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SAI INTERNATIONAL SCHOOL
Class-7

Home Assignment
Subject-Physics
Ch. - Water: The Life-giving Liquid

Subtopic- Introduction to water, its form and Water Cycle

INSTRUCTIONS:
Please solve or paste the worksheet in the Physics Copy.
For Assertion& Reason question follow the following directions.
DIRECTION: Each of these questions contains an Assertion followed by Reason. Read
them carefully and answer the question on the basis of following options. You have to
select the one that best describes the two statements.
(a) If both Assertion and Reason are correct and Reason is the correct explanation of
Assertion.
(b) If both Assertion and Reason are correct, but Reason is not the correct explanation of
Assertion.
(c) If Assertion is correct but Reason is incorrect.
(d) If Assertion is incorrect but Reason is correct
(e) If Assertion & Reason both are incorrect.
Sl.No QUESTIONS MARKS

Assertion: Water is not essential for the existence of life. 1
1 Reason: Animals and plants use water for preparation
their food.

Which is the process through which water continuously 1
changes its forms?
a) Water Cycle
2
b) Food Cycle
c) Rain
d) All of these
About .......... of water present on earth is salt water found 1
in the oceans
a) 97%
3 b) 70%
c) 29%
d) 0.003%

Water cycle does not involve which of the following? 1
(a) Evaporation

4 (b) Condensation

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