CBSE Class 3 Science Revision Worksheet

General Science

Ans- 1.I  2.G  3.H  4.A  5.B  6.F  7.J  8.D  9.E  10.C

Ans- A. Solid   B. Liquid   C. Gas

More Questions

Q: 1 Fill in the blanks.

HINTS: (First aid box, hurt, rules, help, antiseptic, wound, bandage,Medicine, doctor)

Once there were a group of friends playing in the garden .Amit broke the _______ of the game. Mohit got _______. His friends brought a _______and gave Amit the immediate ____________. They cleaned the ________ with ____________lotion and put a __________on the wound. Then they took Amit to the _________ and the doctor gave him the _____________.

Q:2 Write true or false.

1. We should run in the class.__________

2. Accident happens due to carelessness.__________

3. We should use school equipment carefully.__________

4. We should cross the road at zebra crossing. __________

5. Always walk on the footpath. __________

Q:3 Draw a first aid box and the things we put in the first aid box.

Q: 4 Answer the following questions:-

I. Write three safety rules that you should follow at home.

II. Write three safety rules that you should follow at school.

III. A bus driver should not jump a red light on a crossing .Why?

A. Fill in the blanks with the correct words.

1) Never touch the wires or switches with ___________________.

2) Accidents can be prevented by following certain ____________.

3) Never wear synthetic cloths while working in the ____________.

4) Flying the kites on the _____________ should be avoided.

5) Playing games keeps us _______________ and ______________.

6) Cross the road only at ____________________.

7) The first help given to an injured person immediately is called _________________.

8) _____________ birds take care of their eggs and young ones.

9) A __________________ sews leaves together with its beak to make a nest.

10) The _________________ is a flat nest that can be found on the treetops.

B. Write True / False.

1) Parrot makes the cup nest ________________.

2) The parent birds keep their eggs warm for hatching _____________.

3) Accidents happen when we are careful _______________.

4) We must never panic when someone is hurt ___________.

5) We should not run while boarding and de-boarding the school bus._______________.

C. Match the following.

          A                                 B

1. Bluebird                    1. Cup nest

2. Bulbul                       2. First aid

3. Vulture                     3. Cavity nest

4. Antiseptic cream      4. Platform nest

A. Answer the following Questions.

1. What is digestive system?

2. Why do birds make nest?

3. What does a seed need to grow in to a plant?

B. Define the following term:-

1. Heart :______________________________

2. Tap root :____________________________

C. Fill in the blanks.

1. Our _____ helps us to taste.

2. Birds _____ act as a rudder of a boat.

3. ______ fruit have many seed inside them.

4. _____ bird scratch and dig out the insect and buried seeds from the soil.

5. The ________ body is the better machine than any other machine.

D. Match the following

1. Grass             food stored in stem

2. Bean              wading birds

3. Sugarcane    tap root

4. Cranes          removal of solid waste

5. Anus             fibrous root

E. Tick the odd one out:

1. Eagle    Hawk    Parrot    Vulture

2. Cabbage    Spinach    Carrot    Lettuce

3. Eyes     Ears     Brain     Skin    Tounge

4. Flowers    Stem    Leaves    Root    Fruits

5. Skin    Kidney    Lungs   Brain

F. Draw the diagram of parts of plant and parts of a leaf.

New Words ( copy New words twice in notebook)

1. Shoot 2. blade 3. swollen

4. root 5. lamina 6. upright

7. tap 8. veins 9. photosynthesis

10.fibrous 11. stalk 12. beetroot

Define the following terms:

1. Warmth: here, the light of sun.

2. Tap root : when a main root grows from the end of the stem.

3. Fibrous root: when a number of root grow from the end of the stem.

Answers

1. The part of plant which grows above the ground is called shoot whereas the part of plant which grows below the ground is called root.

2. The two functions of root are as follows:

a. The fixes the plants in the soil.

b. They absorb water and salts from the soil.

3. The uses of stem are as follows:

a. It holds the plants upright and supports.

b. It carries water absorbed by roots to the leaves.

c. It also carries food prepared by leaves to different parts of plant.

4. A seed needs enough air, water and warmth to grow into a plant.

Extra questions

Q.5 What do mean by photosynthesis?
Ans: Photosynthesis is process by which a green leaf makes food for the plants with the help of air, water and sunlight.

Q.6 What is Lamina?
Ans: The flat and broad part of a leaf is called the leaf blade or lamina.

I. Write “True” for the correct statements and “False” for the incorrect statements.

I Guess Who am I ?

1. I have holes in my beak.

2. I am the baby bird.

II Rewrite the following sentences correctly :

1. Eagles have broad and flat beak.

2. Birds fly with the help of tail feathers.

III Think and answer :

1. What kind of beak does a sparrow have ?

2. What kind of claws does a hen have?

IV Define the following terms :

1. Perching

2. Preening

V Give reasons :

1. Cuckoo is said to be a lazy bird.

2. Birds have different types of beaks.

VI Answer the following questions:

1. What is the function of down feathers?

2. How do the birds fly?

New Words ( copy New words twice in notebook)
1. Flesh 2. Beaks 3. Broad 4. Feather
5. Crushed 6. Slender 7. Horny 8. chisel
9. Claws 10. Perching 11. Scratching 12. Wading
13. Upstroke 14. Down stroke.

Define the following terms:
1. Birds of prey: birds which hunt and eat other animals.
2. Chisel: A carpenter tool.
3. Rudder: here, the tail of a bird which help to change the direction while flying.

Answers
1. Most grain eating birds have short, hard and horny beak.
2. The uses of curved beak of a parakeet are:
a) It helps to crack nuts and hard fruits.
b) It also helps in climbing tree.
3. A duck has broad and flat beak with tiny holes on the side, whereas a sparrow has short, hard and horny beak.
4. The feet of perching birds help them to hold on to a branch.
5. The legs of wading birds help them to wade through muddy water without getting wet.
6. Birds make nest to lay eggs and to protect them from enemies and bad weather.
7. When baby birds comes out of eggs they are weak and featherless . The parents feed them keep them warm protect them.

Extra questions

Q.8 What kind of feet do swimming birds have?
Ans: Swimmimg birds have webbed feet.

Q.9 Differentiate between upstroke and down stroke movement of wings?
Ans: Upstroke:- the wings move upward and backward.