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Worksheet: A Journey through States of Water - 2 | Science for Class 6 PDF Download

Fill in the Blanks

(i) Water vapor gets added to air by                  .

(ii) The circulation of water between ocean and land is known as the                   .

(iii)                 covers more than two thirds of the earth’s surface.

(iv) In atmosphere water is present in huge quantities as              and               .

(v) Water present in ocean and sea is                 for drinking.

True or False

(i) Water evaporates faster on hot summer day compared to cloudy day. 

(ii) About one thirds of the Earth is covered with water. 

(iii) Heating is essential to convert water into its vapor. 

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Short Questions Answers

Q3: Which is the purest form of natural water?

Q4: Name the process involved in the formation of clouds.

Q5: Why water disappears from wet clothes as they dry up?

Q6: What are the different forms of water that exists on earth?

Q7: Define water cycle.

Q8: How water enters the air?

Q9: Where do water in rivers and lakes come from?

Q10: Define condensation.

Q11: Why water spilled on a floor dries up after some time?

Q12: What is evaporation?

Q13: Why is water in seas and oceans saline?

Q14: Why we rarely notice water vapor from a bucket full of water?

Q15: Why does a mist of tiny water droplets form when we breathe out on a window in winter?

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Assertion and Reason Questions

Q16: Assertion (A): Role of oceans in supplying usable water is quite important.
Reason (R): When the sea water reaches us, in various other forms of sources of water, it is no more saline.
(a)
Both A and R are true and R is the correct explanation of A.
(b) 
Both A and R are true but R is not the correct explanation of A.
(c) 
A is true but R is false.
(d) 
A is false but R is true.

Q17: Assertion (A): The sea water is saline.
Reason (R): The sea water contains many dissolved salts.

(a)
 Both A and R are true and R is the correct explanation of A.
(b) 
Both A and R are true but R is not the correct explanation of A.
(c) 
A is true but R is false.
(d) 
A is false but R is true.

Q18: Assertion (A): Sea water changes to water vapours by the process of transpiration in the presence of sunlight.
Reason (R): When sea water changes into water vapour it leaves the dissolved salts behind.

(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.

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FAQs on Worksheet: A Journey through States of Water - 2 - Science for Class 6

1. What are the three states of water?
Ans. The three states of water are solid, liquid, and gas. In its solid state, water is ice; in its liquid state, it is water; and in its gaseous state, it is water vapor or steam.
2. How does water change from one state to another?
Ans. Water changes from one state to another through processes called freezing, melting, condensation, and evaporation. For example, when water freezes, it changes from liquid to solid (ice), and when it melts, it changes from solid (ice) back to liquid. When water evaporates, it changes from liquid to gas, and when it condenses, it changes from gas back to liquid.
3. Why is understanding the states of water important?
Ans. Understanding the states of water is important because it helps us comprehend natural processes, such as the water cycle. This knowledge is essential for various fields, including environmental science, meteorology, and even daily life activities like cooking and weather prediction.
4. What is the water cycle, and how does it relate to the states of water?
Ans. The water cycle is the continuous process by which water moves through the environment, changing states between solid, liquid, and gas. It includes processes like evaporation (liquid to gas), condensation (gas to liquid), precipitation (water falling as rain or snow), and collection (water gathering in lakes, rivers, and oceans).
5. Can water exist in more than one state at the same time?
Ans. Yes, water can exist in more than one state at the same time, especially in a process called equilibrium. For example, in a container of water at room temperature, you can see liquid water, water vapor in the air above it, and ice if it is present. This demonstrates the coexistence of different states of water.
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