Question 1 :
State True or False: Washing a handkerchief requires more than one bucket of water.

Question 3 :
State True or False: Water flows down the mountains in the form of streams and rivers.

Question 4 :
State True or False: The loss in the level of groundwater is due to under use.

Question 5 :
Suppose for some reason your family gets only one bucket of water everyday for a week. Imagine what would happen? Would you be able to cook, clean utensils, wash clothes or bathe?

Question 6 :
State True or False: Washing clothes does not require more than a bucket of water.

Question 7 :
State True or False: Water of some rivers flows into lakes.

Question 9 :
We know that some of the fibres that we use for making fabric come from plants. Is water not needed to grow these?

Question 10 :
State True or False: Most of the water that falls on the land as rain and snow, sooner or later goes back to a sea or an ocean.

Question 12 :
State True or False: We can use all the water available on the earth's surface.

Question 14 :
The evaporation of water takes place only in sunlight. TRUE or FALSE?

Question 15 :
Fill in the blanks. Water goes into the atmosphere and forms ___________.

Question 16 :
Paheli has noticed dew on leaves of grass on winter mornings. Did you notice something similar on leaves or metal surfaces like iron grills and gates on a cold morning?

Question 17 :
Dissolve two spoons of common salt in half a cup of water. Now if you want to get the salt back, What will you do?

Question 18 :
State True or False: Brushing your teeth requires less than one bucket of water.

Question 19 :
The process of changing of water into its vapour is called ......................... .

Question 21 :
Fill in the blank: In those areas where the land has little or no vegetation, the rainwater flows away _________.

Question 22 :
Which of the following activity does not involve use of water?

Question 23 :
Most of the water is in the oceans and it cannot be used directly. Why?

Question 24 :
Most of the water that falls on the land as rain and snow sooner or later goes back to the oceans.

Question 25 :
State True or False: Open wells are fed by river water.

Question 26 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c6f1f59b460d7261e65e.jpg' /> A person takes two similar plates. He places one of the plates in sunlight and keeps the other under shade. Now, he pours equal amount of water in each of the plates as shown in the figure. He then observes the two plates after every 15 minutes. What is the source of heat for this evaporation?

Question 27 :
Fill in the blanks. Transpiration is a process in which plants _____.

Question 28 :
State True or False: Flowing rainwater also takes the lower layer of the soil away with it.

Question 30 :
Water kept in sunlight gets heat from sun and is evaporated. Does water kept under the shade of a tree also gets evaporated ?