Kerala Syllabus Class 5 Basic Science Model Question Paper Set 5

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

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

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.
Fuels are substances that generate heat when burned.
a) The firewood does not always bum well in the hearth. What can be done to make the firewood bum well?
Answer:

1. Blowing air using a pipe
2. Use dry wood
3. Split the wood
4. Air flow

b) Write an experiment that shows air is necessary for burning.
Answer:
Experiment:
Aim: Is air necessary for burning?
Materials required: 2 Candles, Match box, A glass
Procedure: Take two candles of the same size. Light both the candles. Cover one of them with a glass.

Observe both the candles.
Observation: Candle without the glass: This will continue to burn normally because it gets enough oxygen from the air. Candle under the glass: This will start to flicker and eventually go out. This happens because the glass limits the oxygen supply, which the candle needs to keep burning.

Conclusion: The experiment shows that candles need oxygen to burn. The covered candle goes out because it lacks oxygen, while the uncovered candle keeps burning.

c) Which of the following statements about fuel usage is a reason for the other two?
Statements:
1. Fuels are used to generate electricity in power plants.
2. Fuels are used in agriculture to power machinery and transport crops.
3. Fuels like coal, natural gas, and oil are used for various purposes, including power generation, transportation, and agriculture.
Answer:
Statement 3 is the reason

2. This question has two parts 2 (A) and 2 (B). Answer either 2 (A) or 2 (B) completely.

Question 2.
A a) The change in state of water is illustrated below. Complete the flowchart by adding appropriate words.

Answer:

b) Examine the table and find out the correct pairs from the options.

A	B
a) Universal solvent	1) Check dam
b) Water storage	2) Chemical fertilisers
c) Water pollution	3) Clouds
d) Water sources	4) Solutions

(i) a)- 3, b) – 2, c) – 4, d) – 1
(ii) a) – 4, b) – 1, c) – 2, d) – 3
(iii) a) – 3, b) – 1, c) – 4, d) – 2
(iv) a) – 4, b) – 2, c) – 3, d) – 1
Answer:

A	B
a) Universal solvent	4) Solutions
b) Water storage	1) Check dam
c) Water pollution	2) Chemical fertilisers
d) Water sources	3) Clouds

c) What is vapourisation? What happens to the rate of vapourisation as a substance heats up?
Answer:
The spreading of small particles of liquid from its surface to the surroundings is called vapourisation. The rate of vaporisation increases as the substance heats up.

B. Examine the test report on water quality made on three different sources. Analyse the table and write your findings.

Property	River	Pond	Well
Colour	Muddy	Muddy	Clear
Odour	Foul odour	Foul odour	No odour
Organic waste	Yes	Yes	No
Chemical waste	Yes	Yes	No

a) Which source of water is the safest to drink?
Answer:
Well

b) Can we make river and pond water potable? How?
Answer:
Yes, Disinfection in water treatment plants can make them safe to drink.

c) What can we do to prevent pollution of water sources?
Answer:
To prevent pollution of water sources:

1. Avoid dumping wastes into the waterbodies.
2. Avoid dumping factory waste into the waterbodies.
3. Make sure that fertilisers and pesticides do not flow into the water bodies.
4. Use toilets and other sanitation facilities.

d) What will happen to the water level in the wells of the nearby houses when water bodies dry up?
Answer:
When water bodies dry up, the water level lowers in the nearby wells

Question 3.
a) What does the figure below represent?

Answer:
The figure represents the Solar system

b) What is an orbit?
Answer:
The path of the celestial bodies is called the orbit

c) Describe the movement of the Earth and moon in the solar system.
Answer:
The Earth revolves around the sun, and the moon revolves around the Earth.

d) What are the features of the moon?
Answer:
Features of moon:

1. Spherical shape
2. Non-luminous body
3. Revolves around the Earth
4. Rotates on its own axis.

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

Question 4.
A. There are diseases other than communicable diseases,
a) Examine and complete the table given below.

Communicable diseases	_______
Dengue fever	Cancer –
Jaundice	Alzheimer’s disease
_______	_______
_______	_______
_______	_______
_______	_______

Answer:

Communicable diseases	Non-communicable diseases
Dengue fever	Cancer
Jaundice	Diabetes
Common cold	Asthma
Malaria	Hypertension
Cholera	Blood pressure
Covid	Alzheimer’s disease

b) Not all microorganisms are pathogens. All the microorganisms are not harmful; some of them are useful in many ways. Mention any two uses of microorganisms.
Answer:
Uses of microorganisms:
• Present in our body and helps in the digestion and absorption of food.
• Yeast is used for making bread.
• Bacteria helps in the curdling of milk.

c) What causes communicable diseases?
Answer:
Germs like bacteria and viruses cause communicable diseases.

B. a) We can take care to prevent diseases by maintaining personal hygiene. Write four other measures to be taken care of to prevent diseases.
Answer:
Measures to be taken care of to prevent diseases:

1. Vaccination: Getting vaccinated is one of the most effective ways to prevent infectious diseases
2. Environmental Sanitation and Food Safety: Many diseases are transmitted through contaminated food, water, and surfaces.
3. Vector Control: Some diseases are spread by vectors, such as mosquitoes, ticks, and other animals.
4. Maintaining a Healthy Lifestyle: A strong immune system is your body’s best defense against illness.

b) Examine the statement and reason given below and write the correct option.
Statement – Bud rot spreads quickly to coconut trees.
Reason – Plants also affect infections like animals.
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.

c) Why do we take vaccines? How does it protect us from diseases?
Answer:
We take vaccines to protect us from diseases. Vaccinations provide artificial immunity to the body against diseases.

Question 5.
a) Classify the following creatures into groups on the basis of the position of their eyes.
Rabbits, lions, Owls, Tigers, Deers, Hawks, Monkeys, Mice Frogs
Answer:

Those with eyes in front of the head	Those with eyes on the sides of the head
Lions	Rabbits
Owls	Deers
Tigers	Mice
Hawks	Frogs
Monkeys

b) URGENT HEALTH ALERT: CONJUNCTIVITIS OUTBREAK SPREADS RAPIDLY
Health officials are urging residents to take immediate precautions as a significant increase in conjunctivitis, commonly known as “pink eye,” has been reported across the city. Hospitals and clinics are seeing a surge in cases, raising concerns about a potential public health issue.
Have you seen the newspaper report? What are the symptoms of conjunctivitis?
Answer:
b) Symptoms of conjunctivitis:
• Pain in the eye
• The whites of your eye may appear pink or red
• Eyes may feel itchy or irritated
• Burning sensation in your eyes
• Eyelids may become swollen

c) How does the eye position of different animals help them in their environment?
Answer:
Animals with eyes in front can better focus and measure distance, which aids in hunting. Animals with eyes on the sides have a wider field of view to detect predators.

Question 6.
A seed is a structure that carries a baby plant inside. Germination is the process by which seeds sprout to form a new plant.
a) Besides water, what two other factors are essential for a seed to germinate?
Answer:
In addition to water, a seed needs air and a suitable temperature to germinate.

b) Identify the method of cultivation shown in the picture given below. Explain.

Answer:
Hydroponics. It is the method of growing plants without soil. In this method of cultivation, plants are grown in a nutrient solution instead of soil.

c) The characteristics of a plant fruit are given.
• The fleshy part
• Smells good
• Attractive colour
What is the benefit to this plant by having these characteristics?
Answer:
These characteristics are the result of plants that are seed-dispersed,by other organisms (birds, bats, etc.). These characteristics are helpful in attracting these creatures.