Page 76 - Journeys Through Society-7

4. The materials found in the mantle are in this state:
a. Solid b. Liquid
3. a b c d
c. Molten d. Gaseous
5. The cycle that describes the transition that all rocks undergo: 4. a b c d
a. Stone cycle b. Rock cycle
5. a b c d
c. Mineral cycle d. Water cycle

NEP Aligned

Understanding Based Questions

A. Fill in the blanks:
1. The ________________ is the thinnest layer of the Earth.
2. The core has a ________________ outer layer.
3. Metals are found in ________________ present in the rocks.
4. ________________ rocks are made up of fragments and sediments of other rock material.
5. Slate is an example of a ________________ rock.

B. Answer the following questions in short:
1. What is the difference between intrusive rocks and extrusive rocks?
2. Describe sedimentary rocks.
3. How are igneous rocks formed?
4. Give a brief description of the interior of the Earth.
5. What are metamorphic rocks?
C. Answer the following questions in detail:
1. Explain the rock cycle.
2. Explain with examples the various ways by which sedimentary rocks are formed.
3. Explain what the core and mantle are.
4. Write a note on the minerals which form rocks.
5. Explain the main layers of the Earth.

6. What is the difference between an extrusive rock and a sedimentary rock?

HOTS (Critical Thinking)
Rocks are harder than soil? Why?

Skill Based Questions

• Collect a few specimens of rocks from your surrounding. Try to find out weather they are igneous,
sedimentary or metamorpic. (Experiential Learning)

• Imagine that a group of geologists have decided to go on an expedition to the centre of the Earth. What
hurdles do you think they might have to face in their journey? Do you think that this mission likely to success?
(Scientific Temper)

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