Kerala Plus One Question Paper 2023 Geology

FIRST YEAR

Kerala Board
Question Paper
2023

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Reg. No. : ......................................
Name : ...........................................
FY-429
FIRST YEAR HIGHER SECONDARY EXAMINATION, MARCH 2023

Part – III Time : 2 Hours
GEOLOGY Cool-off time : 15 Minutes
Maximum : 60 Scores

General Instructions to Candidates :
 There is a ‘Cool-off time’ of 15 minutes in addition to the writing time.
 Use the ‘Cool-off time’ to get familiar with questions and to plan your answers.
 Read questions carefully before answering.
 Read the instructions carefully.
 Calculations, figures and graphs should be shown in the answer sheet itself.
 Malayalam version of the questions is also provided.
 Give equations wherever necessary.
 Electronic devices except non-programmable calculators are not allowed in the
Examination Hall.

 
    15  ‘  ’ .
 ‘  ’    
 .
      .
    .
  , , ,   
.
   .
    .
     
    .

FY-429 1 P.T.O.

SECTION – I
Questions 1 to 5, Answer all the questions, each carries 1 score. (5 × 1 = 5)
1. Streams that carry water throughout the year are called ________ streams.
(intermittent, ephemeral, perennial, influent)

2. Find the odd one out :
(till, delta, natural level, alluvial fan)

3. The geosphere has four sub-components, one among them is ________.

4. Complete the sequence :
water : hydrogeology : : rocks : _________.

5. Name a mineral used in the manufacture of pencils.

SECTION – II
Questions 6 to 15. Answer any nine questions, each carries 2 scores. (9 × 2 = 18)
6. Expand the names of the following geological organisations :
(i) ONGC
(ii) CGWB

7. Define the term mass wasting.

8. Differentiate gully erosion and sheet erosion.

9. Suggest any two methods of artificial recharge of ground water.

10. How are stalactites different from stalagmites ?

11. What is meant by the term drainage basin ?

12. Write a short note on glacial erosion.

FY-429 2

 – I

1  5    . 1  . (5 × 1 = 5)

1.      _________.
( ,  ,  ,  )

2.  
(, ,  ,  )

3.      _________.

4.  
 :  : :  : _________.

5.     .

 – II
6  15    9  .
2  . (9 × 2 = 18)
6.      .
(i) ONGC
(ii) CGWB

7.     .

8.       .

9.       
 .

10.      ?

11.       ?

12.      .
FY-429 3 P.T.O.

13. Explain how mushroom rocks are formed.

14. What is meant by glacial drift ?

15. “In the Moh’s scale of hardness, ten minerals are arranged in the order of their
increasing hardness.”
(a) Which is the softest mineral in the scale ?
(b) Name the mineral having hardness 10 in the Moh’s scale.

SECTION – III
Questions 16 to 22. Answer any five questions, each carries 3 scores.
(5 × 3 = 15)
16. Point out the importance of Geology in our daily life.

17. State the Planetesimal hypothesis to explain the origin of the earth.

18. Complete the table :
A B C
Physical weathering (i)
_________ exfoliation
Chemical weathering new substances are formed (ii)
_________
(iii)
_________ by the activities of organisms root wedging

19. Match column A, B and C :
A B C
aquifer basalt holds water
aquiclude sandstone holds and transmits water
aquifuge clay non-porous, impermeable

20. Explain the peculiarities of any three types of sand dunes.

21. (i) What are coral reefs ? (1)
(ii) Explain how coral reefs develop in the ocean. (2)

22. How are Himalayas formed ?

FY-429 4

13.   ?

14.     ?

15.      
  .
(a)         ?
(b)    10.

 – III
16  22    5  .
3  . (5 × 3 = 15)

16.      .

17.      .

18.   :
  
 (i)
_________  
   . (ii)
_________
(iii)
_________     

19.  , ,    :
  
     
  
 
 
  ,   .

20.     .

21. (i)    ? (1)
(ii)      ? (2)

22.      ?

FY-429 5 P.T.O.

SECTION – IV
Questions 23 to 27. Answer any FOUR questions, each carries 4 scores. (4 × 4 = 16)
23. Draw a neat labelled diagram of a soil profile and show the soil horizons.

24. Describe how ox-bow lakes develop near a stream channel.

25. With the help of a neat diagram show the general topography of the ocean floor and
label the following :
(i) abyssal plain
(ii) continental slope
(iii) continental shelf

26. (i) What is meant by the cleavage of a mineral ? (2)
(ii) What are the qualities that a mineral should possess in order to treat it as a
gemstone ? (2)

27. (i) What are the dome mountains ? (2)
(ii) How are relict mountains formed ? (2)

SECTION – V
Questions 28 and 29. Answer any ONE question carries 6 scores. (1 × 6 = 6)
28. Explain the circulation of water in a hydrologic cycle through various processes.

29. (i) What is meant by seafloor spreading ? (2)
(ii) Substantiate the continental drift hypothesis with any four evidences. (4)
______________

FY-429 6

 – IV
23  27    4  .
4  . (4 × 4 = 16)

23.       
.

24.       
 .

25.      .
(i)  
(ii) 
(iii) 

26. (i)       
 ? (2)
(ii)     
  ? (2)

27. (i)        ? (2)
(ii)      ? (2)

 – V
28, 29     . 6 . (1 × 6 = 6)
28.     
  .

29. (i)     ? (2)
(ii)    
    . (4)

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FY-429 7 P.T.O.

FY-429 8