Showing posts with label Science Question Paper. Show all posts
Showing posts with label Science Question Paper. Show all posts

6th Science - Term 1 Exam 2024 - Original Question Paper | Villupuram District | English Medium

6th Science - First Term Exam Question Paper with Answers 2024-25 | Villupuram District

FIRST TERM - SUMMATIVE ASSESSMENT (SA) - 2024-25

SCIENCE - Class 6 - [Max. Marks: 60]

I. Choose the correct answer. (8x1=8)

1. Quantity that can be measured is called __________

a) Physical Quantity b) Measurement c) Unit d) Motion
Answer: a) Physical Quantity

2. Unit of Speed is

a) m b) s c) Kg d) m/s
Answer: d) m/s

3. __________ is not made of matter.

a) Gold Ring b) Iron nail c) Light way d) Oil Drop
Answer: c) Light way (Light is a form of energy, not matter)

4. Seeds from water-melon can be removed by __________

a) Hand Picking b) Filteration c) Magnetic separation d) Decantation
Answer: a) Hand Picking

5. Among the following __________ is not a mixture.

a) Coffee with milk b) Lemon Juice c) Water d) Ice cream embedded with Nuts
Answer: c) Water (Water is a compound)

6. The habitat of Water hyacinth is __________

a) Aquatic b) Terrestrial c) Desert d) Mountain
Answer: a) Aquatic

7. Pond is an example of __________ ecosystem.

a) Marine b) Fresh water c) Deserts d) Mountain
Answer: b) Fresh water

8. Bacteria are very small __________ Microorganism.

a) Prokaryotic b) Eukaryotic c) Protozoa d) Acellular
Answer: a) Prokaryotic

II. Fill in the blanks: (8x1=8)

9. Malnutrition leads to diseases.

10. Iodine deficiency causes goitre in adults.

11. Typhoid is transmitted due to contamination of food and water.

12. Based on the number of cells present animals are classified into unicellular and multicellular.

13. Amoeba moves with the help of pseudopodia.

14. Earth's Surface is covered by 71% of Water. The desert places on the earth are arid/dry.

15. Fixation and absorption are the main functions of roots.

16. Matter is made up of atoms.

III. Match the following: (5x1=5)

Column A Column B
17. Vitamin A Night Blindness
18. Vitamin B Beri Beri
19. Vitamin C Scurvy
20. Vitamin D Rickets
21. Vitamin E Sterility

IV. Answer any 12 of the following. (12x2=24)

22. Define - Mass

Mass is the measure of the amount of matter in an object. Its SI unit is the kilogram (kg).

23. What are the two parts present in a Measurement?

A measurement has two parts: a number and a unit.

24. Differentiate between Rotational and Curvilinear motions.

Rotational Motion: The movement of an object in a circular path about its own axis. Example: Rotation of the Earth.
Curvilinear Motion: The movement of an object along a curved path. Example: A ball thrown through the air.

25. Rotation of the earth is a Periodic Motion. Justify.

The rotation of the Earth is a periodic motion because it repeats itself at a regular, fixed interval of time, which is approximately 24 hours.

26. Why do we separate Mixtures?

We separate mixtures to:
  • Remove unwanted or harmful components.
  • Obtain useful components.
  • Obtain a substance in its pure form.

27. Define the Term Matter

Matter is defined as anything that has mass and occupies space (volume).

28. Define the Term Habitat.

A habitat is the natural environment where an organism lives, which provides it with food, water, shelter, and a place to reproduce.

29. Mention few Desert Plants.

Cactus, Date Palm, Acacia, and Aloe vera.

30. Relate the terms leaves and Photosynthesis.

Leaves are the primary sites for photosynthesis. They contain chlorophyll to trap sunlight and stomata to exchange gases (carbon dioxide and oxygen), which are essential for plants to make their own food.

31. What are the body parts of a Snake?

A snake's body is typically composed of a head, a long trunk (body), and a tail. They do not have limbs.

32. Where can see Camels in India?

Camels are primarily found in the desert regions of India, especially in the Thar Desert in Rajasthan.

33. Differentiate between Carbohydrate and Protein.

Carbohydrates: They are energy-giving nutrients. Sources include rice, wheat, and sugar.
Proteins: They are body-building nutrients required for growth and repair. Sources include pulses, eggs, and milk.

34. Define Balanced Diet.

A balanced diet is one that contains all the essential nutrients like carbohydrates, proteins, fats, vitamins, and minerals, along with water and fibre, in the right proportions.

35. Why should Fruits and Vegetables not be Washed after Cutting?

Washing fruits and vegetables after cutting can cause the loss of water-soluble vitamins, like Vitamin C and B-complex vitamins, as they dissolve in water and get washed away.

36. Mention any two Viral Diseases.

Two viral diseases are the Common Cold and Influenza (Flu).

V. Answer in the following and Three only. (3x5=15)

37. Tabulate the Vitamins and their Corresponding deficiency Diseases.

Vitamin Deficiency Disease
Vitamin ANight Blindness
Vitamin BBeri-Beri
Vitamin CScurvy
Vitamin DRickets
Vitamin ESterility
Vitamin KHaemorrhage (Excessive bleeding due to delayed clotting)

38. Describe the various features which help Camel dwell well in the Desert.

Features that help a camel survive in the desert:
  • Long Eyelashes: Protect eyes from blowing sand.
  • Hump: Stores fat which is a source of energy and water.
  • Large, Padded Feet: Help to walk on hot sand without sinking.
  • Thick Skin: Protects from the intense desert sun.
  • Ability to close nostrils: Prevents sand from entering the nose.
  • Water Conservation: Excretes concentrated urine and dry dung to save water. It can also drink a large amount of water at once.

