6th Science - Term 1 Exam 2024 - Original Question Paper | Coimbatore District,

6th Science - First Term Exam 2024 - Question Paper with Solutions | Coimbatore District

Solutions

I. Choose the correct answer (8 x 1 = 8)

1. Conversion of 7m into cm gives ______.
   c) 700 cm (Since 1m = 100cm, 7m = 7 x 100 = 700 cm)
2. Motion of a body in a circle is called ______ motion.
   b) circular
3. ______ is essential to perform winnowing activity.
   d) Air
4. Seeds from water melon can be removed by ______.
   a) hand picking
5. Pond is an example of ______ ecosystem.
   b) freshwater
6. Which animal has the special organs of breathing Called gills.
   c) Fish
7. Calcium is an example for ______.
   d) minerals
8. ______ is another form of computer.
   b) Mobile

II. Fill in the blanks (5 x 1 = 5)

9. S.I unit of length is ______.
   S.I unit of length is metre.
10. A bike moving on a straight road is an example for ______ motion.
    A bike moving on a straight road is an example for linear motion.
11. Matter is made up of ______.
    Matter is made up of atoms.
12. Camel stores ______ in its hump.
    Camel stores fat in its hump.
13. Influenza is a ______ disease.
    Influenza is a viral disease.

III. Say true or false. If false correct the statement (5 x 1 = 5)

14. Length of one's chest can be measured using a metre scale.
    True.
15. To and fro motion is called oscillatory motion.
    True.
16. Air is not Compressible.
    False.
    Correct statement: Air is highly compressible.
17. Green plants need sunlight.
    True.
18. Habitat is a living or dwelling place of an organism.
    True.

IV. Match the following (5 x 1 = 5)

Question	Answer
19. Vitamin A	Night blindness
20. Desert	Dry Place
21. Photosynthesis	Leaves
22. A coconut falling from tree	Linear motion
23. Kilo	10³

V. Complete the analogy (3 x 1 = 3)

24. Solid: Definite Shape :: ______ : Shape of the vessel
    Solid: Definite Shape :: Liquid : Shape of the vessel
25. Kicking a ball: Contact force :: Falling of leaf : ______
    Kicking a ball: Contact force :: Falling of leaf : Non-contact force (Gravitational force)
26. Milk: Volume :: Vegetables : ______
    Milk: Volume :: Vegetables : Mass

VI. Answer briefly (Any seven) (7 x 2 = 14)

27. What are the two parts present in a measurement?
    The two parts present in a measurement are:

    1. A number
    2. A unit
28. Define force.
    Force is a push or a pull on an object that can change the state of rest or motion of the object.
29. Give an example for mixture and justify your answer with reason.
    Example: Lemon juice.
    Justification: It is a mixture because it contains water, sugar, salt, and lemon extract. These components are not chemically combined and can be separated by physical methods.
30. Mention few desert plants.
    Some desert plants are Cactus, Aloe vera, and Date palm.
31. Classify the plants on the basis of habitats.
    Plants are classified based on habitats into two main types:

    1. Terrestrial Plants: Plants that grow on land (e.g., Mango tree, Cactus).
    2. Aquatic Plants: Plants that grow in water (e.g., Lotus, Hydrilla).
32. What are the body parts of a snake?
    The body of a snake is divided into three parts: Head, Trunk, and Tail. They do not have limbs.
33. Why should fruits and vegetables not be washed after cutting?
    Fruits and vegetables should not be washed after cutting because it can lead to the loss of water-soluble vitamins (like Vitamin C and B-complex) and minerals present in them.
34. Arrange the following in correct sequence.

    a) Leaf - Stem - Root - Flower
    Correct Sequence: Root → Stem → Leaf → Flower

    b) Transpiration - Conduction - Absorption - Fixation
    Correct Sequence: Fixation → Absorption → Conduction → Transpiration

35. Name any four input devices.
    Four input devices are: Keyboard, Mouse, Scanner, and Microphone.

VII. Answer in detail (4 x 5 = 20)

36. a) While measuring the length of a sharpened pencil, reading of the scale at one end is 2.0 cm and at the other end is 12.1 cm. What is the length of the pencil?
    Reading at the other end = 12.1 cm
    Reading at one end = 2.0 cm
    Length of the pencil = Reading at the other end - Reading at one end
    Length of the pencil = 12.1 cm - 2.0 cm = 10.1 cm
    b) Fill in the following chart.

