Page 77 - Journeys Through Society-7

Learning by Doing Experiential Learning

The Earth’s crust is full of rocks and minerals, most of the precious ones being under the surface of the Earth. They are
often called precious and semi-precious stones and are used in the jewellery sector for making/decorating
ornaments. Find out more about the variety of these stones and paste their pictures in the notebook, with a small
write up on them.

Nurture the Values Life Skills

• Organize a group discussion on the topic “Structure of the Earth’s interior.”
• With the help of internet find out in which parts of the country do we find igneous rocks, sedimentary rocks and
metamorphic rocks? Plot the data on the map of India and paste it in the notebook.

Think Before You Write Cognitive Skills
• Solve the crossword with the help of clues given below:
1.

2. 3.

4.

5. 6. 7. 8.
9. 10.

11.

12.

13.

14.

15.

Across Down
2. can help identify but can't be your main source of 1. breaks smooth and reflects light
identification 3. breaks in jagged or rough edges
4. decomposition of rock caused be chemical reactions 5. formed from existing rock
resulting in the formation of new compounds 6. the process in which natural forces move weathered
10. forms as molten rock (magma) then cools and rock and soil from one place to another
hardens 7. formed as loose particles, are pressed/cemented
12. Colour left behind by mineral on a white tile together in layers
13. break down of rock into smaller pieces 8. any process that breaks down and creates sediment
14. pattern of the atoms 9. scratch mineral with another or use penny or nail
15. occurs when wind or water deposit sediment 11. how light reflects from the surface

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