39. Make a list of the Functions of Roots and Stem.

Functions of Roots:
  1. Anchorage: Fixes the plant firmly to the soil.
  2. Absorption: Absorbs water and minerals from the soil.
  3. Conduction: Transports absorbed water and minerals to the stem.
  4. Storage: Some roots store food, for example, carrots and radishes.
Functions of Stem:
  1. Support: Provides support to branches, leaves, flowers, and fruits.
  2. Conduction: Transports water and minerals from roots to other parts and food from leaves to other parts.
  3. Storage: Some stems store food, for example, potatoes and ginger.
  4. Photosynthesis: Green stems can perform photosynthesis.

40. What is motion? Classify different types of Motion with examples.

Motion: An object is said to be in motion when its position changes with respect to time and its surroundings.
Classification of Motion:
  • Linear Motion: Motion along a straight line. (Example: A car moving on a straight road).
  • Circular Motion: Motion along a circular path. (Example: The tip of a clock's hand).
  • Rotational Motion: Motion of a body about its own fixed axis. (Example: A spinning top).
  • Oscillatory Motion: Repetitive to-and-fro motion about a central position. (Example: The swinging of a pendulum).
  • Random Motion: Irregular and unpredictable motion. (Example: The movement of a butterfly).
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6th Science - Term 1 Exam 2024 - Original Question Paper | Krishnagiri District | Tamil Medium

6 роЖроо் ро╡роХுрок்рокு роЕро▒ிро╡ிропро▓் - рооுродро▓் рокро░ுро╡род் родேро░்ро╡ு 2024 ро╡ிройாрод்родாро│் рооро▒்ро▒ுроо் ро╡ிроЯைроХро│்

роХிро░ுро╖்рогроХிро░ி рооாро╡роЯ்роЯроо் | роЪроороЪ்роЪீро░் роХро▓்ро╡ி | роородிрок்рокெрог்роХро│் : 60 | роХாро▓роо் : 2.00 роорогி

рокроХுродி I: роЪро░ிропாрой ро╡ிроЯைропைрод் родேро░்рои்родெроЯுрод்родு роОро┤ுродுроХ. (10 x 1 = 10)

  1. 7 рооீ роОрой்рокродை роЪெрой்роЯி рооீроЯ்роЯро░ிро▓் рооாро▒்ро▒ிройாро▓் роХிроЯைрок்рокродு __________.

    • роЕ) 70 роЪெ.рооீ.
    • роЖ) 7 роЪெ.рооீ.
    • роЗ) 700 роЪெ.рооீ.
    • роИ) 7000 роЪெ.рооீ.

  2. роХீро┤்роХрог்роЯро╡ро▒்ро▒ுро│் роОродு роЕро▓ைро╡ுро▒ு роЗропроХ்роХроо்?

    • роЕ) рокூрооி родрой் роЕроЪ்роЪைрок் рокро▒்ро▒ிроЪ் роЪுро┤ро▓்родро▓்
    • роЖ) роиிро▓ро╡ு рокூрооிропைроЪ் роЪுро▒்ро▒ி ро╡ро░ுродро▓்
    • роЗ) роЕродிро░்ро╡ுро▒ுроо் роХроо்рокிропிрой் рооுрой்рокிрой் роЗропроХ்роХроо்
    • роИ) рооேро▒்роХрог்роЯ роЕройைрод்родுроо்

  3. __________ рокро░ுрок்рокொро░ுро│ாро▓் роЖройродро▓்ро▓.

    • роЕ) родроЩ்роХ рооோродிро░роо்
    • роЖ) роЗро░ுроо்рокு роЖрогி
    • роЗ) роТро│ி
    • роИ) роОрог்рогெроп்род் родுро│ி

  4. рокிрой்ро╡ро░ுро╡ройро╡ро▒்ро▒ுро│் роОродு роХро▓ро╡ை роЕро▓்ро▓?

    • роЕ) рокாро▓ுроЯрой் роХро▓рои்род роХாрокி
    • роЖ) роОро▓ுрооிроЪ்роЪைроЪ் роЪாро▒ு
    • роЗ) роиீро░்
    • роИ) роХொроЯ்роЯைроХро│் рокுродைрод்род роРро╕்роХிро░ீроо்

  5. роЗро▓ைрод்родுро│ைропிрой் рооுроХ்роХிроп ро╡ேро▓ை __________.

    • роЕ) роиீро░ைроХ் роХроЯрод்родுродро▓்
    • роЖ) роиீро░ாро╡ிрок் рокோроХ்роХு
    • роЗ) роТро│ிроЪ் роЪேро░்роХ்роХை
    • роИ) роЙро▒ிроЮ்роЪுродро▓்

  6. роЖроХாропрод் родாрооро░ைропிрой் ро╡ாро┤ிроЯроо் __________.

