CBSE Class 4 EVS Revision Worksheet Set 12

Q.1 Tick the correct option:

a) Spinach is rich in ………………..mineral.
i) Iron
ii) Fluoride
iii) Diamond
iv) Chlorine
Answer: (i) Iron
Spinach is a leafy green vegetable that is an excellent source of iron, which helps in the formation of hemoglobin in blood.
In simple words: Spinach contains plenty of iron to keep our blood healthy.

Exam Tip: Remember that green leafy vegetables are rich sources of essential minerals like iron.

b) We get minerals from the place called…………………
i) pipes
ii) mines
iii) pool
iv) drills
Answer: (ii) mines
Minerals are natural substances extracted from the earth through the process of mining.
In simple words: Minerals are dug out from deep inside the earth in mines.

Exam Tip: Associate the extraction of underground resources and minerals directly with mines.

c) The person who stands for elections must be above the age of …………
i) 20
ii) 18
iii) 25
iv) 35
Answer: (iii) 25
To contest elections for legislative assembly or Lok Sabha in India, a person must be at least 25 years of age (while voting age is 18 years).
In simple words: A person must be 25 years old to contest an election.

Exam Tip: Do not confuse the minimum age for voting (18 years) with the minimum age for contesting elections (25 years).

d) Shimla is the capital of
i) Madhya Pradesh
ii) Orissa
iii) Uttranchal
iv) Himachal Pradesh
Answer: (iv) Himachal Pradesh
Shimla is the well-known hill station and capital city of the northern Indian state of Himachal Pradesh.
In simple words: Shimla is the capital city of Himachal Pradesh.

Q.2 Fill in the blanks:

i) The large moving ice blocks are called …………………………..
Answer: glaciers
In simple words: Slow-moving rivers of ice are called glaciers.

Exam Tip: Glaciers are major sources of perennial rivers in northern India.

ii) Process of using discarded material again is called ………………………..
Answer: recycling
In simple words: Turning waste materials into useful products is called recycling.

Exam Tip: Recycling helps reduce waste and protects the environment.

iii) The deepest mines of gold in the world are ………………. দী
Answer: Kolar Gold Fields (or Mponeng Gold Mine / Kolar mines)
In simple words: The Kolar gold mines in Karnataka are among the deepest globally.

Exam Tip: Remember Kolar in Karnataka as a historic site for deep gold mining in India.

iv) _____________helps the doctor to decide whether a person is well or not.
Answer: Stethoscope
In simple words: Doctors use a stethoscope to listen to heartbeat and breathing.

Exam Tip: The stethoscope is the iconic medical instrument used for diagnostic auscultation.

v) The southern tip of mainland India is…………………………………………
Answer: Kanyakumari (Cape Comorin)
In simple words: Kanyakumari marks the southernmost end of mainland India.

Exam Tip: Distinguish between the mainland tip (Kanyakumari) and the absolute southernmost point of India (Indira Point in Andaman and Nicobar).

vi) Kullu shawl is famous handicraft of………………………………………
Answer: Himachal Pradesh
In simple words: Kullu shawls are traditional handwoven woolen garments from Himachal Pradesh.

Exam Tip: Associate regional handicrafts with their respective states for cultural geography questions.

vii) There are …………………………..main tributaries of river Indus
Answer: five (Panjnad - Jhelum, Chenab, Ravi, Beas, and Sutlej)
In simple words: The Indus river has five major tributaries that give Punjab its name.

Exam Tip: The word 'Punjab' originates from 'Panj Ab', meaning land of five rivers.

viii) Energy from falling water is used to make……………………
Answer: hydroelectricity (electricity)
In simple words: Water falling from dams generates hydroelectric power.

Exam Tip: Hydroelectricity is a clean and renewable source of electrical energy.

Q.3 Correct the false statement:

a) Chandigarh is the capital of Tripura.
Answer: Chandigarh is the capital of Punjab and Haryana (not Tripura). The capital of Tripura is Agartala.
In simple words: Tripura's capital is Agartala, while Chandigarh serves Punjab and Haryana.

Exam Tip: Always replace incorrect geographical facts with accurate state capitals.

b) When we sing we use light energy.
Answer: When we sing we use sound energy (or muscular/mechanical energy of vocal cords), not light energy.
In simple words: Singing produces sound energy, not light energy.
Exam Tip: Match daily human activities with the correct form of energy involved.

c) Fir trees are found in Thar desert.
Answer: Fir trees are found in mountain regions with cold climates (like the Himalayas), not in the Thar desert. Cactus and thorny bushes are found in the Thar desert.
In simple words: Fir trees grow in cold mountains, whereas desert plants like cactus grow in the Thar desert.

Exam Tip: Vegetation type depends heavily on climate and rainfall.

d) Heart is made up of bones.
Answer: Heart is made up of cardiac muscles (muscular tissue), not bones. Bones make up the skeletal system.
In simple words: The heart is a muscular organ, not a bony structure.

Exam Tip: Internal organs like the heart and stomach are composed of specialized muscles.

Q.4 Give reasons:

a) The sun is called the main source of energy because
Answer: It provides abundant heat and light energy directly or indirectly to all living organisms on Earth, driving weather systems, plant photosynthesis, and sustaining life.
In simple words: Almost all heat and light on Earth comes directly from the Sun.

