Class 7 Geography Chapter 2 Question Answers - Inside Our Earth

Q.1: Our earth is constantly undergoing changes inside and outside.( T/F)

Ans: True

Q.2: The uppermost layer of the earth surface is called the…………….

Ans: Crust

Q.3: The oceanic crust mainly consists of ………………and …………….

Ans: Silica and Magnesium

Oceanic Crust

Q.4: Any natural mass of mineral matter that makes up the earth’s crust is called……………….

Ans: Rock

Q.5: All rocks are made up of the same minerals. (T/F)

Ans: False

Q.6: The radius of the earth is……………km.

Ans: 6371

Q.7: The deepest mine of the world is in which country.

Ans: South Africa

Q.8: The upper crust is made up of minerals like silicon and aluminium while lower constitutes silicon and magnesium. (T/F)

Ans: True

Q.9: Basalt is the example of which of the following rocks-
​a. Igneous
​b. Sedimentary
​c. Metamorphic
​d. primary
​Ans: Igneous

Basalt

Q.10: Deccan plateau is made up of …………………rocks.

Ans:   Basalt

Q.11: Is the earth a dynamic planet?

Ans: Yes

Q.12: Where is the deepest mine in the world located?
Ans: In South Africa, about 4 km deep.

Q.13: Due to intense heat and pressure, the granite rocks change into
​a. Schist
​b. Slate
​c. Marble
​d. Gneiss
​Ans: Gneiss

Q.14: Which of the following is not the transform form of rocks?
​a. Slate
​b. Q.uartzite
​c. Marble
​d. Sandstone
​Ans: Sandstone

Sandstone

Q.15: Sedimentary Latin word sedimentum meaning………………….

Ans: Settle down

Q.16: Igneous rocks form when molten magma cools and solidifies.(T/F) 

Ans: True 

Q.17: The innermost layer is the core with a radius of about…………km.

Ans: 3500 km

Q.18: Coal, gold, and petroleum are examples of-
​a. Rocks
​b. Fossil
​c. Minerals
​d. Sand
​Ans: Mineral

Q.19: Define the rock cycle?

Ans: The process of transformation of the rock from one to another is known as the rock cycle.

Gneiss

Q.20: Core is made up of………… and …………….

Ans: Nickel, iron