    • роЕ) роиீро░்
    • роЖ) роиிро▓роо்
    • роЗ) рокாро▓ைро╡ройроо்
    • роИ) рооро▓ை

  7. роЙропிро░ுро│்ро│ рокொро░ுро│்роХро│் роЕро▓்ро▓родு роЙропிро░ிройроЩ்роХро│ைрок் рокро▒்ро▒ி рокроЯிрок்рокродு __________.

    • роЕ) роЙро│ро╡ிропро▓்
    • роЖ) роЙропிро░ிропро▓்
    • роЗ) ро╡ிро▓роЩ்роХிропро▓்
    • роИ) родாро╡ро░ро╡ிропро▓்

  8. рокро▓்ро▓ிроХро│் роОродрой் рооூро▓роо் роЪுро╡ாроЪிроХ்роХிрой்ро▒рой?

    • роЕ) родோро▓்
    • роЖ) роЪெро╡ுро│்роХро│்
    • роЗ) роиுро░ைропீро░ро▓்роХро│்
    • роИ) роЪுро╡ாроЪ роиுрог்роХுро┤ро▓்

  9. ро╕்роХро░்ро╡ி __________ роХுро▒ைрокாроЯ்роЯிройாро▓் роЙрог்роЯாроХிро▒родு.

    • роЕ) ро╡ைроЯ்роЯрооிрой் A
    • роЖ) ро╡ைроЯ்роЯрооிрой் B
    • роЗ) ро╡ைроЯ்роЯрооிрой் C
    • роИ) ро╡ைроЯ்роЯрооிрой் D

  10. роХрогிройிропிрой் родрои்родை роОрой роЕро┤ைроХ்роХрок்рокроЯுрокро╡ро░் ропாро░்?

    • роЕ) рооாро░்роЯ்роЯிрой் ро▓ூродро░் роХிроЩ்
    • роЖ) роХிро░роХாроо்рокெро▓்
    • роЗ) роЪாро░்ро▓ி роЪாрок்ро│ிрой்
    • роИ) роЪாро░்ро▓ро╕் рокாрокேроЬ்

рокроХுродி II: роОро╡ைропேройுроо் 15 ро╡ிройாроХ்роХро│ுроХ்роХு ро╡ிроЯைропро│ிроХ்роХро╡ுроо். (15 x 2 = 30)

  1. роЪро░ிропா / родро╡ро▒ா роОрой роОро┤ுродுроХ.

    роЕ) роТро░ுро╡ро░ிрой் рооாро░்рокро│ро╡ை рооீроЯ்роЯро░் роЕро│ро╡ு роХோро▓ைрок் рокропрой்рокроЯுрод்родி роЕро│ро╡ிроЯ рооுроЯிропுроо். -

    роЪро░ி

    роЖ) SI роЕро▓роХு рооுро▒ை роЙро▓роХроо் рооுро┤ுро╡родுроо் роПро▒்ро▒ுроХ் роХொро│்ро│рок்рокроЯ்роЯுро│்ро│родு. - роЪро░ி

  2. роиிро▒ைропிрой் SI роЕро▓роХு роОрой்рой?

    ро╡ிроЯை: роиிро▒ைропிрой் SI роЕро▓роХு

    роХிро▓ோроХிро░ாроо் (роХி.роХி)
    роЖроХுроо்.

  3. роТрок்рокுрооைропிрой் роЕроЯிрок்рокроЯைропிро▓் роиிро░рок்рокுроХ.

    роЕ) рокрои்родை роЙродைрод்родро▓் : родொроЯு ро╡ிроЪை :: роЗро▓ை роХீро┤ே ро╡ிро┤ுродро▓் :

    родொроЯா ро╡ிроЪை

    роЖ) родொро▓ைро╡ு : рооீроЯ்роЯро░் :: ро╡ேроХроо் : рооீроЯ்роЯро░்/ро╡ிройாроЯி

  4. роиிро░рок்рокுроХ.

    роЕ) рокро░ுрок்рокொро░ுро│் роОрой்рокродு

    роЕрогுроХ்роХро│ாро▓்
    роЖройродு.

    роЖ) 'роЙрок்рокுрооா' ро╡ிро▓் роЗро░ுрои்родு роХைроХро│ாро▓் рокொро▒ுроХ்роХி роОроЯுрод்родро▓் рооுро▒ைропிро▓் рооிро│роХாропிройை роиீроХ்роХро▓ாроо்.

  5. ро╡ாро┤ிроЯроо் роОрой்рокродை ро╡ро░ைропро▒ு.

    ро╡ிроЯை: роТро░ு роЙропிро░ிройроо் роЙропிро░்ро╡ாро┤்ро╡родро▒்роХுроо், роЗройрок்рокெро░ுроХ்роХроо் роЪெроп்ро╡родро▒்роХுроо் родேро╡ைрок்рокроЯுроо் роЗроЯрооே роЕродрой் ро╡ாро┤ிроЯроо் роОройрок்рокроЯுроо்.

  6. рокொро░ுрод்родுроХ.

    роЕ) рооро▓ைроХро│்
    роЗрооропрооро▓ை
    роЖ) рокாро▓ைро╡ройроо்ро╡ро▒рог்роЯ роЗроЯроЩ்роХро│்
    роЗ) родрог்роЯுроХிро│ைроХро│்
    роИ) роТро│ிроЪ்роЪேро░்роХ்роХைроЗро▓ைроХро│்

  7. роЪро░ிропா, родро╡ро▒ா роОрой роОро┤ுродுроХ.