    Property	Basic unit	Instrument used for measuring
    Length	metre (m)	Measuring tape / Metre scale
    Mass	kilogram (kg)	Beam balance / Electronic balance
    Time	second (s)	Stopwatch / Clock

    (OR)

    Give examples.
    1. Linear motion: A car moving on a straight road.
    2. Curvilinear motion: A ball thrown in an arc.
    3. Circular motion: The motion of the blades of a fan.
    4. Oscillatory motion: The motion of a pendulum in a clock.
    5. Irregular motion: The motion of a flying butterfly.
37. a) Define the term matter.
    Matter is defined as anything that has mass and occupies space. It is made up of tiny particles called atoms.
    b) Give the main difference between a pure substance and an impure substance.

    Pure Substance	Impure Substance (Mixture)
    Made of only one kind of particle (atoms or molecules).	Consists of two or more substances mixed physically.
    Has a fixed melting and boiling point.	Does not have a fixed melting or boiling point.

    (OR)

    Distinguish the properties of solid, liquid and gas.

    Property	Solid	Liquid	Gas
    Shape	Definite shape	Takes the shape of the container	No definite shape
    Volume	Definite volume	Definite volume	Fills the entire container
    Compressibility	Negligible	Slightly compressible	Highly compressible
    Arrangement of particles	Tightly packed	Loosely packed	Very far apart

38. Make a list of functions of root and stem.
    Functions of Root:

    • Fixation: Anchors the plant firmly in the soil.
    • Absorption: Absorbs water and minerals from the soil.
    • Storage: Some roots store food (e.g., Carrot, Radish).

    Functions of Stem:

    • Support: Provides support to branches, leaves, flowers, and fruits.
    • Conduction: Transports water and minerals from the roots to the upper parts of the plant.
    • Transport: Transports food prepared by the leaves to other parts of the plant.
    • Storage: Some stems store food (e.g., Potato, Sugarcane).

    (OR)

    Describe the various features that help camel dwell well in the desert.
    • Long Eyelashes: Protect the eyes from blowing sand.
    • Closable Nostrils: Prevent sand from entering the nose.
    • Hump: Stores fat, which can be metabolized for energy and water.
    • Padded Feet: Broad, flat feet prevent the camel from sinking into the sand.
    • Thick Lips: Allow the camel to eat thorny desert plants without injury.
    • Water Conservation: Can drink a large amount of water at once and excretes very little urine to conserve water.
39. Tabulate the vitamins and the corresponding deficiency diseases.

    Vitamin	Deficiency Disease
    Vitamin A	Night Blindness
    Vitamin B1 (Thiamine)	Beriberi
    Vitamin C (Ascorbic Acid)	Scurvy
    Vitamin D	Rickets
    Vitamin E	Sterility
    Vitamin K	Haemorrhage (Excessive bleeding)

    (OR)

    List applications of a computer.
    Applications of a computer include:

    • Education: Used for online classes, research, and e-learning.
    • Communication: Facilitates email, video conferencing, and social media.
    • Entertainment: Used for playing games, watching movies, and listening to music.
    • Banking: Essential for ATMs, online banking, and managing financial transactions.
    • Healthcare: Used for maintaining patient records, medical imaging (X-rays, CT scans), and research.
    • Business: Used for data management, accounting, and marketing.

