CBSE Class 3 Science Worksheet A

 

How can liquids and gases change?

 

Heat changes water.Heat makes water change in to a gas.This gas is water vapor.Water vapor goes up in to the air.

 

Water vapor cools.The gas changes in to liquid.It changes back in to water.

9. Which of these birds migrate to India during winters?

 

eagles             Siberian cranes              woodpeckers

 

10. Where does Partridge make its nest?

 

on a tree branch                   on roofs of buildings           amongst tall grass

 

II. Name the following.

 

1. It has a long sticky tongue to catch insects. _________________________

 

2. The beak which helps heron to eat fish. _________________________

 

3. A parrot can crack open nuts and seeds with its. _______________________

 

4. The claws of an eagle. ___________________

 

III. State TRUE or FALSE. 

 

1. All Animals have same mouth parts. __________________

 

2. All birds lay eggs. ________________________

 

3. Birds migrate to warmer places in search of food and water. _______________

 

4. Ostrich lays the biggest egg. ______________________

 

V. Look at the picture and answer the following questions. 

 

1. Identify the bird.

 

_____________________________________

 

2. What type of beak does it have?

 

__________________________________

Q.1 Fill in the blanks:

1. Animals need food to Grow.

2. Animals need energy to work.

3. All food chain began from plant.

4. Plants eating animals is known as herbivore.

5. Flesh eating animals is known as carnivore.

6. An animal which eat both plants and animals is known as omnivore.

7. An animal which works for humans is known as Domestic animal.

8. Domestic animals should be fed on Oat and Fodder.

9. Animals like cows, buffaloes and goats gives us milk.

10. Milk producing animals should be fed on grass and oilseed-cakes.

Q.2 Give two examples for the following.
1. Carnivores:   Tiger      Fox
2. Herbivores:    Monkey     Goat
3. Omnivores:     Crow    Jackal
4. Domestic animals:    Horse    Camel
5. Energy giving food for domestic animals:   Oat    Fodder
6. Milk-producing food:     Grass     Oilseed-cakes
7. Animals used for carrying load:    Elephant    Mules

Q.3 Unscramble the words given below.
1. Energy.   2.  Plants  3. Food chain  4. Animals  5. Tiger
6. Bear      7.  Crow     8. Oxen           9. Goat      10. Cow

New Words ( copy New words twice in notebook)
1.Cells 2. Tissues 3. Digestion 4. Respiratory system
5. Oxygen 6. Intestine 7. Vessels 8. Circulatory system
9. skeletal 10. Muscular 11. Excretory 12. Spinal cord
13. urine 14. Kidney. 15. liver

Define the term

1. Cell: the tiny working unit of human body.
2. Sense organs : the organs which tells us about the world.
3. Heart: a pumping organ which pumps the blood to different part of the body.

Answers
1. The sense organs are connected to the brain through nerves.
2. Not to be done.
3. Oxygen burns the food we eat and gives us energy.
4. Skeletal system and muscular system are the two organ system which helps the body and its parts to move.
5. The function of reproductive system is to produce babies, so that life on earth goes on.

Extra questions

Q.6 Define digestion.
Ans: Digestion is the process of changing food in to simpler form so that it can be used by the body parts.

Q.7 What is the function of heart?
Ans: The heart pump the blood to different parts of the body through small and big blood vessels

Q.1. Choose the correct option and fill in the blanks:-

1. ______ changes from day to day or hour to hour.
climate (. ). weather (. )

2. The ____, the wind , the cloud and the rain causes change in weather.
Moon (. ). sun (. )

3. ____ is good for crop.
Rain( ). Flood (. )

4. _____ is caused when it does not rain for long time.
Drought (. ). Flood (. )

5. Gently blowing wind is called ____
Breeze (. ). Rain (. )

6. Tiny drops of ____ cling together to form cloud.
Water (. ). Food (. )

7. When we cool water , ___ is formed.
Ice (. ). Steam (. )

8. When we hear water _____ is formed.
Steam (. ). Ice (. )

9. _____ damages crops and buildings.
Breeze (. ). Flood (. )

10. Water from water bodies is evaporated because of the heat of _____.
Sunlight (. ). Moonlight (. )

Q.1 Match the following.
          COLUMN A                                                     COLUMN B

Please click on below link to download CBSE Class 3 Science Worksheet A