    роЕ) ро╡ேро░் рооுроЯ்роХро│ாроХ рооாро▒்ро▒ுро░ு роЕроЯைрои்родுро│்ро│родு. -

    родро╡ро▒ு
    (роЪро░ிропாрой ро╡ிроЯை: роЗро▓ைроХро│் роЕро▓்ро▓родு родрог்роЯு рооுроЯ்роХро│ாроХ рооாро▒்ро▒ுро░ு роЕроЯைропுроо்.)

    роЖ) рокроЪுрои்родாро╡ро░роЩ்роХро│ுроХ்роХு роЪூро░ிроп роТро│ி родேро╡ை. - роЪро░ி

  8. роХோроЯிроЯ்роЯ роЗроЯрод்родை роиிро░рок்рокு.

    роЕ) рооீройிрой் роЪுро╡ாроЪ роЙро▒ுрок்рокு

    роЪெро╡ுро│்роХро│்
    роЖроХுроо்.

    роЖ) роТроЯ்роЯроХроЩ்роХро│் родроЩ்роХро│் родிрооிро▓்роХро│ிро▓் роХொро┤ுрок்рокைроЪ் роЪேрооிроХ்роХிрой்ро▒рой.

  9. роЕрооீрокாро╡ிрой் роЗроЯрок்рокெропро░்роЪ்роЪி роЙро▒ுрок்рокு роОродு?

    ро╡ிроЯை: роЕрооீрокாро╡ிрой் роЗроЯрок்рокெропро░்роЪ்роЪி роЙро▒ுрок்рокு

    рокோро▓ிроХ்роХாро▓்роХро│்
    роЖроХுроо்.

  10. рокாроо்рокுроХро│ிрой் роЙроЯро▓் рокроХுродிроХро│் ропாро╡ை?

    ро╡ிроЯை: рокாроо்рокுроХро│ிрой் роЙроЯро▓் рокроХுродிроХро│்

    родро▓ை, роЙроЯро▓், ро╡ாро▓்
    роЖроХுроо்.

  11. роТрок்рокுрооைропிрой் роЕроЯிрок்рокроЯைропிро▓் роиிро░рок்рокுроХ.

    роЕ) роЕро░ிроЪி : роХாро░்рокோро╣ைроЯ்ро░ேроЯ் :: рокро░ுрок்рокு ро╡роХைроХро│் :

    рокுро░родроо்

    роЖ) ро╡ைроЯ்роЯрооிрой் D, ро░ிроХ்роХெроЯ்ро╕் :: ро╡ைроЯ்роЯрооிрой் C : ро╕்роХро░்ро╡ி

  12. рокொро░ுрод்родுроХ.

    роЕ) ро╡ைроЯ்роЯрооிрой் A
    рооாро▓ைроХ் роХрог் роиோроп்
    роЖ) ро╡ைроЯ்роЯрооிрой் Bрокெро░ிрокெро░ி
    роЗ) ро╡ைроЯ்роЯрооிрой் Cро╕்роХро░்ро╡ி
    роИ) ро╡ைроЯ்роЯрооிрой் Dро░ிроХ்роХெроЯ்ро╕்

  13. роЪро░ிро╡ிроХிрод роЙрогро╡ு - ро╡ро░ைропро▒ு.

    ро╡ிроЯை: роиாроо் роЙрог்рогுроо் роЙрогро╡ிро▓் роЕройைрод்родு роКроЯ்роЯроЪ்роЪрод்родுроХ்роХро│ுроо் роЪро░ிропாрой ро╡ிроХிродрод்родிро▓் роХро▓рои்родு роЗро░ுрок்рокродே роЪро░ிро╡ிроХிрод роЙрогро╡ு роОройрок்рокроЯுроо்.

  14. ро╡ைро░ро╕ாро▓் роПро▒்рокроЯுроо் роиோроп்роХро│் роЗро░рог்роЯிройை роОро┤ுродுроХ.

    ро╡ிроЯை:

    роЪாродாро░рог роЪро│ி, роЗрой்роГрок்ро│ூропрой்ро╕ா.

  15. роХрогிройி роОрой்ро▒ாро▓் роОрой்рой?

    ро╡ிроЯை: роХрогிройி роОрой்рокродு родро░ро╡ுроХро│ை роЙро│்ро│ீроЯாроХрок் рокெро▒்ро▒ு, роЕродройைроЪ் роЪெропро▓்рокроЯுрод்родி, роЪро░ிропாрой ро╡ெро│ிропீроЯ்роЯைрод் родро░ுроо் роТро░ு рооிрой்ройрогு роЪாродройроо் роЖроХுроо்.

  16. роиிро░рок்рокுроХ.

    роЕ) родро░ро╡ு роОрой்рокродு

    роЪெропро▓்рокроЯுрод்родрок்рокроЯாрод ро╡ிро╡ро░роЩ்роХро│்
    роЖроХுроо்.

    роЖ) роХுро▒ிропீроЯ்роЯு роОрог்роХро│ைрок் рокропрой்рокроЯுрод்родிроХ் роХрогроХ்роХிроЯுроо் роХро░ுро╡ி роЕрокாроХро╕் (роорогிроХ்роХроЯ்роЯை).

