CBSE Class 3 EVS Revision Worksheet Set 12

CBSE Class 3 EVS Practice Worksheets (44)-Revision

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1 Complete the web chart:

2. Fill in the Blanks:-

a) We should cross road from __________________.

b) Group of tissues makes an ______________

c) Most abundant gas in air is_____________.

d) _____________ and _____________ parts of digestive system.

e)________________ controls traffic on road.

f)__________________ is used by plants to make their food.

3. Give reasons of the following:-

Excretory system plays important role in our body.

___________________________________________________________________

Please click the below link to access CBSE Class 3 EVS Practice Worksheets (44)-Revision

MBS International School
Revision Worksheet - Class III
EVS

Question 1. Complete the web chart:
Answer:
Here are four simple safety rules we should follow:
1. Always cross the road at the zebra crossing.
2. Never play or run on the active road.
3. Always wear a seatbelt while sitting in a car.
4. Do not touch electrical switches with wet hands.
In simple words: We must follow safety rules like crossing at the zebra crossing and not playing on the road.

Exam Tip: List easy-to-remember safety rules that you follow every day at home or on the road.

Question 2. Fill in the Blanks:-
a) We should cross road from __________________.
b) Group of tissues makes an ______________
c) Most abundant gas in air is_____________.
d) _____________ and _____________ parts of digestive system.
e)________________ controls traffic on road.
f)__________________ is used by plants to make their food.
Answer:
a) We should cross road from zebra crossing.
b) Group of tissues makes an organ.
c) Most abundant gas in air is nitrogen.
d) Stomach and small intestine parts of digestive system.
e) Traffic police controls traffic on road.
f) Carbon dioxide is used by plants to make their food.
In simple words: We cross roads safely at the zebra crossing. Nitrogen is the most common gas in our air. Plants use carbon dioxide to make their meals.

Exam Tip: Read the blank clues carefully to recall simple scientific terms like organ and nitrogen.

Question 3. Give reasons of the following:-
Excretory system plays important role in our body.
Answer: The excretory system is very important because it removes harmful waste and toxic liquid from our body. If waste stays inside, we will fall sick.
In simple words: This system cleans our body by throwing away bad waste so we do not get sick.

Exam Tip: Explain how this system works like a waste cleaner to keep our body healthy.

Question 4. Label the organs of human body :-
Answer:
The labeled parts of the human digestive system from top to bottom are:
1. Mouth: Where we chew our food.
2. Food pipe: The tube that carries food down.
3. Stomach: Where food mixes and digests.
4. Small Intestine: Where our body takes in nutrients.
In simple words: The main parts of our food system are the mouth, food pipe, stomach, and intestine.

Exam Tip: Label the organs in order starting from where food enters your mouth.

Question 5. Match the following:
Answer:
We can match the items as follows:
* Life giving gas: Oxygen
* Pumps blood: Heart
* Seat belt: Driving Car
* Plant make food: Carbon dioxide
In simple words: Oxygen helps us live, the heart pumps our blood, seat belts protect us in cars, and plants use carbon dioxide for food.

Exam Tip: Draw straight matching lines or write correct numbers side-by-side to stay neat.

Question 6. State True or False:-
Heart pumps blood to different parts of the body.
We should always wear seatbelt while riding a bike.
21% of air is oxygen.
Lungs are part of respiratory systems.
Traffic police helps the vehicles to run smoothly on the road.
Answer:
* Heart pumps blood to different parts of the body. ( True )
* We should always wear seatbelt while riding a bike. ( False )
* 21% of air is oxygen. ( True )
* Lungs are part of respiratory systems. ( True )
* Traffic police helps the vehicles to run smoothly on the road. ( True )
In simple words: Bikes need helmets, not seatbelts. The rest of the statements about our heart, lungs, air, and traffic police are correct.

Exam Tip: Pay close attention to words like 'bike' instead of 'car' to catch tricky questions.

Question 7. Answer the following questions:-
Q.1 What is the function of kidney?
Q.2 How do accidents occur?
Q.3 Write two uses of air?
Answer:
* Q.1: Kidneys filter and clean our blood by removing waste as urine.
* Q.2: Accidents happen when we are careless or do not follow safety rules on the road.
* Q.3: Two major uses of air are:
1. All living things need air to breathe and stay alive.
2. Air is needed for burning fires and flying kites.
In simple words: Kidneys clean our blood. Accidents happen when we are not careful. Air helps us breathe and helps fires burn.

Exam Tip: Keep your answers short and write in simple, complete sentences.