EASY
7th CBSE
IMPORTANT
Earn 100

Draw and explain a diagram of a drip irrigation system that can be used in a garden.

Important Questions on Water: A Precious Resource

EASY
7th CBSE
IMPORTANT
What is the purpose of building a check dam across a river?
EASY
7th CBSE
IMPORTANT
In what way is a check dam different from a dam built for irrigation or to generate hydroelectricity?
EASY
7th CBSE
IMPORTANT
Write a note on how the building of check dams in the Alwar region of Rajasthan helped to solve water scarcity.
EASY
7th CBSE
IMPORTANT

Draw arrows and label the picture.

Precipitation, infiltration water table, lake, pumping well

EASY
7th CBSE
IMPORTANT
Among the values 9.7% and 2.5%, what is the approximate percentage of the total fresh water on the Earth? 
EASY
7th CBSE
IMPORTANT

From the given activity, calculate approximate percentages of the total water on the Earth. What is the percentage of amount of water in the form of ice? ( 1%, 10%, 60%)

EASY
7th CBSE
IMPORTANT

From the activity, calculate approximate percentages of the total water on the Earth. What is the percentage of amount of water in lakes, rivers and streams? (write only number, do not use percentage symbol.) 10%, 1.5%, 50%

EASY
7th CBSE
IMPORTANT

From the activity described below, calculate these as approximate percentages of the total water on the Earth. Amount of usable groundwater 50%, 20%, 0.14%