  17. роЪро░ிропா, родро╡ро▒ா роОрой роОро┤ுродுроХ.

    роЕ) роХрогிройி роТро░ு рооிрой்ройрогு роЗропрои்родிро░роо். -

    роЪро░ி

    роЖ) роХрогிройிропைроХ் роХрог்роЯро▒ிрои்родро╡ро░் роЪро░் роРроЪроХ் роиிропூроЯ்роЯрой். - родро╡ро▒ு (роЪро░ிропாрой ро╡ிроЯை: роЪாро░்ро▓ро╕் рокாрокேроЬ் роХрогிройிропிрой் родрои்родை роОрой роЕро┤ைроХ்роХрок்рокроЯுроХிро▒ாро░்.)

  18. рокிрой்ро╡ро░ுроо் роЕро▓роХுроХро│ை роПро▒ுро╡ро░ிроЪைропிро▓் роОро┤ுродுроХ: 1 рооீроЯ்роЯро░், 1 роЪெрой்роЯி рооீроЯ்роЯро░், 1 роХிро▓ோ рооீроЯ்роЯро░் рооро▒்ро▒ுроо் 1 рооிро▓்ро▓ி рооீроЯ்роЯро░்.

    ро╡ிроЯை:

    1 рооிро▓்ро▓ி рооீроЯ்роЯро░், 1 роЪெрой்роЯி рооீроЯ்роЯро░், 1 рооீроЯ்роЯро░், 1 роХிро▓ோ рооீроЯ்роЯро░்

  19. рокூрооிропிрой் роЪுро┤ро▒்роЪி роХாро▓ роТро┤ுроЩ்роХு роЗропроХ்роХрооாроХுроо். роХாро░рогроо் роХூро▒ுроХ.

    ро╡ிроЯை: рокூрооி родрой் роЕроЪ்роЪிро▓் роЪுро┤ро▓்ро╡родு роТро░ு роХுро▒ிрок்рокிроЯ்роЯ роХாро▓ роЗроЯைро╡ெро│ிропிро▓் (24 роорогி роиேро░роо்) рооீрог்роЯுроо் рооீрог்роЯுроо் роЪீро░ாроХ роироЯைрокெро▒ுро╡родாро▓், роЗродு роХாро▓ роТро┤ுроЩ்роХு роЗропроХ்роХрооாроХுроо்.

  20. роХро▓ро╡ைроХро│ை роиாроо் роПрой் рокிро░ிрод்родெроЯுроХ்роХ ро╡ேрог்роЯுроо்?

    ро╡ிроЯை: роХро▓ро╡ைроХро│ிро▓் роЙро│்ро│ родீроЩ்роХு ро╡ிро│ைро╡ிроХ்роХுроо் рооро▒்ро▒ுроо் родேро╡ைропро▒்ро▒рок் рокொро░ுро│்роХро│ை роиீроХ்роХро╡ுроо், рокропройுро│்ро│рок் рокொро░ுро│்роХро│ைрод் родройிропாроХрок் рокெро▒ро╡ுроо், роТро░ு рокொро░ுро│ைрод் родூроп роиிро▓ைропிро▓் рокெро▒ро╡ுроо் роХро▓ро╡ைроХро│ைрок் рокிро░ிрод்родெроЯுроХ்роХ ро╡ேрог்роЯுроо்.

рокроХுродி III: ро╡ிро░ிро╡ாрой ро╡ிроЯைропро│ி (роОро╡ைропேройுроо் роиாрой்роХு). (4 x 5 = 20)

  1. ро╡ைроЯ்роЯрооிрой்роХро│ைропுроо் роЕро╡ро▒்ро▒ிрой் роХுро▒ைрокாроЯ்роЯாро▓் роПро▒்рокроЯுроо் роиோроп்роХро│ைропுроо் роЕроЯ்роЯро╡рогைрок்рокроЯுрод்родுроХ.

    ро╡ைроЯ்роЯрооிрой் роХுро▒ைрокாроЯ்роЯு роиோроп்
    ро╡ைроЯ்роЯрооிрой் A рооாро▓ைроХ்роХрог் роиோроп்
    ро╡ைроЯ்роЯрооிрой் B рокெро░ிрокெро░ி
    ро╡ைроЯ்роЯрооிрой் C ро╕்роХро░்ро╡ி
    ро╡ைроЯ்роЯрооிрой் D ро░ிроХ்роХெроЯ்ро╕்
    ро╡ைроЯ்роЯрооிрой் E рооро▓роЯ்роЯுрод்родрой்рооை, роиро░роо்рокு рокро▓ро╡ீройроо்
    ро╡ைроЯ்роЯрооிрой் K роЗро░род்родроо் роЙро▒ைропாрооை

  2. роЙроЩ்роХро│ுроЯைроп рокро│்ро│ிрод் родோроЯ்роЯрод்родிро▓் роЙро│்ро│ родாро╡ро░роЩ்роХро│ைрок் рокроЯ்роЯிропро▓ிроЯுроХ.

    ро╡ிроЯை: (роЗродு роТро░ு рооாродிро░ி рокродிро▓். рооாрогро╡ро░்роХро│் родроЩ்роХро│் рокро│்ро│ிроХ்роХு роПро▒்рок роОро┤ுродро▓ாроо்.)