Original Question Paper

Class: 6

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

SCIENCE

Time Allowed: 2.00 Hours | Max. Marks: 60

PART - I

I. Choose the correct answer. (10x1=10)

1. Quantity that can be measured is called __________.
   • a) Physical quantity
   • b) Measurement
   • c) Unit
   • d) Motion
   a) Physical quantity
2. Conversion of 7 m into cm gives --------
   • a) 70 cm
   • b) 7 cm
   • c) 700 cm
   • d) 7000 cm
   c) 700 cm
3. Unit of speed is __________.
   • a) m
   • b) s
   • c) kg
   • d) m/s
   d) m/s
4. __________ is essential to perform winnowing activity.
   • a) Rain
   • b) Soil
   • c) Water
   • d) Air
   d) Air
5. __________ is not made of Matter.
   • a) Gold Ring
   • b) Iron Nail
   • c) Light Ray
   • d) Oil Drop
   c) Light Ray
6. Organ of absorption is __________.
   • a) Root
   • b) Stem
   • c) Leaf
   • d) Flower
   a) Root
7. Lizards breath through their __________.
   • a) Skin
   • b) Gills
   • c) Lungs
   • d) Trachea
   c) Lungs
8. Calcium is an example for __________.
   • a) Carbohydrate
   • b) Fat
   • c) Protein
   • d) Minerals
   d) Minerals
9. Scurvy is caused due to the deficiency of __________.
   • a) Vitamin A
   • b) Vitamin B
   • c) Vitamin C
   • d) Vitamin D
   c) Vitamin C
10. Who is the Father of Computer?
    • a) Martin Luthur King
    • b) Graham Bell
    • c) Charlie Chaplin
    • d) Charles Babbage
    d) Charles Babbage

II. Fill in the blanks: (5x1=5)

11. SI unit of Length is
    metre
    .
12. Gravitational force is a
    non-contact
    Force.
13. Matter is made up of
    atoms
    .
14. Primary organs of Photosynthesis are
    leaves
    .
15. Camel stores
    fat
    in its Humps.

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

Question	Correct Match
16. SI Unit of time	Second
17. Mountain	Himalayas
18. Fibrous root	Monocot
19. Bends readily	Plastic Wire
20. Desert	Dry place

PART - II

IV. Answer any ten of the following questions. (10x2=20)

21. Define Measurement

    Measurement is the comparison of an unknown quantity with a known standard quantity.

22. Define Force.

    A force is a push or a pull upon an object resulting from the object's interaction with another object.

23. Why do We Separate Mixture?

    We separate mixtures to:
    1. Remove unwanted or harmful components.
    2. Obtain useful components.
    3. Obtain a highly pure substance.

24. Define - Sedimentation.

    Sedimentation is the process in which heavier, insoluble solid particles in a liquid mixture settle down at the bottom of the container.

25. Complete the Analogy.

    i) Sugar : Beam balance ;; Lime juice :

    Measuring Jar / Cylinder

    ii) Milk : Volume ;; Vegetables : Mass / Weight

26. State True or False. If false correct the Statement.

    a) To and fro Motion called Oscillatory Motion.
    

    True.

    b) Robots will replace Human in Future.
    False. Correction: Robots will assist humans in many tasks, but they will not completely replace humans.

27. Draw the diagram of Leaf and Label the Parts.

    The main parts of a leaf to be labeled are:

    • Lamina (Leaf Blade): The broad, flat part of the leaf.
    • Petiole: The stalk that connects the leaf blade to the stem.
    • Midrib: The central, thick vein running through the lamina.
    • Veins: Network of tubes that branch out from the midrib.
    • Apex: The tip of the leaf.
    

28. Mention the Desert Plants.

    Examples of desert plants are Cactus, Date Palm, and Acacia.

29. How do Birds catch their Prey?

    Birds catch their prey using their beaks and sharp claws, which are also called talons (especially in birds of prey like eagles).

30. Name the locomotory Organ of Amoeba?

    The locomotory organ of an Amoeba is called Pseudopodia (false feet).

31. Define Balanced Diet?

    A balanced diet is a diet that contains all the essential nutrients like carbohydrates, proteins, fats, vitamins, and minerals in the correct proportions required for the proper growth and functioning of the body.

