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Geography

Interior structure of the earth

In Class 11 Geography, this topic from the chapter “Interior of the Earth” explains how scientists understand the planet’s hidden layers. Students study the crust, mantle, and core, along with the differences between the inner and outer core. They explore how seismic waves, gravity, density, temperature, and pressure provide evidence about Earth’s composition and physical state. The topic also introduces major discontinuities that mark boundaries between layers and helps connect Earth’s internal structure with processes such as volcanism, earthquakes, and plate movement.

Easy · Level 3 · 25 questions

Practice questions

01In which direction does the density of materials generally increase inside Earth?

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02Which layer is studied first while reading Earths internal structure?

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03Why are materials inside Earth mainly considered as different layers?

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04Where is the crust generally thinnest?

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05On which layer do humans directly live at Earths surface?

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06What is the general nature of continental crust?

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07What is the general nature of oceanic crust?

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08The mantle lies below what and above what?

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09What is the name of the boundary between crust and mantle?

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10Which discontinuity is linked with the mantle core boundary?

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11What is the boundary between outer core and inner core known as?

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12Which part is considered Earths rigid outer shell?

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13Lithospheric plates move over which plastic layer?

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14Asthenosphere is a part of which major layer of Earth?

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15Earths core is mainly considered to be made of which elements?

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16The term nife is related to which layer of Earth?

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17Which elements are mainly considered in sial?

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18Which elements are mainly considered in sima?

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19Which statement about seismic P waves is correct?

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20Which limitation of seismic S waves is important?

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21What gives a major indication of the liquid state of the outer core?

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22Why is the inner core considered solid despite very high temperature?

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23What is the general trend of temperature inside Earth?

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24What is the general trend of pressure inside Earth?

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25Volcanic material is which source of information about Earths interior?

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