Kerala Syllabus Class 6 Basic Science Model Question Paper Set 5

To reduce exam fear, Class 6 Basic Science Question Paper Kerala Syllabus Set 5 provide good practice.

Kerala Syllabus 6th Standard Basic Science Model Question Paper Set 5

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.
A) What is meant by organ system?
Answer:
An organ system is a group of multiple organs that work together to perform a specific function.

B) Analyse the given statement and reason, and select the correct option.
Statement: All cells in the human body are roughly the same shape.
Reason: The human body is made up of about two hundred different types of cells, including nerve cells, blood cells, and muscle cells.
a) The statement and the reason are true, and the reason is the correct explanation for the statement.
b) The statement and the reason are true, but the reason is not the correct explanation for the statement.
c) The statement is true, but the reason is false.
d) The statement is false, but the reason is true.
Answer:
d) The statement is false, but the reason is true.

C) Write any three organ systems of the human body and their functions.
Answer:
• Digestive system: Digests food and absorbs nutrients. (Organs: stomach, intestines, liver).
• Respiratory system: Helps in breathing in and out (exchange of gases). (Organs: lungs, trachea).
• Circulatory system: Transports oxygen and nutrients throughout the body through the blood. (Organs: heart, blood vessels).

Question 2.
A. Complete the table by choosing state of rest/motion for each example.

Context	The reference object	State of motion/ State of rest
a) Child on a moving giant wheel	i) child sitting near by
	ii) A Person standing on the ground
b) Person riding a horse	i) The Horse
	ii) The ground
c) Earth in the solar system	i) The Sun
	ii) The moon
d) A book on a table	i) The Table
	ii) The Sun

Answer:

Context	The reference object	State of motion/ State of rest
a) Child on a moving giant wheel	i) child sitting near by	i) -State of rest,
	ii) A Person standing on the ground	ii) – State of motion
b) Person riding a horse	i) The Horse	i)- State of rest,
	ii) The ground	ii) – State of motion
c) Earth in the solar system	i) The Sun	i)- State of motion,
	ii) The moon	ii) – State of motion
d) A book on a table	i) The Table	i) -State of rest,
	ii) The Sun	ii) -State of motion

B. What do you mean by a reference body.
Answer:
An object can be said to be in motion only in relation to another body or position. The body used for this purpose is called reference body.

C. Observe the arrangement of gears in the figure

Choose the correct statements related to them .
(i) 1 st gear (small one) would be the slowest.
(ii) 4th gear (big one) would be the slowest.
(iii) When 1st gear is rotated 3rd gear rotate in the same direction as that of 1st gear .
(iv) 1 st gear (small one) would be fastest.

Options:
a) (i) and (ii) only
b) (ii), (iii) and (iv) only
c) (i),(ii) and (iii) only
d) (ii) and (iv) only
Answer:
C. b) (ii), (iii) and (iv) only

Question 3.
Read the situations given below.
• Light crackers
• Operates the motor to draw water
• Operates the mixer grinder
• Bulb glows
• Lighting a matchstick

A) Tabulate the energy changes in each situation

Answer:

Situations	Energy changes
• Light crackers	• Chemical energy → Light energy + sound energy + heat energy
• Operates the motor to draw water	• Electrical energy → mechanical energy
• Operates the mixer grinder	• Electrical energy mechanical energy + sound energy
• Bulb glows	• Electrical energy → Light energy + heat energy
• Lightning a matchstick	• Chemical energy → Sound energy + light energy + heat energy

B) Group the situations in which the same energy c etakes place.

Answer:
Group 1 (Electrical → Mechanical)
• Operates the motor to draw water
• Operates the mixer grinder Group 2 (Chemical → Light/ Heat/ Sound)
• Light crackers
• Lighting a matchstick

C)Identify the examples showing physical change
(i) Copper vessel getting verdigrised
(ii) Fermentation of dosa batter
(iii) Towel absorbing water
(iv) Sugar dissolving in water Options
a) (iv) only
b) (i) and (ii) only
c) (iii) and (iv) only
d) (ii),(iii) and (iv) only
Answer:
c) (iii) and (iv) only

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

Question 4.
A. a) Write how to make a magnet using a battery.
Answer:
Materials we need

1. 9V battery, connector
2. Insulated copper wire
3. Soft iron nail
4. Pins

Wind the insulated copper wire around an iron nail as shown in the figure.

