Morning Star solutions for टोटल जियोग्राफी [इंग्रजी] इयत्ता ९ आयसीएसई chapter 6 - Rocks [Latest edition]

An aggregate of minerals, with no definite chemical composition, that forms more or less a definite unit of the earth’s crust:

The magma, when forced upwards, fills vertical cracks or fissures in existing rocks, and it then hardens there to form ______.

With reference to Intrusive Igneous Rocks which of the following is incorrect?

The process that turns loose sediments into rocks:

The bonding together of compacted sediments by natural bonding materials such as calcium compounds, silica, and iron:

Transported sediments get deposited in layers, leading to increased pressure and temperature on the lower layers. Select the correct sequence of processes involved in the lithification of these sediments.

Sam was working under a geologist. He lost his balance and dropped the bags containing igneous rocks and sedimentary rocks, and the rocks got mixed. How would he separate them?

Assertion (A): Igneous rocks are called primary rocks.

Reason (R): They were the first to be formed.

The rocks, like peat, lignite, bituminous, and anthracite, are examples of ______.

The following pairs are the types of rocks on the basis of the agents of their formation. Which of the following is incorrect?

The alteration of the composition or structure of a rock by heat, pressure, or other natural agency:

Assertion (A): Igneous rocks are of interest to builders and sculptors.

Reason (R): Igneous rocks are usually compact.

The transformation of rocks into metamorphic rocks takes place as a result of intense heat and pressure. Given below are the types of metamorphism and the processes involved. Which one is incorrect?

Study the diagram and identify A, B, and C.

The continuous process of transformation of old rocks into new ones:

______ are deep-seated intrusion of igneous rocks.

Your sister had gone camping in Uttarakhand. She was fascinated with the smooth striated rocks she had collected. What type of rocks had she brought home with her?

Which of the following is NOT an organically formed rock?

State two points of distinction between rocks and minerals.

Name any three elements of the earth’s crust.

Name three types of rocks.

Give one difference between Extrusive igneous and Intrusive igneous rocks.

Name any two characteristics of Igneous Rocks.

State two characteristics of Basic Igneous Rocks.

Name two important landforms made by Igneous Rocks.

What is sills?

Give an example of Sills.

Which rocks are associated with ores of metals?

Which rocks are associated with fossil fuels?

Mention any two characteristics of Sedimentary Rocks.

Name the rocks which are most widespread on the earth.

Give two examples of rocks which are most widespread on the Earth.

Name the three stages of lithification of Sedimentary rocks.

Name the types Sedimentary rocks based on agents of formation.

Which agents are responsible for deposition of sediments?

What are known as metamorphic rocks?

Give two examples of metamorphic rocks.

Briefly define Mechanical Metamorphism.

Distinguish between the following:

Plutonic and Volcanic rocks.

Distinguish between the following:

Thermal and Dynamic Metamorphism.

Distinguish between the following:

Sills and Dykes.

Distinguish between the following:

Calcarious and Carbonacious rocks.

Distinguish between the following:

Acid Igneous Rocks and Basic Igneous Rocks.

Distinguish between rocks and minerals.

Describe how igneous rocks are formed.

Name any two characteristics of Igneous Rocks.

Give reasons for the following:

Igneous rocks are also called Primary Rocks or Mother Rocks.

Give a reason for the following:

Igneous rocks are used by builders and sculptors.

Give a reason for the following:

Sedimentary rocks are called secondary rocks.

Study the picture. Identify the rocks formed in the case of A, B, and C. Give reasons to support your answer.

How are sedimentary rocks formed?

Explain the formation of sedimentary rocks on the basis of agents of formation.

Give a reason for the following:

Mechanically formed sedimentary rocks are also termed asstratified rocks.

Give a reason for the following:

Rocks like peat, lignite and anthracite are called carbonaceous rocks.

Give a reason for the following:

Fossils are present in sedimentary rocks.

What is metamorphism?

What are the causes of metamorphism?

Give an example of rocks formed by heat and pressure.

State the chief characteristics of metamorphic rocks.

State the economic significance of rocks.

What is meant by rock cycle?

How does the Rock Cycle keep the Earth young?

Draw a well labelled diagram of rock cycle.

The stone tools were quite significant in the growth and development of human civilisation. Are the rocks still important to humans today? Give reasons to support your answer.

Do you think the minerals in a rock provide an important clue about how the rock was formed? Give reasons to support your answer.

‘The rock cycle has no beginning and no end.’ Justify this statement with examples.

Rock collection is a great hobby. Collect rock samples from different places and name them.