Interior of Earth - Class 7 Social Science - Chapter 10 - Notes, NCERT Solutions & Extra Questions
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Back Questions - Interior of Earth | Social Science Success | Social Science | Class 7
Rocks formed from the solidification of molten magma are :
(a) Igneous rocks
(b) Sedimentary rocks
(c) Stratified rocks
(d) Metamorphic rocks
Igneous rocks
The main elements of the continental crust are :
(a) Silicon and Aluminium
(b) Silicon and Magnesium
(c) Mixed metals and Silicates
(d) Nickel and Iron
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The zone which accounts for the Earth's magnetism is :
(a) Crust
(b) Sima
(c) Mantle
(d) Core
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After metamorphism limestone changes into :
(a) Gneiss
(b) Quartzite
(c) Marble
(d) Slate
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It is impossible to reach the centre of the Earth because the core is:
(a) Extremely cold
(b) Extremely hot
(c) Very deep
(d) Molten
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____________________ is the study of seismic or earthquake waves as measured by seismographs.
(a) Geology
(b) Seismology
(c) Meteorology
(d) Oceanography
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The radius of the earth is:
(a) $6000 \mathrm{~km}$
(b) $6300 \mathrm{~km}$
(c) $6371 \mathrm{~km}$
(d) $6400 \mathrm{~km}$
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The uppermost outer, solid layer of the Earth is also termed as:
(a) Lithosphere
(b) Core
(c) Mantle
(d) None of these
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The innermost layer of the earth is:
(a) Mantle
(b) Sima
(c) Crust
(d) Core
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Rocks which contain fossils are called:
(a) Metamorphic rocks
(b) Igneous rocks
(c) Core
(d) Sedimentary rock
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Match the following
Column A | Column B |
---|---|
1. The innermost layer of the Earth | (a) Seismology |
2. Molten rocks inside the Earth | (b) Fossil |
3. Study of earthquake waves | (c) Core |
4. Plants and animals of the past preserved in sedimentary rocks | (d) Rock cycle |
5. Recycling and conversion of rocks | (e) Sediments |
6. Fine, broken, rock fragments | (f) Magma |
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Approximately, what is the temperature of the interior centre of the earth?
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What are the main elements of 'Sima'?
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What type of rocks are formed by the solidification of molten magma?
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Name the most common Plutonic rock.
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Which type of rocks are formed by large deposits of plants and animals.
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Which rocks are called Primary Rocks? Why?
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How are sedimentary rocks important to us?
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How are metamorphic rocks formed?
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Give two characteristics of the uppermost outer solid layer of the earth.
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Why the thickness of the earth's crust varies widely between continental masses and the ocean floor?
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What is Mantle? Give the characteristics of Mantle.
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Distinguish between metamorphic rocks and igneous rocks.
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"Rock cycle represents the continuous recycling of rock materials and their conversion into different rock types." How it is beneficial to us?
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With the help of diagram explain the formation of extrusive igneous rocks.
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Read the passage given below and answer the questions that follow.
One rock changes into another under certain conditions in a cyclic manner. Molten magma cools down and solidify to form igneous rocks. These rocks are broken down due to pressure and climatic conditions into sediments. These are transported and deposited to form sedimentary rocks. The igneous and sedimentary rocks under heat and pressure change into metamorphic rocks. These metamorphic rocks under great heat and pressure melt down to form molten magma. This again cools down to form igneous rocks.
1. Which process is discussed above?
(a) Rock cycle
(b) Water cycle
(c) Food cycle
(d) None of these
2. Which of the following processes in the rock cycle involves water?
(a) Cementation
(b) Erosion
(c) Weathering
(d) All of above
3. Which rock changes into metamorphic rock under pressure?
(a) Igneous
(b) Sedimentary
(c) Both (a) and (b)
(d) None of these
4. Molten magma cools down and solidify to form which rocks?
(a) Metamorphic rock
(b) Igneous rock
(c) Sedimentary rock
(d) None of these
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Write the names of the different interior layers of the Earth along with their properties. (120 words)
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Notes - Interior of Earth | Class 7 Social Science Success | Social Science
Understanding the Interior of Earth: Class 7 Comprehensive Notes
Have you ever wondered what lies beneath the Earth's surface? This article delves into the fascinating realm of Earth's interior, unveiling various layers and the materials that constitute it.
What Lies Beneath the Earth's Surface?
The Earth's surface may appear cool and solid, but its interior is incredibly hot, with temperatures soaring upwards of 5000°C. This extreme heat prevents direct exploration, so our understanding is based on seismology—the study of seismic waves generated by earthquakes.
Challenges in Studying the Earth's Interior Directly
Due to the intense heat, direct...
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