CBSE Class 4 Science Sample Paper Set B

Q1. Choose the correct option- 

1. Penguins have___________ to keep them warm.

a) Fur       b) Blubber       c) Hair        d) Wool

b) Blubber

2. Animals which can live both on land and in water are called_______________.

a) Terrestrial animals        b) Aquatic animals        c) Aerial animals     d) Amphibians

d) Amphibians

3. Camels store fat in their ______________.

a) Stomach     b) Hump       c) Legs       d) Eyes

b) Hump

4.________________ is process of shedding old skin by the caterpillar.

a) Warming       b) Hatching     c) Moulting        d) Reproduction

c) Moulting

5. Which of the following mammal lays eggs?

a) Whale       b) Cat        c) Platypus        d) Dolphin

c) Platypus 

6. Green plants convert solar energy into _______________ energy.

a)Muscular      b) Wind      c) Chemical      d) Electrical

 c) Chemical

7. Which of the following is not a simple machine?

a) Scissors    b) Inclined Plane     c) Pulley     d) Television.

d) Television.

8. ____________ are built to use energy of flowing water for producing electricity.

a) Dams       b) Windmill         c) Wedge     d) Inclined plane

a) Dams  

9. The young one of a hen is called _________

a) Baby     b) Maggot        c) Chick       d) Kitten

c) Chick 

10. ________________ is a form of energy.

a) Solid     b) Liquid         c) Gas        d) Heat

d) Heat

Q2.Name these- 5

1. Tools that make our work easy-Simple

Machines

2. The imaginary line on which the planets move

-Orbit

3. Stages of development from embryo to adult

- Life Cycle

4. A cluster of eggs of frog-

Spawn

5. The force that is applied with the help of machines-

Mechanical Force

Q3.Define- 5

a) Adaptation

The process of development of special features in the animals to survive/ in their environment is called adaptation.

b) Reproduction

The process by which living things produce more of their kind is called reproduction.

c) Force

A push or pull is called force.

d) Revolution

The process of moving of the planets around the Sun on a fixed path is called revolution.

e) Molecules

The tiny particles that make up matter are called molecules-

Q4.Give reason- 5

a) Animals need to reproduce.

So that their race or kind do not die out.

b) It is difficult to walk on snow.

As it creates friction and hinders movement.

c) India has summers in the month of June.

As the north pole is tilted towards the sun so northern hemisphere receives sunlight to cause summers.

d) Terrestrial animals have well developed sense organs.

to protect themselves from their enemies/ hunt food

e) Birds like Siberian Crane move from Siberia to India.

To escape the cold weather conditions, or in search of food and shelter.

Q5. Correct the following statements and rewrite them. 5

a) Carnivores eat both plants and animals.

.1. Omnivores eat both plants and animals. / . Carnivores eat only animals

b) Birds have hollow bones which make their body heavy.

2 . Birds have hollow bones which make their body light

c) Solids occupy the shape of container.

Liquids occupy the shape of container/Solids have fixed shape

4. The ability to do work is known as habitat.

The ability to do work is known as energy/ The place where a living thing lives is called habitat.

5. Moving air is called storm.

Moving air is called Wind

Q6. Answer the following questions- (2marks each) 18

1. a) Why are frogs and mice not seen in winters?

As they go off to sleep in underground holes to escape the the cold winters./go for hibernation.(1)

b) How do they take their food in winters?

They eat a lot during summers and store this food in their body as fat and survive on it.(1

2. a)An octopus is an aquatic animal but it does not have a streamlined body, still it can move in water. How?

An octopus folds its arms and makes it in a streamlined shape.(1)

b) How do fish and seals swim in water?

b) Fish moves with the help of fins (0.5) while the seals move with the help of flippers.(0.5)

3. a) What do you understand by the term camouflage?

The process in which the body colour or pattern of an animal matches with its surroundings in order to escape from enemies (1)

b) Why do birds find difficult to spot stick insects?

Because they look like small twigs.(1)

4. a)What is metamorphosis?

The complete change in the life cycle of an animal, before it becomes an adult is called metamorphosis.(1)

b) How do the frogs show metamorphosis in their life cycle?

b) The tadpole loses its tail and shows the growth of legs before becoming an adult.(1)

5. Mention any two uses of windmill.

5.They can be used to run flour mills .

They are used to draw water

They help in producing electricity. (one use 1 mark)

6. In a school there are seventy teachers; most of them come by their personal vehicle. Whereas there are many teachers who come from the same place using Metro trains and also do carpooling. Which according to you is a better practice? Justify your answer in two points.

6. Using metros and carpooling is a better option.

1. Teachers using metros avoid excess use of fossil fuel as they are non-renewable sources.

2. No pollution is caused

3. Saving energy.

4. Avoiding traffic jams /honking/safe. (any 2 points for 2m)

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