    роОроЩ்роХро│் рокро│்ро│ிрод் родோроЯ்роЯрод்родிро▓் роЙро│்ро│ родாро╡ро░роЩ்роХро│்:

    • рооாрооро░роо்
    • ро╡ேрок்рок рооро░роо்
    • роЪெроо்рокро░ுрод்родிроЪ் роЪெроЯி
    • ро░ோроЬாроЪ் роЪெроЯி
    • родுро│роЪிроЪ் роЪெроЯி
    • рооро▓்ро▓ிроХைроХ் роХொроЯி
    • ро╡ாро┤ை рооро░роо்

  3. роЙройродு ро╡ீроЯ்роЯிро▒்роХுроо் роЙройродு рокро│்ро│ிроХ்роХுроо் роЗроЯைропே роЙро│்ро│ родொро▓ைро╡ு 2250 рооீ. роЗрои்родрод் родொро▓ைро╡ிройை роХிро▓ோ рооீроЯ்роЯро░ிро▓் роХுро▒ிрок்рокிроЯுроХ.

    ро╡ிроЯை:

    роироороХ்роХுрод் родெро░ிропுроо், 1000 рооீроЯ்роЯро░் = 1 роХிро▓ோ рооீроЯ்роЯро░்

    роХொроЯுроХ்роХрок்рокроЯ்роЯ родொро▓ைро╡ு = 2250 рооீроЯ்роЯро░்

    роХிро▓ோ рооீроЯ்роЯро░ிро▓் рооாро▒்ро▒, рооீроЯ்роЯро░ை 1000 роЖро▓் ро╡роХுроХ்роХ ро╡ேрог்роЯுроо்.

    родொро▓ைро╡ு (роХி.рооீ) = 2250 / 1000

    родொро▓ைро╡ு = 2.25 роХி.рооீ

  4. роХொроЯுроХ்роХрок்рокроЯ்роЯுро│்ро│ роХро░ுрод்родுрок் рокроЯрод்родிро▓் роЕродрой் родொроЯро░்роЪ்роЪிропாрой роХро░ுрод்родுроХро│ை ро╡ிроЯுрокроЯ்роЯ роЗроЯроЩ்роХро│ிро▓் рокூро░்род்родி роЪெроп்роХ.

    ро╡ாро┤ிроЯроо்

    • роиீро░்ро╡ாро┤ிроЯроо்
      • роирой்ройீро░் ро╡ாро┤ிроЯроо்
        • роЖро▒ு
        • роХுро│роо்
        • роПро░ி
      • роХроЯро▓்роиீро░் ро╡ாро┤ிроЯроо்
    • роиிро▓ро╡ாро┤ிроЯроо்
      • ро╡ройроо்
      • рокுро▓்ро╡ெро│ி
      • рокாро▓ைро╡ройроо்
      • рооро▓ை

  5. рокро▓்ро╡ேро▒ு роЗропроХ்роХроЩ்роХро│ை роЙродாро░рогрод்родுроЯрой் ро╡роХைрок்рокроЯுрод்родுроХ.

    ро╡ிроЯை:

    1. роиேро░்роХ்роХோроЯ்роЯு роЗропроХ்роХроо்: рокொро░ுро│ாройродு роиேро░்роХ்роХோроЯ்роЯுрок் рокாродைропிро▓் роЗропроЩ்роХுродро▓். (роО.роХா: роиேро░ாроХ ро╡ிро┤ுроо் рокрои்родு)
    2. ро╡роЯ்роЯ роЗропроХ்роХроо்: рокொро░ுро│ாройродு ро╡роЯ்роЯрок் рокாродைропிро▓் роЗропроЩ்роХுродро▓். (роО.роХா: роХропிро▒்ро▒ிро▓் роХроЯ்роЯрок்рокроЯ்роЯ роХро▓்ро▓ைроЪ் роЪுро▒்ро▒ுродро▓்)
    3. роЕро▓ைро╡ு роЗропроХ்роХроо்: роТро░ு рокுро│்ро│ிропை рооைропрооாроХроХ் роХொрог்роЯு роТро░ு рокொро░ுро│் роЪீро░ாрой роХாро▓ роЗроЯைро╡ெро│ிропிро▓் рооுрой்ройுроо் рокிрой்ройுрооாроХро╡ோ роЕро▓்ро▓родு роЗроЯрооுроо் ро╡ро▓рооுрооாроХро╡ோ роироХро░ுродро▓். (роО.роХா: родройி роКроЪро▓்)
    4. родро▒்роЪுро┤ро▒்роЪி роЗропроХ்роХроо்: роТро░ு рокொро░ுро│ிрой் роЗропроХ்роХроо், роЕродрой் роЕроЪ்роЪைрок் рокро▒்ро▒ிропродாроХ роЗро░ுрод்родро▓். (роО.роХா: рокроо்рокро░род்родிрой் роЪுро┤ро▒்роЪி)
    5. роТро┤ுроЩ்роХро▒்ро▒ роЗропроХ்роХроо்: ро╡ெро╡்ро╡ேро▒ு родிроЪைроХро│ிро▓் роЗропроЩ்роХுроо் рокொро░ுро│ிрой் роЗропроХ்роХроо். (роО.роХா: рокூроХ்роХро│ைрод் родேроЯிроЪ் роЪெро▓்ро▓ுроо் родேройீ)

