PART - A
I Choose the correct answer. (10x1=10)
- Conversion of 7m in to cm gives ______.
- a) 70 cm
- b) 7 cm
- c) 700 cm
- d) 7000 cm
Answer: c) 700 cm - Quantity that can be measured is called ______.
- a) Physical quantity
- b) Unit
- c) measurement
- d) motion
Answer: a) Physical quantity - Unit of Speed is ______.
- a) m
- b) S
- c) Kg
- d) m/s
Answer: d) m/s - Seeds from water - melon can be removed by ______.
- a) hand - picking
- b) Filtration
- c) magnetic separation
- d) decantation
Answer: a) hand - picking - Organ of absorption is ______.
- a) root
- b) Stem
- c) leaf
- d) flower
Answer: a) root - Pond is an example of ______ ecosystem.
- a) Marine
- b) freshwater
- c) deserts
- d) mountains
Answer: b) freshwater - The study of living beings (or) organisms is called ______.
- a) Psychology
- b) Biology
- c) Zoology
- d) Botany
Answer: b) Biology - Which animal has the special organs of breathing called gills?
- a) Earthworm
- b) Fox
- c) Fish
- d) Frog
Answer: c) Fish - Scurvy is caused due to the deficiency of ______.
- a) Vitamin A
- b) Vitamin B
- c) Vitamin C
- d) Vitamin D
Answer: c) Vitamin C - Who is the father of computer?
- a) Martin Luther King
- b) Graham Bell
- c) Charlie Chaplin
- d) Charles Babbage
Answer: d) Charles Babbage
PART - B
II Answer any 15 questions (Short answer). (15x2=30)
11. Define mass.
Mass is the measure of the amount of matter contained in an object. The SI unit of mass is the kilogram (kg).
12. Name different types of motion based on the path.
The different types of motion based on the path are: Linear motion, Curvilinear motion, Circular motion, Rotatory motion, Oscillatory motion, and Irregular motion.
13. Arrange the following in the increasing order of unit: 1 metre, 1 centimetre, 1 kilometre and 1 millimetre.
1 millimetre, 1 centimetre, 1 metre, 1 kilometre.
14. Complete the analogy:
a) Kicking a ball : Contact force :: falling of leaf : Non-contact force (or Gravitational force)
b) Distance : metre :: Speed : m/s (metre per second)
15. Fill in the blanks:
a) Matter is made up of atoms.
b) Chillies are removed from upma by hand-picking method.
16. Why do we separate mixtures?
We separate mixtures to:
- Remove unwanted or harmful components.
- Obtain useful components.
- Obtain a pure substance for scientific or industrial purposes.
17. Match the following:
- Gets heated readily - Metal Pan
- Breaks easily - mud pot
- Bends readily - Plastic wire
- Can be Stretched easily - Rubber band
18. What is meant by food adulteration?
Food adulteration is the practice of adding substances to food items to lower their quality, either to increase quantity, reduce cost, or make them appear more attractive. These added substances are called adulterants.
19. Say True or false.
a) Plants can live without water. - False
b) Green plants need Sunlight. - True
20. Define the term habitat.
A habitat is the natural home or environment of a plant, animal, or other organism. It provides the organism with everything it needs to survive, such as food, water, and shelter.
21. Compare the tap root and fibrous root system.
Tap root system: It consists of a single, thick main root (tap root) that grows straight down, with smaller lateral roots branching from it. Example: Carrot, Bean.
Fibrous root system: It consists of a cluster of many thin, branching roots of similar size that grow from the base of the stem. Example: Grass, Rice.
22. List out the plants present in your school garden.
(Sample Answer) Plants that might be present in a school garden are: Rose plant, Hibiscus plant, Neem tree, Mango tree, Tulsi (Holy Basil), and Jasmine.
23. Arrange the following in Correct Sequence
i) Leaf - Stem - Root - flower
Correct Sequence: Root → Stem → Leaf → flower
ii) Transpiration - Conduction - Absorption - fixation
Correct Sequence (for water movement): Absorption → Conduction → Transpiration
24. How do birds catch their prey?
Birds use their specialized beaks and claws (talons) to catch their prey. For example, eagles have sharp, hooked beaks and powerful talons to seize and tear their prey, while ducks have broad, flat beaks to filter food from water.
25. Write the adaptive features of polar bear.
- A thick layer of fat (blubber) and a dense fur coat for insulation against the extreme cold.
- White fur for camouflage in the snow and ice.
- Large, wide paws to distribute weight and act as snowshoes, preventing them from sinking into the snow.
26. What are the body parts of a Snake?
The main body parts of a snake are the head, trunk, and tail. Snakes lack limbs but have a flexible spine, powerful muscles, and scales that aid in their movement (locomotion).
