Chapter 6-Changes around Us worksheet for class 6 science

Sep 30, 2022, 16:45 IST

Academic team of Physics Wallah uploaded Important questions & worksheet for class 6 science Chapter 6- Changes around Us. All pdf sheet consists of different type of questions asked in school exam like one mark, two marks, five marks and each question are explained with step by step solution. Chapter 6-Changes around Us class 6 science is important chapter for your exam .

Before solving Chapter 6-Changes around Us of class 6 science read the theory part of chapter from your textbook, do not jump to solution of Chapter 6-Changes around Us try to write the answer by yourself and use solutions as reference .  

Do follow NCERT Solutions for Class 6 Science prepared by expert faculty of Physics Wallah. If any students need to take the online test to check their concepts or undertstanding then they can visit Quiz for Changes around us.

Section - A

Q1. Give an example each of natural change and a man made change.

Ans. Ripening of fruits is an example of natural change.

Weaving of cloths is an example of manmade change.

Q2. What happens when metal is heated?

Ans. Any metal when heated ,becomes larger in size, which is called as expansion

Q3. Melting of ice is the example a change. Mention the change.

Ans. Melting of ice is the example of reversible change

Q4. Give an example of an irreversible change.

Ans. Conversion of Milk to curd is an example of irreversible change.

Q5. What happens on application of heat to a glass of water

Ans. A glass of water when heated results in the evaporation of water.Thus the quantity of water decreases.

Q6. Give an example of irreversible change that take place due to heating.

Ans. Heating of plastic toy is an example of irreversible change.

Q7. Mention the change in the baaking of cake.

Ans. Baking of cake is the example of irreversible change.

Q8. What happens to the size of the material when it is cooled?

Ans. Material’s size decreases when it is cooled.

Q9. Which processes can change the state of matter?

Ans. Heating or cooling process can be change the state of matter.

Q10. Mention the types of changes that occur around us.

Ans.Two types of changes occur around us are:

1. Reversible
2. Irreversible

Section - B

Q11. What do you mean by reversible change?Give an example.

Ans. A change that can be reversed is called reversible change.

Example: Hot milk to cold milk or heating of milk followed by its cooling.

Q12. What is a irreversible change?Give an example.

Ans. A change that can not be reversed is called irreversible change.

Example → Milk to curd

Q13. Give some examples of desirable changes.

Ans. Examples of desirable changes are :

• The growth of an organism
• Drying of clothes
• Ripening of fruits
• Changing of milk into curd

Q14. Give some examples of undesirable changes.

Ans. Some examples of undesirable changes are:

• Rusting of iron
• Pollution caused by vehicle
• Death of a person
• Destruction caused by flood etc

Q15. What do you mean by slow change?

Ans. The change, which takes place over a long time, is called a slow change.

These slow changes may take hours, days, months or years.

e.g., Germination of seed, rusting of iron

Q16. What do you understand by a fast change?

Ans. Fast changes occur very fast. These changes occur with in seconds or minutes

e.g., Changing of ice into water, Burning of matchstick

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