Kerala Syllabus Class 5 Basic Science Model Question Paper Set 3

For better subject understanding, Class 5 Basic Science Question Paper Pdf Set 3 offer useful practice.

Kerala Syllabus 5th Standard Basic Science Model Question Paper Set 3

Times : 2 1/4 hour
Total Score: 60

Instructions:

1. 15-minute cool-off time is allotted for reading and understanding the activities.
2. Answer any six questions.

Question 1.
Sunita Williams is an American astronaut. She is known for her achievements in space exploration and for conducting important scientific experiments during her time in space.
a) ……. is a laboratory set up in space.
Answer:
Space station

b) Write any 4 problems faced by the people who reach the space station for experiments.
Answer:

1. No air
2. Weight is not felt (Floating around in space)
3. No water
4. Trouble in breathing
5. No medium for communication

c) Write any 4 special arrangements needed to overcome such problems.
Answer:
To protect themselves from harsh conditions, astronauts wear space suits.

1. Special devices are used for communication.
2. Food and water management devices.
3. Emergency equipments.

Question 2.
Think about animals and their homes.
a) What type of place do snakes like to live in?
Answer:
Cool, hidden places like holes or under rocks.

b) Name two animals that live in groups and help each other.
Answer:
Ants and bees

c) Snakes are useful to us. How?
Answer:
Snakes destroy rats and other creatures, which are harmful to crops.

d) Label the body parts of a bird.

Answer:
Parts of a bird labelled:
a – Eye,
b – Beak,
c – feather,
d – tail.

Question 3.
A) Find the odd one and mention the reason.
Sunlight, wind, waves, petroleum refinery
Answer:
Petroleum refinery, others are non-conventional energy sources.

B) How does coal, petroleum, and natural gas are produced?
Answer:
Coal was formed by various changes that took place in plants that lay buried under the earth’s surface for millions of years due to natural calamities. Petroleum and natural gas were formed from the dead remains of microorganisms present in the sea.

C) What are the main uses of petroleum?
Answer:
Petroleum is mainly used to produce petrol, diesel, kerosene, coal tar and LPG. In addition, it is used in the manufacture of many products like pesticides, plastics and medicines

4. This question has two parts 4 (A) and 4 (B). Answer either 4 (A) or 4 (B) completely.

Question 4.
A. a) Arrange the organisms given below correctly to form a food chain.
Fox, Hen, Worm, Vulture, Plant
Answer:
Plant → Worm → Hen → Fox → Vulture A

b) Can you draw a simple food chain?
Answer:
Plant → Rabbit → Fox

c) What happens to the other organisms in the food chain if one organism disappears? Explain with the help of the food chain you have drawn.
Answer:
Let us say the rabbit disappears from this food chain. Flere is what would happen:

1. The fox would have no food source and its population would decrease or disappear altogether.
2. The grass population might increase due to lack of herbivores eating it. This could lead to competition for resources among the remaining grass plants.
3. Other organisms that might have eaten the rabbit, like some tigers could also be affected.

OR
B. a) Examine the food chains given below and write down the correct one.
A. Grass → Tiger → Cow
B. Grass → Grasshopper → Frog → Snake
C. Grass → Grasshopper → Rabbit → Fox
D. Grass → Leopard → Frog → Rabbit → Eagle
Answer:
B. Grass → Grasshopper → Frog → Snake

b) Explain the change that will happen in the food chain when the number of Indian rat snake decreases.
Paddy → Rat → Rat snake → Eagle
Answer:
If the number of Indian rat snake decreases, the rat population will increase tremendously without the predator species. And the eagle population will decrease without their prey.

c) Prepare a food web including the organisms given below.
Frog, Grass, Grasshopper, Worm, Hen, Fox, Vulture, Snake
Answer:

Question 5.
A) Complete the table suitably related to dissolving property.

Solute	a)	b)
c)	Water	Soda water
Sugar	Water	d)
e)	f)	Copper sulphate solution

Answer:
a) Solvent
b) Solution
c) Carbon dioxide
d) Sugar solution
e) Copper sulphate
f) Water

B) Three statements related to water are given below. Pick out the correct statements from them.
• The major portion of water present on the Earth is pure.
• Water is called the universal solvent due to its dissolving property.
• Water vapour is the gaseous state of water
Answer:

1. Water is called the universal solvent due to its dissolving property.
2. Water vapour is the gaseous state of water.

C) Examine the statement and reason given below and write the correct option:
Statement (S): The rate of vaporization of a substance increases as it is heated.
Reason (R): Vaporization occurs at all temperatures.
a) Statement is correct, but the reason is wrong.
b) Statement is wrong, the reason is correct.
c) Statement and reason are correct.
d) Statement and reason are wrong.
Answer:
c) Statement and reason are correct.

6. This question has two parts 6 (A) and 6 (B). Answer either 6 (A) or 6 (B) completely.

Question 6.
A. a) Which all creatures that have the following characteristics are found around you?
1) Live in water, have scales, and have fins that help them to move in water:
2) Have pinna, feed milk to their young ones:
Answer:
l) Fish.
2) Mammals

b) Even though domestic animals are helpful to us, sometimes humans get diseases from them. List any four such diseases.
Answer:
Rabies, Rat fever, Bird flu, Anthrax, Brucella

c) What precautions should we take while interacting with domestic animals?
Answer:
Precautions while interacting with domestic animals:

1. Vaccinate domestic animals
2. Pets should always be kept clean
3. It is good to trim and groom the nails and hairs of pets
4. Keep the pet’s cage clean

OR
B. You already know about extinct animals and they disappeared.
a) Name one animal that is now extinct.
Answer:
Dinosaur

b) What can people do to protect animals still living today?
Answer:
People can protect animals by conserving their habitats and preventing pollution.

c) What are the reasons for the extinction of some creatures that once existed on Earth?
Answer:
Reasons for the extinction of creatures that existed on Earth:

1. Extreme cold
2. Drought
3. Meteorite fall
4. Epidemics
5. Volcanic eruptions
6. Destroying their habitats