How does the lithosphere plates move?
13. What is a volcano?
14. Define focus and epicentre​

Answer 1

Answer:

10.iron and nickel

11.Lithospheric plates are regions of Earth's crust and upper mantle that are fractured into plates that move across a deeper plasticine mantle. Each lithospheric plate is composed of a layer of oceanic crust or continental crust superficial to an outer layer of the mantle.

12.Most tectonic activity takes place at the boundaries of these plates, where they may collide, tear apart, or slide against each other. The movement of tectonic plates is made possible by thermal energy (heat) from the mantle part of the lithosphere. Thermal energy makes the rocks of the lithosphere more elastic.

13.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.

14.Focus:-a central point, as of attraction, attention, or activity: The need to prevent a nuclear war became the focus of all diplomatic efforts. Physics. a point at which rays of light, heat, or other radiation meet after being refracted or reflected.

Epicentre:-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.

Answer 2

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10. The main constituents of the core are Nickel and Iron...

11. Lithosphere plates are the regions of Earth's crust and upper mantle that are fractured into plates that move across a deeper plasticine mantle..

12. The lithosphere plates move through the intense heat in Earth's core...

13. A volcano is a vent or narrow opening in the Earth's crust connected by a conduit to an underlying magma chamber...

14. Focus : -

The point inside the crust where the pressure is released is known as the focus..

Epicentre : -

The point on the Earth's surface vertically above the seismic focus is called the epicentre...

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