Make sure to have many coils. Remove the insulation from both ends of the copper wire. Connect these ‘ ends to the battery using a connector. Bring the tip of the nail close to a few pins. We can see that the iron nail will attract the pins. If we disconnect the battery, the iron nail will lose its magnetic power.

b) An electromagnet is a temporary magnet. Why?
Answer:
When electricity passes through a copper wire, a magnetic field is created around it and the iron rod (nail) becomes a magnet. This is an electromagnet. Its magnetic power is temporary. When the electric current is cut off, the electromagnet loses its magnetic power. Therefore an electromagnet is called a temporary magnet.

c) Understand the statement given below and choose the correct reasons.
Statement: The magnetic force decreases over time.
Reason: (i) When non-magnetic substance is placed between two bar magnets.
(ii) Dumping of magnets together
(iii) Heating magnets
(iv) Hitting hard with hammer
Options
a. (i)and (ii) only
b. (iii) and (iv) only
c. (i),(ii) and (iii) only
d. (ii), (iii) and (iv) only
Answer:
d. (ii), (iii) and (iv) only

OR
B. A. Write the names of the magnets given below.

Answer:
a) Bar magnet
b) Magnetic needle
e) U magnet
d) Ring magnet

B. Write the name of two devices that use magnets.
Answer:
• Electric bell
• Electric crane
• Generator
• Loudspeaker (Any o)

C. Find the correct statements.
i) A disc magnet has one pole.
ii) Like poles of magnets attract.
iii) The magnetic power is low at the middle part of a bar magnet.
iv) Rubber is a non-magnetic substance.
Answer:
C) c) (iii) and (iv) only

Question 5.
a) What is blood pressure?
b) What is the normal blood pressure of adults?
c) Name two causes of abnormal blood pressure.
d) Write one measure to control BP.
Answer:
a) Blood pressure is the pressure exerted on the walls of blood vessels as blood flows through them.
b) 120/80 mmHg
c) Smoking, obesity and excessive salt intake can cause abnormal blood pressure.
d) Reduce the use of salt in food.

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

Question 6.
A. Your friend fell down during a football game and fractured his arm.

a) What first aid should be provided to someone with a fracture?
Answer:
• Immobilise the Injured Area
• Bandage the injured part using a splint.
• Apply Cold (Ice Pack)
• A person with a bone fracture should be taken to the hospital immediately after receiving first aid.

b) Why do we use the metal rod for fixing a fractured bone?
Answer:
It helps the bones to stay stable and heal quickly.

c) What nutrients and nutrient-rich foods should the child eat for strong bones, as advised by the doctor?
Answer:
Calcium: The primary mineral component of bones, essential for bone formation and strength.
Milk, yogurt, cheese, paneer, ragi, etc.

Vitamin D: Fatty fish, egg yolks, fortified milk, fortified cereals, and exposure to sunlight (the body produces Vitamin D when skin is exposed to sunlight).

Protein: provides the framework (collagen) onto which calcium and other minerals are deposited. Lean meats (chicken, fish), eggs, dairy products, pulses, etc.

OR
B. Analyse the pictures and answer the following questions:
Img- 1
a) Name the type of skeleton present in this snail and centipede.
Answer:
a) Exoskeleton

b) What do you mean by exoskeleton and endoskeleton.
Name the organism that has both exoskeleton and endoskeleton.
Answer:
Some organisms like snails, crabs have thick outer coverings, while some animals like cockroaches and prawns have relatively thin shells. These outer coverings are called exoskeletons. An endoskeleton is a framework of bones inside the body that supports, protects organs, and helps, in movement.
Turtle has both exoskeleton and endoskeleton

c) How does the outer skeleton benefit the organisms.
Answer:
They help to protect and give shape to their body and offer protection from enemies.