Kerala Syllabus Class 6 Basic Science Model Question Paper Set 3

To reduce exam fear, Class 6 Basic Science Question Paper Kerala Syllabus Set 3 provide good practice.

Kerala Syllabus 6th Standard Basic Science Model Question Paper Set 3

Times : 2 hours 15 minutes
Total Score: 60

Instructions:

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

Question 1.
Observe the picture.
a) Write the name and function of the parts labelled in the figure

Answer:
i) Skull: Protects the brain from injury.
ii) Ribs cage: Protects internal organs such as the heart and lungs.

b) The movable bone in the skull ________
Answer:
Lower jawbone

c) Understand the statement given below and choose the correct reason.
Statement: Knee consist of a hinge joint.
Reason :
i)Can be moved in only one direction
ii) We can’t move it
iii) Can be moved in both directions
iv) Can be moved in many directions

A. Only i is correct.
B. Only iii is correct.
C. Only iv is correct.
D. i and iv are correct.
Answer:
A. Only i is correct.

Question 2.
a) Categorise the following mixtures into homogeneous mixtures and heterogeneous mixtures.
Salt solution, Gold jewels, Pickle powder, Ayurvedic medicines, Vinegar, Washing powder.
Answer:
Homogeneous mixtures: Salt solution, Gold jewels, Vinegar. Heterogeneous mixtures: Pickle powder, Ayurvedic medicines, Washing powder.

b) Air is said to be a mixture. Why?
Answer:
Air has more than one substance, such as nitrogen, oxygen, carbon dioxide, etc and is said to be a mixture.

c) 4 statements about mixtures are given below. Which are the correct statements?
i) Buttermilk is a homogeneous mixture.
ii) Sugar solution is a homogeneous mixture.
iii) All mixtures are solutions.
iv) Ayurvedic medicine is a homogeneous mixture.

(A) Only Statement ii is correct.
(B) Statements iii and iv are correct.
(C) Statements i and iv are correct.
(D) Statements i and ii are correct.
Answer:
(A) Only Statement ii is correct.

Question 3.
The situations related to motion are given below. Observe them
• Motion of the blade when the mixer operates.
• Motion of the leather membrane when the drum is beaten.
• Movement of the lift.
• Movement of the tip of the needle in the clock.

a) Find out the motion that takes place in each situation,
Answer:
Motion of the blade when the mixer operates: Circular motion. Motion of the leather membrane when the drum is beaten – Vibration Movement of the lift – Linear motion. Movement of the tip of the needle in the clock – Circular motion

b) What is the difference between rotation and circular motion?
Answer:
Rotational motion is the movement of objects about their own axis. Circular motion is the motion of objects in a circular path.

c) Three statements based on force are given below. Write down the correct option
i) As force increases, the speed increases.
ii) When football is kicked with more force, the ball moves more slowly.
iii) As the force increases, the speed decreases.

A) i and ii are correct
B) Only i is correct
C) Only iii is correct.
D) i and iii are correct
Answer:
B. Only i is correct.

Question 4 Contains two parts 4 (A) and 4 (B). Write any one from 4 (A) or 4 (B) completely. 4(A)

Question 4.
Anu has a weight of 55 kg and a height of 163 cm, and Manu weighs 25 kg and has a height of 120 cm.

a) Give the method used to check the growth?
Answer:
a) One of the methods to check growth is Body Mass Index (BMI).
BMI = \(\frac{\text { Weight }(\mathrm{kg})}{\text { Height }(\text { metre }) \times \text { Height }(\text { metre })}\)

Child	Weight (kg)	Height (m)	Calculation	BMI
Anu	55 kg	1.63	55 ÷ (1.63)2	20.70
Manu	25 kg	1.20	25 ÷ (1.20)2	17.36

b) Which of these children has proper growth?
Answer:
b) Anu

c) Write about the physical condition of Manu?
Answer:
c) Underweight

d) What is the solution for underweight?
Answer:
d) To overcome underweight:
• Eat nutritious and balanced food regularly.
• Include milk, eggs, pulses, fruits, vegetables, nuts, etc.