Exam Tip: Emphasize that the Sun is the ultimate provider of energy for life on Earth.

b) The Northern Plains have fertile soil because
Answer: They have been formed by the continuous deposition of rich alluvial silt brought down by perennial rivers originating from the Himalayas.
In simple words: Himalayan rivers deposit nutrient-rich soil across the Northern Plains every year.

Exam Tip: Link alluvial soil fertility directly to river deposition.

c) We should respect our National Flag because
Answer: It is a sacred symbol of our nation's sovereignty, unity, freedom, and the sacrifices made by our freedom fighters.
In simple words: The National Flag represents our country's honor and freedom.

Exam Tip: National symbols foster patriotism and national integration.

d) Blood protects our body from diseases because
Answer: It contains white blood cells (WBCs) that act as soldiers to fight off harmful germs, bacteria, and viruses that enter our body.
In simple words: White blood cells in our blood destroy germs and protect us from falling sick.

Exam Tip: Remember white blood cells as the defense mechanism of the circulatory system.

Q.5 Answer the following questions:

a) Write any two functions of blood.
Answer:
1. It transports oxygen from the lungs to all parts of the body and carries carbon dioxide back to the lungs.
2. It protects the body against diseases by fighting germs through white blood cells.
In simple words: Blood carries oxygen everywhere and fights off disease-causing germs.

Exam Tip: List functions clearly using bullet points for maximum clarity.

b) What is energy? Write any four different forms of energy.
Answer: Energy is defined as the capacity or ability to do work. Four different forms of energy are:
1. Light energy
2. Heat energy
3. Sound energy
4. Electrical energy
In simple words: Energy is the power to do work, and it exists in forms like light, heat, sound, and electricity.

Exam Tip: State the scientific definition clearly before listing examples.

c) Why do we need to change the tyres of our car?
Answer: Over time, continuous friction with the road wears out the tread on car tyres. Worn-out tyres lose grip, reducing traction, which can cause slipping or skidding on wet roads and lead to accidents.
In simple words: Worn tyres lose their grip, so we change them to prevent skidding and accidents.

Exam Tip: Relate tyre wear and tear directly to surface friction and road safety.

d) What is a political party?
Answer: A political party is an organized group of people who share common political views and aim to contest elections, win power in government, and implement public policies.
In simple words: A political party is a group of people organized to contest elections and form the government.
Exam Tip: Mention both contesting elections and governance in your definition.

e) What do farmers feed their cattle for good yield?
Answer: Farmers feed cattle a balanced and nutritious diet consisting of green fodder, dry hay, oilcakes, grains, and clean drinking water to ensure good health and high milk yield.
In simple words: Farmers feed cattle nutritious fodder, grains, and clean water to keep them healthy and get more milk.

Exam Tip: Emphasize balanced cattle feed for improving agricultural dairy yield.

f) Name any two states that share their boundaries with Himachal Pradesh.
Answer: Punjab and Haryana (Other neighboring states/UTs include Jammu and Kashmir, Ladakh, Uttarakhand, and Uttar Pradesh).
In simple words: Punjab and Haryana share borders with Himachal Pradesh.

Exam Tip: Practice locating neighboring states using an outline map of India.

Q.6 Identify the force shown in the picture below.
a) The force shown in the picture is …………………………………..
b) It was discovered by ………………………………………….
c) The unit of force is……………………………………………
d) Define this force briefly: …………………………………………………………………………
Answer:
a) Gravitational force (Gravity)
b) Sir Isaac Newton
c) Newton (N)
d) Gravitational force is the invisible pull exerted by the Earth that attracts objects toward its center.
In simple words: The image shows gravity pulling apples down; it was discovered by Isaac Newton and is measured in Newtons.

Exam Tip: Remember that gravity pulls all objects toward the center of the Earth.

Q.7 Complete the flowchart:
Answer:
Main dishes of Punjab:
1. Makki di Roti and Sarson ka Saag
2. Dal Makhani
3. Chole Bhature (or Lassi / Paneer Tikka)
In simple words: Famous Punjabi dishes include Makki di Roti with Sarson ka Saag, Dal Makhani, and Chole Bhature.

Exam Tip: Flowcharts should be completed with precise, well-known cultural examples.

Q.8 Draw the well labelled diagram of blood vessels. Colour it.
Answer:
Arteries (drawn in red to represent oxygenated blood) and Veins (drawn in blue to represent deoxygenated blood), connected by tiny capillaries.
In simple words: Draw arteries in red and veins in blue to show blood flow through vessels.

Exam Tip: Always color arteries red and veins blue in biological diagrams for correct scientific representation.

Q.9 Mark the following on the map of India:
a) The coastal plains
b) The Himalayas
c) Kolkata
d) Lucknow
Answer:
a) Coastal Plains: Narrow strips along the western coast (Western Coastal Plains) and eastern coast (Eastern Coastal Plains) of peninsular India.
b) The Himalayas: The northern mountain ranges stretching along the northern border.
c) Kolkata: Marked in the eastern part of India, capital of West Bengal.
d) Lucknow: Marked in the northern state of Uttar Pradesh.
In simple words: Locate the coastal plains along the seas, Himalayas in the north, Kolkata in the east, and Lucknow in Uttar Pradesh on the map.

Exam Tip: Practice map pointing regularly to score full marks in geography sections.

Please refer to attached file for CBSE Class 4 EVS Revision Worksheet (9)