32. Mention any two viral diseases?

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

33. Name any four Input Devices.

    Four input devices are: Keyboard, Mouse, Scanner, and Microphone.

V. Answer any four Questions: (4x5=20)

34. The distance between two places is 43.65 km. convert it in to metre and cm.

    Given: Distance = 43.65 km

    Conversion to metres (m):
    We know that 1 km = 1000 m.
    So, 43.65 km = 43.65 × 1000 m = 43,650 m.

    Conversion to centimetres (cm):
    We know that 1 m = 100 cm.
    So, 43,650 m = 43,650 × 100 cm = 4,365,000 cm.

    Final Answer: 43,650 m and 4,365,000 cm.

35. What is Motion? Classify different types of Motion with example?

    Motion: An object is said to be in motion if it changes its position with respect to time and its surroundings.

    Types 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 movement of the blades of a fan.
    • Oscillatory Motion: Repetitive to and fro motion about a mean position. Example: The swinging of a pendulum.
    • Random Motion: Motion that is irregular and unpredictable. Example: A butterfly flying in a garden.
36. What is meant by Food Adulteration?

    Food adulteration is the process of adding unwanted, inferior, or harmful substances to food items to increase their quantity or reduce costs. This practice lowers the quality of the food and can be harmful to health.

    Examples include adding water to milk, mixing papaya seeds in black pepper, or adding artificial colors to sweets.

37. Make a list of the Functions of Root and Stem.

    Functions of Root:

    • Anchorage: It firmly anchors the plant to the soil.
    • Absorption: It absorbs water and essential minerals from the soil.
    • Storage: In some plants like carrots and beetroots, roots store food.

    Functions of Stem:

    • Support: It supports the branches, leaves, flowers, and fruits.
    • Conduction: It transports water and minerals from the roots to the leaves and food from the leaves to other parts of the plant.
    • Storage: In some plants like potato and sugarcane, stems store food.
38. Describe the Various Features which help Camel Dwell in the Desert.

    Camels have several adaptations to survive in the desert:

    • Hump: Stores fat, which can be broken down for energy and water.
    • Long Eyelashes: Protect the eyes from blowing sand.
    • Closable Nostrils: Can be closed to prevent sand from entering during sandstorms.
    • Padded Feet: Wide, leathery pads on their feet prevent them from sinking into the soft sand.
    • Water Conservation: They can drink a large amount of water at once and conserve it by excreting very concentrated urine and dry dung.
    • Thick Lips: Allow them to eat thorny desert plants without injury.
39. Tabulate the vitamins and their corresponding deficiency diseases.

    Vitamin	Deficiency Disease
    Vitamin A	Night Blindness
    Vitamin B1	Beriberi
    Vitamin C	Scurvy
    Vitamin D	Rickets
    Vitamin K	Excessive bleeding (delay in blood clotting)

6th Science - Term 1 Exam 2024 - Original Question Paper | Chennai District

6th Science - Term 1 Exam 2024 - Original Question Paper | Virudhunagar District

6th Standard Science - Summative Assessment (Sept 2024) Solutions

Here are the detailed solutions for the Virudhunagar District, Standard 6 Science, Summative Assessment held in September 2024. This will help students to review their answers and understand the concepts better.

I. Choose the correct answer:

5x1=5

1) Which among the following is an oscillatory motion?

• a) Rotation of the earth about its axis.
• b) Revolution of the moon about the earth.
• c) To and fro movement of a vibrating string.
• d) All of these

2) Seeds from water-melon can be removed by ______

• a) hand picking
• b) filteration
• c) magnetic separation
• d) decantation

3) Organ of absorption is ______

• a) root
• b) stem
• c) leaf
• d) flower

4) Which animal has the special organs of breathing called gills?

• a) Earthworm
• b) fox
• c) fish
• d) frog

5) Bacteria are very small ______ micro organism.

• a) Prokaryotic
• b) Eukaryotic
• c) Protozoa
• d) Acellular

II. Fill in the blanks:

5x1=5

6) SI unit of length is metre (m).

