Inside our Earth Class 7 MCQs Questions with Answers
Question 1.
Where is the deepest mine in the world located?
(a) South America
(b) South Africa
(c) South India
(d) South Australia
Question 2.
The depth of the deepest mine in South Africa is
(a) one km
(b) two km
(c) three km
(d) four km
Question 3.
The upper most layer of the earthΓ’€™s surface is called
(a) the crust
(b) the brust
(c) the roads
(d) the forest
Question 4.
What is the radius of the earth?
(a) 3671 km
(b) 7163 km
(c) 6371 km
(d) 1736 km
Question 5.
Any natural mass of mineral matter that makes up the earthΓ’€™s crust is called a
(a) rock
(b) road
(c) sediment
(d) none of these
Question 6.
The sediments are transported and deposited by
(a) wind
(b) water
(c) wind and water
(d) none of these
Question 7.
The process of transformation of the rock from one form to another is known as
(a) road cycle
(b) food cycle
(c) rock cycle
(d) all of these
Question 8.
Which rock is the molten magma made up of?
(a) Igneous
(b) Metamorphic
(c) Sedimentary
(d) None of these
Question 9.
What is the latin term of Igneous?
(a) Ignis
(b) Sedimentum
(c) Metamorphose
(d) None of these
Question 10.
Rocks which contain fossils are called
(a) metamorphic rocks
(b) igneous rocks
(c) core
(d) sedimentary rocks
Match the contents of Column A with that of Column B.
| Column A | Column B |
| 1. Sial | (a) Extrusive igneous rocks |
| 2. Sima | (b) Intrusive igneous rocks |
| 3. Nife | (c) Metamorphic rocks |
| 4. Basalt | (d) Silica and Alumina |
| 5. Granite | (e) Silica and Magnesium |
| 6. Slate and Marble | (f) Nickel and Ferrous |
Fill in the blanks with appropriate words:
1. Lava is the molten magma from ……….. of the earthΓ’€™s surface.
2. Like a …………. the earth is made up of …………. layers.
3. Crust is about ………….. km on the continental mass and ………….. km on the ocean floor.
4. The mantle makes up _______ % of the Earth by volume.
5. Core has a radius of about ………….. km and has very high temperature and ………..
6. Limestone under excessive heat and pressure changes into ………….
State whether the given statements are true or false:
1. Crust is the thickest of all the layers.
2. Core is the innermost layer of the earth.
3. Mantle extends up to the depth of 2900 km.
4. The loose sediments are hardened to form metamorphic rocks.
5. Deccan plateau is made up of basalt.
6. Fossils are remains of dead plants and animals.
Question 1.
The Deccan plateau is made up of:
(a) Clay
(b) Granite
(c) Basalt
(d) None of the above
Question 2.
The depth of deepest mine in South Africa is about:
(a) 3km
(b) 4km
(c) 5 km
(d) 6 km
Question 3.
The innermost layer is the core is made of:
(a) Nickel and Iron
(b) Silica and Alumina
(c) Silica and magnesium
(d) a and b both
Question 4.
What is meaning of igneous?
(a) Air
(b) Water
(c) Lime
(d) Fire
Question 5.
The radius of the earth is:
(a) 6000 km
(b) 6300 km
(c) 6371 km
(d) 6400 km
Question 6.
Igneous and sedimentary rocks can change into:
(a) Intrusive igneous rocks
(b) Extrusive igneous rocks
(c) Metamorphic rocks
(d) Igneous rocks
Question 7.
Depth of mantle layer of the earth is:
(a) 2900 km
(b) 3000 km
(c) 3100km
(d) 3200 km
Question 8.
In search for oil engineers have dug a hole about:
(a) 3km
(b) 4km
(c) 5 km
(d) 6 km
Question 9.
Igneous rocks are made when:
(a) The solid magma melts and it becomes solid
(b) The cool magma molten, it becomes solid
(c) The molten magma cools, it becomes solid
(d) Solid magma molten, it becomes solid
Question 10.
Igneous rocks are called primary rocks because:
(Γ°) All the other rocks are formed from the igneous rocks.
(b) These are important for human beings.
(c) These rocks produce all the ailments.
(d) None of the above.
Question 11.
Gold, Petroleum and Coal are the examples of what?
(a) Rock
(b) Fossils
(c) Minerals
(d) Core
Question 12.
What is the Radius of the earth?
(a) 2600 km
(b) 3671km
(c) 7163 km
(d) 6371 km
Question 13.
What is the Innermost layer of the earth?
(a) Crust
(b) Mantle
(c) Core
(d) None of these
Question 14.
Which rocks are known as primary rocks?
(a) Igneous rocks
(b) Sedimentary rocks
(c) Metamorphic rocks
(d) None of these
Question 15.
Where is the deepest mine in the world located?
(a) South America
(b) South Africa
(c) South Australia
(d) South India
Question 16.
What is the percentage of the volume of the earth?
(a) 1
(b) 15
(c) 89
(d) 20
Question 17.
What are the uses of rocks?
(a) Building materials
(b) As a source of metals
(c) Both a and b
(d) None of these
Question 18.
Why earth is called a dynamic planet?
(a) Continuously undergoes changes
(b) Never change
(c) Is very large in size
(d) None of these
Question 19.
What is a rock?
(a) Natural mass of mineral
(b) Artificial mass
(c) Both a and b
(d) None of these
Question 20.
What are the layers of the earth?
(a) Crust
(b) Mantle
(c) Core
(d) All of the above
Match the following
1.
| Column I | Column II |
| 1. Slate | (a) Seven stones |
| 2. Sandstone | (b) Granite |
| 3. Pitthoo | (c) Metamorphic rock |
| 4. Grinding stone | (d) Changes into slate |
Fill in the blanks
1. Gold, petroleum and coal are examples of ……………. .
2. The Crust layer of the earth is ……………. .
3. Red Fort is made of red ……………. .
4. The Taj Mahal is made of white ……………. .
5. The remains of the dead plants and animals trapped in the layers of rocks are called ……………. .
6. The crust forms only ……………. % of the volume of the earth.
7. The deepest mine in the world is in the ……………. .
8. The main mineral constituents of the continental mass are ……………. and ……………. .
9. The innermost layer is the core with a radius of about ……………. km.
10. Igneous rocks also called ……………. .
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