(B) a) Complete the table given below.

Condition	Cause
Diabetes	(i)
High Blood Pressure	Excess salt intake
Cholesterol	(ii)

Answer:
i) High intake of sugar and Lack of exercise
ii) Eating too much fried & fatty food

b) Choose the correct statement from the options given below.
A. Insulin controls the sugar level in the blood.
B. HDL is bad cholesterol.
C. High BP can be controlled by reducing salt intake.
D. Fried foods help increase good cholesterol.
Answer:
A and C

c) Name the two types of cholesterol. Mention two ways to increase good cholesterol (HDL).
Answer:
Good cholesterol (HDL) and Bad cholesterol (LDL).
. Regular exercise.
. Eating foods like sardines, mackerel, leafy vegetables, pulses, and walnuts.
These ways are used to increase good cholesterol.

Question 5.
Examine the following situations.
!Bursting of a cracker Working of a mixer grinder Lighting a match stick

a) In which situation is mechanical energy made use of?
Answer:
a) Working of a mixer grinder.

b) Tabulate the energy changes in the given situations.

Situations	Energy Changes
Bursting of a cracker	(a) → (b) + (c) + heat
Working of a mixer grinder	(d) → Heat + (e) + Sound
Lighting a matchstick	(f) → (g) + Heat + (h)

Answer:

Situations	Energy changes
Bursting of a cracker	(a) Chemical Energy → (b) Light energy + (c) Sound Energy + Heat energy
Working of a mixer grinder	(d) Electrical Energy → Heat Energy + (e) Mechanical Energy + Sound Energy
Lighting a matchstick	(f) Chemical energy → (g) Sound energy + Heat energy + (h) Light Energy

c) Understand the statement and the reason given below and choose the correct answer from the following.
StatementAll chemical reaction is accompanied by a change in energy.
Reason Endothermic reaction involve the release of energy.
A. The statement is correct. But the reason is not suitable for the statement.
B. The statement is wrong. But the reason is suitable for the statement.
C. The statement is wrong. But the reason is not suitable for the statement.
D. The statement is correct. But the reason is suitable for the statement.
Answer:
A. The statement is correct. But the reason is not suitable for the statement.

Question 6 contain two parts 6 (A) and 6 (B). Write any one from 6 (A) or 6 (B) completely.

Question 6.
(A)
a) Identify and name the animals in the given picture.

Answer:
a) 1 – Paramecium,
2 – Euglena

b) Write the steps involved in the experiment to observe these organisms.
Answer:
Steps involved in the experiment to observe organisms:

1. Collect a drop of water from a pond, field, or standing water using a dropper
2. Place the collected drop of water in the center of a clean glass slide.
3. Gently cover the water on the slide with a cover slip.
4. Place a part of the cover slip on the slide and gently lower it. This will avoid air bubbles.
5. Place the prepared slide on the stage of the microscope and secure it with clips.

c) Some statements related to cells are given below. Complete the table by writing them in the correct column.
• Chloroplast is present.
• Small vacuole is present.
Answer:

Plant Cell	Animal cell
Chloroplast is present	No cell wall.
A large vacuole is present.	Small vacuole is present.

OR
(B) a. Observe the picture and identify the parts of the cells in an onion.

Answer:
1 – Cell wall,
2 – Plasma membrane,
3 – Nucleus,
4 – Cytoplasm

b) Find the correct statements from the following. Correct the incorrect statements.
i) The body parts of animals are made up of different types of cells.
ii) The difference in the size of the cells is the reason for the difference in the size of the organisms.
iii) Chloroplasts are found only in plant cells.
iv) The parts of the plant are made up of the same type of cells.
Answer:
i), iii)
ii) The difference in size of organisms is due to the difference in the number of cells, not the size of the cells.
iv) The parts of the plant are made up of different types of cells.

c) Which is the central part that controls the functions of a cell?
Answer:
c) Nucleus.