CBSE Class 3 Science Worksheet E

Read and download free pdf of CBSE Class 3 Science Worksheet E. Download printable Science Class 3 Worksheets in pdf format, CBSE Class 3 Science All Chapters Worksheet has been prepared as per the latest syllabus and exam pattern issued by CBSE, NCERT and KVS. Also download free pdf Science Class 3 Assignments and practice them daily to get better marks in tests and exams for Class 3. Free chapter wise worksheets with answers have been designed by Class 3 teachers as per latest examination pattern

All Chapters Science Worksheet for Class 3

Class 3 Science students should refer to the following printable worksheet in Pdf in Class 3. This test paper with questions and solutions for Class 3 Science will be very useful for tests and exams and help you to score better marks

Class 3 Science All Chapters Worksheet Pdf

MOVEMENT OF AIR (AIR CURRENT)

The atmospheric air that covers the Earth is not stable. It makes different kinds of movements. We can’t see air but we can sense/feel/ its presence from the movements it makes. Wind, a moving air, makes motion in different objects.

The movement of air from place to place is due to the heat energy from the sun.Hot air rises up because it is lighter in weight than cold air. Cold air goes down and takes the place of hot air because it is heavier than hot air. Therefore, air moves due to difference in weight. It is a continuous process.

Types of air Current

Atmospheric air makes two types of movements due to heat energy from the sun. These are

1. Convection current and

2. Wind current

1. Convectional Current

When hot air rises up, cold air goes down and takes the place of hot air. This continuous and cyclic movement between hot and cold air up and down is called convection current.

2. Wind Current

This type of air current occurs between hot and cold regions. The movement of air from colder region to hotter region in one direction is called wind current or simply wind. Wind blows from colder region to hotter region.

Indicating the Direction of wind

The direction of wind is indicated using an instrument called wind vane.

Humidity

Humidity (water vapor) is the amount of invisible atmospheric moisture.

The water cycle

Water from lakes, rivers and seas keeps on changing into water vapor. This is called evaporation. When the sun shines brightly, evaporation is rapid. This means a higher temperature favors evaporation. On cooling, the water vapor in

the atmosphere changes into water by a process called condensation. On further, cooling the droplets of water combine to form big and heavy drops of water, which finally fall down as rain.

Formation of Rain /precipitation/

Precipitation is any form of water that falls to the Earth’s surface. The different forms of precipitations include rain, snow sleet and freezing rain. Precipitation is important because it helps to maintain the atmospheric balance. Without precipitation, all of the lands on our Earth would be desert. It helps farmers to grow crops and provides a fresh water supply for us to drink. Precipitation can also be dangerous. Too much rain and snow can cause severe flooding and traffic accidents.

Types of precipitation

There are three types of precipitation. These are

1. convection rain

2. cyclonic/ frontal rain 3. Orographic

1. convection Rain

This type of rain is common near the equator. Unequal heating of the Earth’s surface creates a local hot spot. The air in contact with the hot spot expands and rises. Rising air rises adiabatically to dew point temperature. Rapid updraft and downdraft generates electricity which discharges as thunder and lighting.Therefore, convection rain is usually associated with lighting and thunder

2. cyclonic/ frontal/ rain

This type of rain is formed when warm air rises in contact with a cold air mass.This means warm air in contact with cold air rises as it rises, it cools adiabatically. The moist air condenses and forms clouds. On further cooling the clouds combine to form big and heavy drops of water that finally fall as rain.

3. Orographic rain

Orographic rain is formed when moist air is lifted over mountain barriers. Then the air expands and cools adiabatically. At dew point temperature, it condenses and forms clouds. The clouds continued condensation and produce rain or snow.

A. Tick the correct answer.

1. Our car gets energy from

a. petrol b. food c. metal d. none of these

2. Bouncing of light from any object

a. energy b. reflection c. friction d. all of these

3. We get linen from

a. flax plant b. cotton plant c. jute plant d. none of these

4. The imaginary line which divides the earth into two equal halves

a. axis b. orbit c. equator d. none of these

B. Give one word for the following.

1. The back and forth movement of an object. ______

2. The push or pull that causes objects to move. _____

3. Soil used to make pots. ____

4. The movement of earth which causes day and night. ____

5. The material that is made by using sand. ____

C. Choose the correct answer.

1. The layer of the earth with melted metals is called

a) the core.

b) the crust.

c) the mantle.

2. Gold is used for making jewellery because it is

a) very expensive.

b) strong and shiny.

c) yellow in colour.

3. The light passes through a

a) glass window pane.

b) wooden door.

c) brick wall.

D. Answer the following questions.

1. Why are shadows formed?

2. Name the products that we get from petroleum.

3. How is plastic harmful to us?

E. Give reason.

1. We see a ‘No Horn’ Zone outside the hospitals.

2. We can’t make clothes with paper.

3. The earth looks like a blue ball from space.

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

a. The movement of Earth around the Sun is called _____.

b. It causes ___.

G. Differentiate the following terms.

a. Axis and Orbit.

Q.1 Name the following:

1. Plants cannot make food with out this ___________

2. This animal breathes through gills ___________.

3. It grows from a seed_________.

4. Most plant breathe through tiny pores called_______.

5. Some plants grow from a part of plant like _______ and _________.

6.___________ plant eat insect.

Q.2 Differentiate between Plants and Animals.

PLANTS	ANIMALS
1.
2.
3.

Q.3 Draw a diagram to show that plants grow from seeds.
cbse-class-3-science-worksheet-e

New Words ( copy New words twice in notebook)

1. grazing. 2. Chasing 3. Greedily
4. health 5. Grow 6. Herbivore
7. food chain 8. Carnivore 9. Omnivore
10. Chewing 11. Sucking 12. Oil-seed cake
13. grinding 14. Leeches.

Define the following terms:
1. Herbivore: Plants eating animal is known as herbivore.
2. Carnivore: Flesh eating animal is known as carnivore.
3. Omnivore: Animal that eat booth plants and animals is known as omnivore.

Answers
1. Some animals eat plants, some plant eating animals, while some eat both plants and plant eating animals. Thus , we can say all animalos depend on plants for their food.
2. Omnivores get meat, eggs, fish and milk from animals as their food.
3. Cows and goats gives us milk. They should be fed on grass and oil-seed cake as these are milk producing food.
4. Earth worm eat soil which contain parts of dead plants animals.
5. Domestic animals serves us well if we take good care of them.

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CBSE Class 3 Science Worksheet E
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CBSE Class 3 Science All Chapters Worksheet

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Worksheet for Science CBSE Class 3 All Chapters

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All Chapters worksheet Science CBSE Class 3

All practice paper sheet given above for Class 3 Science have been made as per the latest syllabus and books issued for the current academic year. The students of Class 3 can be assured that the answers have been also provided by our teachers for all test paper of Science so that you are able to solve the problems and then compare your answers with the solutions provided by us. We have also provided a lot of MCQ questions for Class 3 Science in the worksheet so that you can solve questions relating to all topics given in each chapter. All study material for Class 3 Science students have been given on studiestoday.

All Chapters CBSE Class 3 Science Worksheet

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Worksheet for CBSE Science Class 3 All Chapters

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