NCERT Class 7 Geography — Chapter 1: Inside Our Earth

Which of the following statements best describes 'Primary Rocks'?

What happens to molten magma when it cools deep inside the Earth's crust?

What is the approximate radius of the Earth?

Consider the following statements: 1. The Earth is a dynamic planet. 2. It is a static planet with no internal or external changes. Which of the statements given above is/are correct?

With reference to Intrusive Igneous Rocks, consider the following statements: 1. They are formed when molten lava cools on the surface. 2. They cool down slowly and form large grains. 3. Granite is an example of an intrusive igneous rock. Which of the statements given above is/are correct?

Which of the following statements is correct regarding the formation of Sedimentary rocks?

What is the general term for any natural mass of mineral matter that constitutes the Earth's crust?

Consider the following statements regarding the transformation of rocks: 1. Igneous rocks cannot change into sedimentary rocks. 2. Sedimentary rocks can change into metamorphic rocks. 3. Metamorphic rocks cannot melt. Which of the statements given above is/are correct?

Which of the following pairs is correctly matched regarding the transformation of rocks?

The Deccan plateau is primarily made up of which type of rock?

The process of transformation of the rock from one to another in a cyclic manner is known as:

With reference to the Earth's composition, 'Sima' stands for:

Which of the following statements about the Earth's crust is FALSE?

With reference to the composition of the Earth’s crust, the term ‘Sial’ refers to which of the following combinations?

The oceanic crust mainly consists of which of the following mineral constituents?

What happens to metamorphic rocks when they are subjected to great heat and pressure?

What are the two main mineral constituents of the Continental Crust?

Deep drilling projects reaching depths of around 6 km are primarily undertaken in search of:

Consider the following statements regarding Sedimentary Rocks: 1. They are formed by the cooling of molten magma. 2. They may contain fossils of plants, animals, and micro-organisms. 3. Sandstone is an example of a sedimentary rock. Which of the statements given above is/are correct?

What is the approximate radius of the Earth's core?

Consider the following statements about the Earth's Mantle: 1. It extends up to a depth of 2900 km below the crust. 2. It is the innermost layer of the Earth. 3. It lies just beneath the crust. Which of the statements given above is/are correct?

Limestone changes into which rock under heat and pressure?

Consider the following statements about Extrusive Igneous Rocks: 1. They are formed when molten lava comes on the Earth's surface. 2. They have a very large-grained structure due to slow cooling. 3. Granite is an example of an extrusive igneous rock. Which of the statements given above is/are correct?

Which rock type is also known as 'Primary Rock'?

Which of the following correctly represents the volume composition of the Earth’s layers?

Consider the following statements regarding the interior of the Earth: 1. The crust is the thickest layer of the Earth. 2. The oceanic crust is thinner than the continental crust. 3. The mantle extends up to a depth of only 100 km. Which of the statements given above is/are correct?

Consider the following pairs regarding rock types and their word origins: 1. Igneous : Latin word meaning 'fire' 2. Sedimentary : Latin word meaning 'settle down' 3. Metamorphic : Greek word meaning 'change of form' 4. Fossils : Latin word meaning 'hard rock' How many of the above pairs are correctly matched?

Which of the following rocks is formed by the compression and hardening of loose sediments?

Consider the following statements regarding fossils: 1. They are the remains of dead plants and animals trapped in the layers of rocks. 2. They are most commonly found in Igneous rocks. Which of the statements given above is/are correct?

Match List I with List II and select the correct answer using the code given below: List I (Layer) | List II (Characteristic) A. Crust | 1. Extends up to 2900 km depth B. Mantle | 2. Silica and Alumina C. Core | 3. Thinnest layer D. SIAL | 4. Made of nickel and iron

In which country is the world's deepest mine located?

Grinding stones used to prepare paste or powder of spices and grains are typically made of which rock?

What is the approximate depth of the deepest mine in the world?

Consider the following statements regarding the rock cycle: 1. Igneous rocks cannot be broken down into sediments. 2. Igneous and sedimentary rocks change into metamorphic rocks under heat and pressure. 3. Metamorphic rocks can melt to form molten magma. Which of the statements given above is/are correct?

The term 'Igneous' is derived from the Latin word 'Ignis' which means:

Clay changes into which rock under heat and pressure?

Which of the following is the correct sequence of layers from the surface to the centre of the Earth?

The continental mass mainly consists of:

Which of the following is a characteristic of Extrusive Igneous Rocks?

Which of the following is a characteristic of Intrusive Igneous Rocks?

What are the two main mineral constituents of the Oceanic Crust?

Consider the following statements regarding the Earth's crust: 1. It is a single solid block without any layers. 2. The continental crust is composed mainly of silica and alumina. 3. The oceanic crust is thicker than the continental crust. Which of the statements given above is/are correct?

Which layer of the Earth is referred to as 'Nife'?

Match List I with List II and select the correct answer using the code given below: List I (Rock) | List II (Category) A. Basalt | 1. Metamorphic B. Granite | 2. Intrusive Igneous C. Sandstone | 3. Extrusive Igneous D. Marble | 4. Sedimentary

Consider the following statements regarding the Earth's core: 1. It is the innermost layer with a radius of about 3500 km. 2. It is mainly composed of silica and magnesium. 3. It has very high temperature and pressure. Which of the statements given above is/are correct?

Which of the following is NOT typically considered a primary use of hard rocks in construction?

What is the main reason for the fine-grained structure of extrusive igneous rocks?

The fragmentation of rocks into smaller particles due to mechanical processes is known to produce:

What is the main reason for the formation of large grains in intrusive igneous rocks?

Minerals are naturally occurring substances which have: 1. Certain physical properties 2. They have no definite chemical composition. 3. They are naturally occurring substances. Select the correct answer using the code given below:

Which of the following statements is correct regarding the thickness of the Earth's crust?

Rocks formed by the rapid cooling and solidification of molten lava on the Earth's surface are known as: