Table of contents |
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Fill in the Blanks |
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True or False |
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Short Questions Answers |
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Assertion and Reason Questions |
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(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.
(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.
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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Worksheet: A Journey through States of Water - 2
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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.
25 videos|177 docs|12 tests
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1. What are the three states of water? | ![]() |
2. How does water change from one state to another? | ![]() |
3. Why is understanding the states of water important? | ![]() |
4. What is the water cycle, and how does it relate to the states of water? | ![]() |
5. Can water exist in more than one state at the same time? | ![]() |