7) In solids the space between the particles less than in liquids / gases.

8) Primary organs of photosynthesis are leaves.

9) Amoeba moves with the help of pseudopodia (false feet).

10) Iodine deficiency leads to goitre.

III. Match it:

5x1=5

Question	Correct Match
a) Nano	10⁻⁹
b) Bends readily	Rubber band
c) Can be streched easily	Plastic wire
d) Mountain	Himalayas
e) Stem	Branches

IV. Analogy:

5x1=5

12) Sugar : Beam balance

Lime Juice : Measuring Jar / Measuring Cylinder

13) Kicking a ball : Contact force

Falling of leaves : Non-contact force (Gravitational force)

14) Iron sulphur mixture : Magnetic separation

Mustard seeds from Urad-dhal : Rolling

15) Solid : Definite shape

Liquid : Shape of vessel

16) Solid : Rigidity

Gas : Compressibility / Fluidity

V. State True or False. If false correct the statement:

5x1=5

17) Ten millimetre makes one centimetre.

True.

18) Air is not compressible.

False.

Correct statement: Air is highly compressible.

19) Plants can live without waterAmoeba is a unicellular organism and its move with Pseudopodia.

True.

(Assuming the statement is about Amoeba, as it is repeated in the next question. The OCR text seems to have merged two separate statements. The statement "Amoeba is a unicellular organism and its move with Pseudopodia" is True.)

20) Amoeba is a unicellular organism and its moves with pseudopodia.

True.

21) Iron helps in the formation of Haemoglobin.

True.

VI. Answer very briefly: (any ten only)

10x2=20

[Question No. 24 is compulsory]

22) Define measurement.

Measurement is the comparison of an unknown quantity with some known quantity of the same kind. The known fixed quantity is called a unit.

23) Define mass.

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

24) The distance between two places is 43.65 km. Convert it into metre and cm.

To metre: 1 km = 1000 m. So, 43.65 km = 43.65 × 1000 = 43,650 m.
To centimetre: 1 m = 100 cm. So, 43,650 m = 43,650 × 100 = 43,65,000 cm.

25) Define force.

A force is a push or a pull upon an object resulting from the object's interaction with another object. It can change the state of rest or motion of an object.

26) Name different types of motion.

Linear motion, Circular motion, Rotational motion, Oscillatory motion, Random motion, and Periodic motion.

27) Differentiate between rotational and curvilinear motion.

Rotational Motion: An object moves about a fixed axis without changing its position. Example: A spinning top.
Curvilinear Motion: An object moves along a curved path. Example: A stone thrown in the air.

28) Why do we separate mixture?

We separate mixtures to: (i) remove undesirable or harmful components, (ii) obtain useful components, and (iii) obtain a substance in a highly pure form.

29) Define sedimentation.

Sedimentation is the process in which heavier, insoluble solid particles in a liquid mixture settle down at the bottom of the container when left undisturbed.

30) Give the main difference between a pure substance and impure substance.

A pure substance consists of only one type of particle (atom or molecule) and has fixed physical properties. An impure substance (mixture) consists of two or more types of particles and does not have fixed properties.

31) Mention few desert plants.

Cactus, Date Palm, Acacia, Prickly Pear.

32) Define the term habitat.

A habitat is a natural home or environment of an animal, plant, or other organism. It provides the organism with food, water, shelter, and space.

33) Where can we see camels in India?

Camels in India are primarily found in the Thar Desert region of Rajasthan.

34) Name the locomotory organ of an Amoeba.

The locomotory organ of an Amoeba is the pseudopodia (false feet).

35) What are the body parts of snake?

A snake's body is typically divided into the head, trunk, and tail. They move using their flexible backbone and broad belly scales.

36) Which structure helps the birds to change its direction while flying in air?

The tail of the bird helps it to steer and change direction while flying.

37) Differentiate between Carbohydrate and Protein.