  6. рокொро░ுрод்родுроХ. (роХрогிройிропிрой் родро▓ைрооுро▒ைроХро│்)

    роЕ) рооுродро▓் родро▓ைрооுро▒ை
    ро╡ெро▒்ро▒ிроЯроХ் роХுро┤ாроп்роХро│்
    роЖ) роЗро░рог்роЯாроо் родро▓ைрооுро▒ைрооிрой்рооропрок் рокெро░ுроХ்роХி (роЯிро░ாрой்роЪிро╕்роЯро░்)
    роЗ) рооூрой்ро▒ாроо் родро▓ைрооுро▒ைроТро░ுроЩ்роХிрогைрои்род роЪுро▒்ро▒ு
    роИ) роиாрой்роХாроо் родро▓ைрооுро▒ைроиுрог்роЪெропро▓ி
    роЙ) роРрои்родாроо் родро▓ைрооுро▒ைроЪெропро▒்роХை роиுрог்рогро▒ிро╡ு
6th Science First Term Question Paper 2024 Krishnagiri District
6th Science First Term Question Paper 2024 Krishnagiri District 6th Science First Term Question Paper 2024 Krishnagiri District
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7th Science First Term Summative Assessment Question Paper with Answers 2024-25 | Villupuram District

7th Science First Term Summative Assessment Question Paper with Answers 2024-25 | Villupuram District

FIRST TERM - SUMMATIVE ASSESSMENT(SA) - 2024-25

Class: 7

Subject: SCIENCE

Time Allowed: 2.00 Hours

Max. Marks: 60

I. Choose the correct answer. 10x1=10

1.Light year is the unit of

  • a) Distance
  • b) Time
  • c) Density
  • d) Both Length and Time
Answer: a) Distance

2.An element which is always Lustrous, Malleable and Ductile is

  • a) Non-metal
  • b) Metal
  • c) Metalloid
  • d) Gas
Answer: b) Metal

3.Which one of the following is an example for a metal.

  • a) Iron
  • b) Oxygen
  • c) Helium
  • d) Water
Answer: a) Iron

4.Oxygen, Hydrogen and Sulphur are examples for

  • a) Metals
  • b) Non-metals
  • c) Metalloids
  • d) Inert Gas
Answer: b) Non-metals

5.The metal which is liquid at room temperature is

  • a) Chlorine
  • b) Sulphur
  • c) Mercury
  • d) Silver
Answer: c) Mercury

6.The basic unit of Matter is __________

  • a) Element
  • b) Atom
  • c) Molecule
  • d) Electron
Answer: b) Atom

7.__________ is positively charged.

  • a) Proton
  • b) Electron
  • c) Molecule
  • d) Neutron
Answer: a) Proton

8.Vegetative Propagation by leaves takes place in

  • a) Bryophyllum
  • b) Fungi
  • c) Virus
  • d) Bacteria
Answer: a) Bryophyllum

9.Reproductive part of a Plant is

  • a) Root
  • b) Stem
  • c) Leaf
  • d) Flower
Answer: d) Flower

10.Climbing roots are seen in

  • a) Betel
  • b) Black pepper
  • c) Both of them
  • d) None of them
Answer: c) Both of them
II. Fill in the blanks: 10x1=10

11.Eyes are considered as windows to the world.

12.Tuberculosis is caused by the Bacterium Mycobacterium tuberculosis.

13.The male Reproductive part of a Flower is Androecium / Stamen.

14.After Fertilization the ovules becomes seeds.

15.Breathing Roots are seen in mangrove plants.

16.The smaller particles found in the atom are called sub-atomic particles.

17.Graphite is the only Non - metal which conducts electricity.

18.The smallest particle of matter that can exist by itself is molecule.

19.There are 118 number of known elements.

20.The Rate of Change of velocity is acceleration.

III. Match the following: 5x1=5
Question Correct Match
21. Displacement Metre
22. Light travelling through vacuum Uniform Velocity
23. Speed of Ship Knot
24. Centre of gravity of geometrical shaped objects Geometric centre
25. Stability Larger base area
IV. Answer any Ten questions: 10x2=20

26.What is One light year?

A light year is the distance that light travels in one year in a vacuum. It is equal to 9.46 x 1012 km.

27.Define - Astronomical Unit.

An astronomical unit (AU) is defined as the mean distance between the center of the Earth and the center of the Sun. 1 AU is approximately 149.6 million kilometers.

28.Length of Scale : metre :: Speed of Aeroplane : ?

Speed of Aeroplane : Knot

29.Define Molecule.

A molecule is the smallest particle of an element or a compound that can exist on its own and shows all the properties of that substance. It is formed when two or more atoms are chemically bonded together.

30.Write the Chemical formula for the following elements.

a) Hydrogen - H₂

b) Nitrogen - N₂

c) Ozone - O₃

d) Sulphur - S₈

31.Name the Sub - atomic particles.

The sub-atomic particles are:
  • Protons
  • Neutrons
  • Electrons

32.What are the Characteristics of Proton?

  • It is a positively charged particle.
  • It is located in the nucleus of an atom.
  • Its mass is approximately 1.672 x 10-27 kg.

33.What are the two important parts of a Flower.

The two important (essential) parts of a flower are:
  1. Androecium: The male reproductive part.
  2. Gynoecium: The female reproductive part.

