CBSE Class 3 EVS Drop By Drop Worksheet

Question 1. How can we save water? Write a sentence below each picture. (Picture 1: Fixing a leaking tap)
Answer: We should repair leaking taps immediately so that water is not wasted.
In simple words: Fix broken taps to stop water from leaking away.

Exam Tip: Always emphasize stopping leaks as a primary method of water conservation at home.

Question 2. How can we save water? Write a sentence below each picture. (Picture 2: Closing a running tap tightly)
Answer: We must turn off the tap tightly after use to prevent water from overflowing.
In simple words: Do not leave taps running when they are not in use.

Exam Tip: Simple daily habits like turning off taps save gallons of water.

Question 3. How can we save water? Write a sentence below each picture. (Picture 3: Collecting rain water in a container)
Answer: Rainwater harvesting should be practiced by collecting rainwater in containers for future use.
In simple words: Collect rainwater to use it later for household chores.

Exam Tip: Mention rainwater harvesting as a key method to overcome water scarcity.

Question 4. How can we save water? Write a sentence below each picture. (Picture 4: Storing water in an underground tank or large storage tank)
Answer: Water can be stored in large rooftop tanks or underground tanks for domestic purposes during dry seasons.
In simple words: Store water safely in tanks so it is available when needed.

Exam Tip: Storage tanks help maintain a reserve supply during water shortages.

1. Fill in the blanks:

Question I. We should not waste even a single ________ of water.
Answer: drop
In simple words: Every single drop of water is precious.

Exam Tip: Remember the title of the chapter, "Drop by Drop", to recall this answer easily.

Question II. Water is essential for all ________ things.
Answer: living
In simple words: Plants, animals, and humans all need water to survive.

Exam Tip: Life cannot exist without water.

Question III. Collecting rain water for use at some later time is called________.
Answer: rainwater harvesting
In simple words: Saving rainwater for future use is rainwater harvesting.

Exam Tip: Learn the correct spelling of rainwater harvesting.

Question IV. Various are/present ________ in polluted water.
Answer: germs (or harmful bacteria / diseases)
In simple words: Dirty water contains tiny harmful germs that make us sick.

Answer: Polluted (or Dirty)
In simple words: We should never drink unclean or contaminated water.

Exam Tip: Drinking impure water causes diseases like typhoid and cholera.

Question VI. Almost three quarters of the earth's surface is covered with________.
Answer: water
In simple words: Most of the Earth is covered with water oceans.

Exam Tip: Earth is often called the blue planet because of abundant water.

Question VII. Tanks are made underground to store________.
Answer: water
In simple words: Underground tanks store water safely for later use.

Exam Tip: Underground tanks keep stored water cool and clean.

Question VIII. Plants need water to________.
Answer: grow (or make food / survive)
In simple words: Water helps plants grow green and healthy.

Answer: closing taps properly (or reusing water / rainwater harvesting)
In simple words: Careful usage prevents water wastage.

Exam Tip: Mention practical conservation methods.

2. Write "T" for true and "F" for false statement:

Question I. Water can be reused.
Answer: T
In simple words: Water used for washing vegetables can be used to water plants.

Exam Tip: Reusing water is an effective conservation strategy.

Question II. Rain water harvesting increase the effect of floods.
Answer: F
In simple words: Rainwater harvesting actually reduces flooding by storing excess rainwater.

Answer: T
In simple words: Rainwater is collected and stored for future needs.

Answer: F
In simple words: Many parts of India face severe water shortages during summer.

Answer: T
In simple words: We must use only as much water as we need without wasting it.

Answer: T
In simple words: Slightly used household water is great for plants.

Answer: T
In simple words: Flushing toilets does not require pure drinking water.

Answer: T
In simple words: Clean runoff from washing produce can be given to birds and animals.

Answer: T
In simple words: Kitchen wastewater can be used to clean floors.

Answer:  (a) Reservoirs

Question. Sita lives in a small village. She drinks boiled water. Boiled water helps in-
(a) Killing germs
(b) tastes better
(c) keeping water cool
Answer : (a) Killing germs

Question. Match the following –
1. Underground water a.
2. Water through pipeline b.
3. Main source of water c.
Answer : 1 – c 2 – b 3- a

Question. Write True or False
1. Rain water is used to fill the underground Tankas ( )
2. Avoid leaving running tap while brushing or washing hands ( )
Answer : 1. True 2.True

Question. Answer in one word
1. Which animal is used in pulling carts in desert areas? ___________
2. Name the reason from which Madho’s mother and sister have blisters in their feet while fetching water from the pond ___________.
Answer : 1. Camel 2. Hot sand

Please refer to attached file for CBSE Class 3 EVS Practice Worksheets (33)-Drop By Drop