27. Complete the analogy:
i) Rice : Carbohydrates :: Pulses : Proteins
ii) Iodine : Goitre :: Iron : Anaemia
28. Define balanced diet.
A balanced diet is a diet that contains adequate amounts of all the necessary nutrients (carbohydrates, proteins, fats, vitamins, minerals, fibre, and water) required for healthy growth and activity.
29. Complete the diagram.
The diagram shows the components of Nutrients. The missing components are:
30. Name any four input devices.
Four input devices are:
- Keyboard
- Mouse
- Scanner
- Microphone
PART - C
III Answer any 4 questions. (4x5=20)
31. Explain two methods that you can use to measure the length of a curved line.
Method 1: Using a Thread
- Take a piece of thread and place a knot at one end.
- Place the knotted end at the beginning of the curved line.
- Carefully lay the thread along the curved line, ensuring it follows the path exactly.
- Mark the point on the thread where the curved line ends.
- Now, straighten the thread and measure the length from the knot to the marked point using a standard ruler. This length is the length of the curved line.
Method 2: Using a Divider
- Take a divider and open its two ends to a small, fixed distance (e.g., 1 cm).
- Place one tip of the divider at the starting point of the curved line and let the other tip fall on the line.
- Pivot the divider from the second tip and place the first tip further along the line. Repeat this process along the entire length.
- Count the number of "steps" taken by the divider.
- The length of the line is approximately the number of steps multiplied by the distance between the divider tips, plus the length of any remaining part measured with a ruler.
32. Give examples:-
- a) Linear motion: An athlete running on a straight 100m track.
- b) Curvilinear motion: A javelin thrown by an athlete.
- c) Circular motion: The tip of a fan blade when the fan is on.
- d) Oscillatory motion: The movement of a child on a swing.
- e) Irregular motion: A bee flying from flower to flower.
33. Make a list of the functions of root and stem.
Functions of the Root:
- Anchorage: It fixes the plant firmly in the soil.
- Absorption: It absorbs water and essential minerals from the soil.
- Storage: In some plants like carrots and beetroots, the root stores food.
- Conduction: It transports the absorbed water and minerals upwards to the stem.
Functions of the Stem:
- Support: It supports the branches, leaves, flowers, and fruits, holding them up to the sunlight.
- Conduction: It transports water and minerals from the roots to the leaves and other parts. It also transports food (prepared in the leaves) to all parts of the plant, including the roots.
- Storage: Some stems, like potato and ginger, are modified to store food.
- Photosynthesis: In some plants with green stems (like cacti), the stem also performs photosynthesis.
34. Differentiate between Unicellular and multicellular organisms.
| Feature | Unicellular Organisms | Multicellular Organisms |
|---|---|---|
| Number of Cells | They are made of a single cell. | They are made of many cells. |
| Body Organisation | Simple body organisation. | Complex body organisation with cells grouped into tissues, organs, and organ systems. |
| Life Processes | All life processes (like digestion, respiration, excretion) are carried out by the single cell. | Different life processes are carried out by different specialized cells and organ systems. |
| Lifespan | They generally have a short lifespan. | They generally have a longer lifespan. |
| Examples | Amoeba, Bacteria, Yeast, Paramecium. | Humans, Mango Tree, Fish, Insects. |
35. Tabulate the vitamins and their corresponding deficiency diseases.
| Vitamin | Deficiency Disease |
|---|---|
| Vitamin A | Night Blindness |
| Vitamin B1 (Thiamine) | Beriberi |
| Vitamin C | Scurvy (bleeding gums) |
| Vitamin D | Rickets (weak bones in children) |
| Vitamin E | Nervous system problems, Infertility |
| Vitamin K | Haemorrhage (Failure of blood to clot) |
36. Explain in detail about the applications of computer.
Computers are versatile machines used in almost every field of life. Some of their key applications are:
- Education: Computers are used for online learning (e-learning), conducting research, accessing digital libraries, and creating educational presentations. They make learning interactive and engaging.
- Communication: They are essential for modern communication through emails, video conferencing (e.g., Zoom, Google Meet), instant messaging, and social media, connecting people across the globe.
- Healthcare: In hospitals, computers help in maintaining patient records (EHR), diagnosing diseases through medical imaging (MRI, CT scans), monitoring patients' vital signs, and in surgical procedures.
- Business and Banking: Companies use computers for managing finances, maintaining employee records, marketing, and data analysis. In banking, they are used for online transactions, ATMs, and managing customer accounts.
- Entertainment: Computers are a primary source of entertainment for watching movies, listening to music, playing games, and creating digital art and animation.
- Science and Research: Scientists use powerful computers (supercomputers) for complex calculations, weather forecasting, space exploration, and simulating scientific experiments.
6th Science - First Term Summative Examination 2024 - Solved Question Paper