34.Define Pollination.

Pollination is the process of transferring pollen grains from the anther (male part) of a flower to the stigma (female part) of the same or another flower.

35.What is Hygiene?

Hygiene refers to a set of practices performed to preserve health and prevent the spread of diseases. It includes personal hygiene (e.g., hand washing, bathing) and environmental hygiene.

36.Give any two Communicable diseases, which spread in your locality during Monsoon.

Two communicable diseases that commonly spread during monsoon are:
  1. Cholera
  2. Typhoid
(Other examples: Dengue, Malaria, Common Cold)

37.What first aid will you provide in the case of Bruises?

For a bruise, apply an ice pack or a cold compress wrapped in a cloth to the affected area for 15-20 minutes. This helps to reduce swelling, pain, and bleeding under the skin.
V. Answer briefly: (Any 3) 3x5=15

38.Write about any three Communicable diseases in detail.

1. Cholera:

  • Causative agent: Bacterium (Vibrio cholerae).
  • Mode of transmission: Spreads through contaminated food and water.
  • Symptoms: Severe diarrhoea, vomiting, and dehydration.
  • Prevention: Drinking boiled water, maintaining proper sanitation, and vaccination.

2. Tuberculosis (TB):

  • Causative agent: Bacterium (Mycobacterium tuberculosis).
  • Mode of transmission: Spreads through the air when an infected person coughs or sneezes (droplet infection).
  • Symptoms: Persistent cough, fever, weight loss, and night sweats.
  • Prevention: BCG vaccination, avoiding contact with infected persons, and maintaining good hygiene.

3. Common Cold:

  • Causative agent: Virus (Rhinovirus).
  • Mode of transmission: Spreads through droplets from coughing or sneezing and by touching contaminated surfaces.
  • Symptoms: Runny nose, sore throat, sneezing, and cough.
  • Prevention: Frequent hand washing, avoiding touching the face, and covering the mouth and nose while coughing or sneezing.

39.Write a brief account on Pollination.

Pollination is the act of transferring pollen grains from the male anther of a flower to the female stigma. The goal of every living organism, including plants, is to create offspring for the next generation. Pollination is the first step in this process for flowering plants.

Types of Pollination:

  1. Self-Pollination: The transfer of pollen grains from the anther to the stigma of the same flower or another flower on the same plant.
  2. Cross-Pollination: The transfer of pollen grains from the anther of one flower to the stigma of a flower on another plant of the same species.

Agents of Pollination:

Pollination is carried out by various agents:

  • Wind (Anemophily): Pollen is light and non-sticky, produced in large quantities (e.g., maize, pine).
  • Water (Hydrophily): Occurs in aquatic plants (e.g., Vallisneria, Hydrilla).
  • Insects (Entomophily): Flowers are often large, colourful, fragrant, and rich in nectar to attract insects like bees and butterflies.
  • Animals (Zoophily): Birds, bats, and other animals help in pollination.

40.Draw the Structure of an Atom and Explain the position of the sub - atomic particles.

Structure of an Atom:

Structure of an Atom

Position of Sub-atomic Particles:

An atom consists of a central nucleus and surrounding electrons. The positions are as follows:

  • Nucleus: This is the dense, central core of the atom. It contains two types of sub-atomic particles:
    • Protons: They are positively charged particles.
    • Neutrons: They have no charge (they are neutral).
    The nucleus holds almost the entire mass of the atom and has an overall positive charge.
  • Electron Shells/Orbits:
    • Electrons: They are negatively charged particles that revolve around the nucleus in fixed, circular paths called orbits or shells. Electrons are very light compared to protons and neutrons. The number of electrons is equal to the number of protons in a neutral atom.

41.Differentiate Metals and Non - Metals.

Property Metals Non-Metals
Lustre They have a shiny surface (lustrous). They have a dull appearance (non-lustrous), except for iodine and graphite.
Hardness Generally hard and strong (except sodium, potassium). Generally soft (except diamond).
State Solid at room temperature (except mercury). Exist as solids, liquids, or gases at room temperature.
Malleability Can be beaten into thin sheets. Cannot be beaten into thin sheets (brittle).
Ductility Can be drawn into thin wires. Cannot be drawn into wires (non-ductile).
Conduction Good conductors of heat and electricity. Poor conductors of heat and electricity (except graphite).

42.Write about the experiment to find the Centre of Gravity of the irregularly shaped plate.

Aim: To find the centre of gravity of an irregularly shaped lamina using a plumb line.

Materials Required: Irregularly shaped lamina (cardboard), retort stand, plumb line, pin, and pencil.

Procedure:

  1. Make three small holes near the edge of the lamina and label them A, B, and C.
  2. Suspend the lamina freely from hole A using the pin from the retort stand.
  3. Hang the plumb line from the same pin and wait for it to come to rest.
  4. Draw a straight line (AD) on the lamina along the thread of the plumb line.
  5. Repeat the experiment by suspending the lamina from hole B. Draw another line (BE) along the plumb line.
  6. Again, repeat the process by suspending the lamina from hole C and draw a third line (CF).

Observation: You will observe that all three lines (AD, BE, and CF) intersect at a common point.

Conclusion: The point of intersection, G, is the centre of gravity of the irregularly shaped lamina.

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