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 A	Night Blindness
Vitamin B	Beri-Beri
Vitamin C	Scurvy
Vitamin D	Rickets
Vitamin E	Sterility
Vitamin K	Haemorrhage (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).