Carbohydrates: They are energy-giving foods. Sources include rice, wheat, and potatoes.
Proteins: They are body-building foods essential for growth and repair. Sources include pulses, eggs, and milk.

38) Define balanced diet.

A balanced diet is a diet that contains all the essential nutrients like carbohydrates, proteins, fats, vitamins, and minerals in adequate and correct proportions.

39) Why should fruits and vegetables washed after cutting?

Fruits and vegetables should be washed before cutting. Washing them after cutting can lead to the loss of water-soluble vitamins (like Vitamin C and B-complex) from their cut surfaces.

40) What is computer?

A computer is an electronic device that manipulates information, or data. It has the ability to store, retrieve, and process data according to a set of instructions.

VII. Answer in detail: (any three only)

3x5=15

41) Explain two methods that you can use to measure the length of a curved line.

Method 1: Using a String
1. Take a string and place it along the curved line, starting from one end. 2. Carefully trace the path of the curved line with the string until you reach the other end. 3. Mark the points on the string that correspond to the start and end of the line. 4. Straighten the string and measure the length between the two marks using a standard ruler. This length gives the length of the curved line.

Method 2: Using a Divider
1. Take a divider and open its two arms to a small, convenient fixed distance (e.g., 1 cm). 2. Place one tip of the divider at the starting point of the curved line and let the other tip fall on the line. 3. Without changing the distance, move the first tip to the position of the second tip and repeat this process along the entire line. 4. Count the number of steps. The length of the line is approximately (number of steps × distance between tips) + length of the remaining part (which can be measured with a ruler).

42) Classify different types of motions with example.

The different types of motion are:

• Linear Motion: Motion along a straight line. Example: A car moving on a straight road.
• Circular Motion: Motion of an object along a circular path. Example: The tip of the hands of a clock.
• Rotational Motion: The movement of an object about its own axis. Example: The rotation of the Earth on its axis.
• Oscillatory Motion: A to and fro motion of an object from its mean position. Example: The movement of a simple pendulum.
• Periodic Motion: Motion that repeats itself after a regular interval of time. Example: The revolution of the Moon around the Earth.
• Random Motion: Motion that is irregular and unpredictable. Example: The movement of a flying butterfly.

43) Make a list of the function of root and stem.

Functions of the Root:

• Anchorage: It fixes the plant firmly to the soil, providing support.
• Absorption: It absorbs water and essential minerals from the soil.
• Conduction: It transports the absorbed water and minerals up to the stem.
• Storage: In some plants like carrots and beetroots, roots store food.

Functions of the Stem:

• Support: It supports the branches, leaves, flowers, and fruits, holding them up to receive sunlight.
• Conduction: It transports water and minerals from the roots to the leaves, and transports food prepared by the leaves to all other parts of the plant.
• Food Storage: Stems of some plants like sugarcane and potato store food.
• Photosynthesis: Young, green stems contain chlorophyll and can perform photosynthesis.

44) Describe the various features which help Camel dwell well in the desert.

Camels have several adaptations to survive in the desert:

• Hump: They store fat in their hump, which can be metabolized for energy and water when food is scarce.
• Long Eyelashes and Closable Nostrils: These protect their eyes and nose from blowing sand.
• Thick Lips: Allow them to eat thorny desert plants without injury.
• Large, Padded Feet: Their wide, flat feet spread their weight and prevent them from sinking into the sand.
• Water Conservation: They can drink a large amount of water at once and conserve it efficiently. They excrete concentrated urine and dry dung to minimize water loss.
• Body Temperature Regulation: They can tolerate large fluctuations in their body temperature, which helps them conserve water by reducing sweating.

45) Tabulate the vitamins and their corresponding deficiency diseases.

Vitamin	Deficiency Disease
Vitamin A	Night Blindness
Vitamin B1	Beri-Beri
Vitamin C	Scurvy (bleeding gums)
Vitamin D	Rickets (weak bones in children)
Vitamin E	Sterility (Infertility)
Vitamin K	Haemorrhage (Failure of blood to clot)