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Subject – Science Worksheet
Class – 3rd

Name: _____________

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I. Choose the correct option for each question.

1. Into how many parts is the body of an insect divided?
   a) Two
   b) Three
   c) Four
   d) Five
2. Which of the following is considered a “social insect”?
   a) Butterfly
   b) Grasshopper
   c) Ant
   d) Beetle
3. To help flowers develop into fruits, which insect is most helpful in a garden?
   a) Locust
   b) Butterfly
   c) Cockroach
   d) Termite
4. We eat food to ______.
   a) grow
   b) stay healthy
   c) both a and b
   d) neither a nor b
5. Which of these is used as a fuel for cooking?
   a) LPG
   b) Wood
   c) Coal
   d) All of these
6. Pedestrians should cross the road only when the traffic signal for them turns:
   a) Red
   b) Yellow
   c) Green
   d) Pink
7. Which of the following should we always avoid in school?
   a) Learning
   b) Playing
   c) Fighting
   d) Eating
8. What should be used to clean a wound to prevent infection?
   a) Plain mud
   b) Antiseptic soap and water
   c) Oil
   d) Ink
9. A caterpillar building a cocoon is in which stage of a butterfly’s life cycle?
   a) Stage 1
   b) Stage 2
   c) Stage 3
   d) Stage 4
10. We should avoid playing games ______.
    a) in the park
    b) on the road
    c) in the ground
    d) in the garden
11. Children should always go to the swimming pool with ______.
    a) elders
    b) alone
    c) friends
    d) none of these
12. We should always avoid ______ in school.
    a) fighting
    b) learning
    c) playing
    d) eating
13. It is very dangerous to play with a ______.
    a) ball
    b) bat
    c) knife
    d) toy
14. Rohit accidentally slipped on the floor and got a cut on his skin by the sharp edge of a table. Which of the following steps is/are suitable for him as first aid?

a) Clean the wound with water and an antiseptic soap to prevent infection.
b) Pinch the nose using the thumb and index finger.
c) Both a and b are correct.
d) None of these is correct.

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II. Fill in the Blanks

1. ______ is a substance consumed by human beings for their survival.
2. The important components present in food are known as ______.
3. Plants make their food by the process of ______.
4. Disha is trying to boil her food quickly. She should use ______ cooking.
5. Honeybees live in a structure called ______.
6. Plants make their own food through the process of ______.
7. The important components present in food are known as ______.
8. To boil food very quickly, Disha should use a ______.
9. Sushma is eating food prepared by applying dry heat directly to it; she is eating ______ food.
10. Cloth ______ might damage winter garments kept in a wardrobe.
11. Everyone must follow ______ rules to avoid accidents.
12. An ______ lotion or cream should be applied to a wound after washing it.
13. Always wear a ______ when traveling in a car.
14. First aid can be given to ______ lives.
15. Always put on the ______ when travelling by a car.
16. An antiseptic soap is applied on the wound to prevent ______.

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III. Find the odd man out

1. nosebleed, burn, cuts, first aid
2. knife, scissor, book, sword
3. television, refrigerator, air conditioner, chair
4. zebra crossing, footpath, traffic signal, accident
5. cotton, bandage, medicine, paint

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IV. Match the following

Column A

1. steaming
2. roasting
3. boiling
4. grilling

Column B

a. The food is kept in an uncovered pan in an oven or on a stove for cooking.

b. The food is cooked by applying direct heat.

c. The food is kept above boiling water for cooking.

d. The food is kept in boiling water for cooking.

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Column A

1. insects that live in large groups
2. the part of an insect that contains the sting organ
3. the part of an insect that contains feelers
4. the insect that eats other harmful insects
5. insects that destroy wooden furniture

Column B

a. head

b. social insects

c. ladybird

d. termites

e. abdomen

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V. State whether the following statements are true or false

1. Milk is a dairy product.
2. Juicing is a method of cooking.
3. Baked bread is prepared by the method of steaming.
4. The full form of LPG is less polluting gas.
5. We get cheese from plants.
6. When playing on a swing, we should stand on it.
7. It is very safe to play in the kitchen.
8. We should push for our turn while playing in the park.
9. Safety rules do not prevent us from getting injured.
10. First aid can be given to save lives.

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VI. Short Answer Questions

1. Define the following:
   (a) Frying
   (b) Juicing
2. What is first aid?
3. Write any two safety rules that need to be followed on the road.
4. What can we do to avoid injury?
5. What are the situations in which you may fall? What are the dangers of falling?

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VII. Answer the following questions

1. Name two insects that eat other harmful insects.
2. Name the three parts of an insect.
3. Mention any three ways of protecting insects from disappearing.
4. Explain the life cycle of a butterfly.
5. What enables running insects to move quickly on land?

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VIII. Conceptual Questions

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