Unit Test (Solutions): Water- A Precious Gift

Time: 1 Hour
M.M.: 20
Attempt all questions.

• Question numbers 1 to 5 carry 1 mark each.
• Question numbers 6 to 8 carry 2 marks each.
• Question numbers 9 to 11 carry 3 marks each.

Q1: The main source of fresh water is (1 Mark)
(i) rivers
(ii) rainfall
(iii) sea
(iv) taps

Ans: (ii)

Rainfall is the main source of fresh water on the Earth.

Q2: Water is stored in different ways such as (1 Mark)
(i) ponds, lakes and tanks
(ii) buckets only
(iii) glasses
(iv) toys

Ans: (i)

Water is stored in ponds, lakes, tanks and wells for future use.

Q3: We must keep water (1 Mark)
(i) dirty
(ii) clean
(iii) wasted
(iv) hidden

Ans: (ii)

We must keep water clean so that it is safe for drinking and other daily activities.

Q4: Every household stores water for (1 Mark)
(i) playing only
(ii) daily use
(iii) throwing away
(iv) selling

Ans: (ii)

Every household stores water for daily use such as cooking, drinking, washing and cleaning.

Q5: We face problems with water related to (1 Mark)
(i) quality and quantity
(ii) colour only
(iii) taste only
(iv) smell only

Ans: (i)

We face problems related to both the quality and quantity of water.

Q6: Name any two natural places where rainwater is collected and stored. (2 Marks)

Ans: Rainwater is collected and stored naturally in many places.
Two such natural places are ponds and lakes, where rainwater gathers and is used by people, animals, and plants.

Q7: Why is water called a precious gift? (2 Marks)

Ans: Water is called a precious gift because it is essential for all living beings.
We need water every day for drinking, cooking, cleaning, and staying healthy, and life is not possible without water.

Q8: What happens to rainwater after it falls on the ground? Write any two points. (2 Marks)

Ans: After rainwater falls on the ground, different things happen to it.
First, some rainwater gets absorbed into the soil and becomes underground water.
Second, some rainwater flows into ponds, streams, rivers, and lakes.

Q9: How does rainwater reach our homes? (3 Marks)

Ans: Rainwater reaches our homes through different steps.
1. Rainwater is collected in natural sources like rivers, lakes, wells, and underground water.
2. This water is cleaned and stored in large tanks or reservoirs.
3. Clean water is then supplied to our homes through pipes and taps.

Q10: Explain why we must save water. (3 Marks)

Ans: We must save water because it is a limited and precious resource.
1. Clean water is necessary for drinking, cooking, and good health.
2. In many places, people do not get enough water every day.
3. Saving water ensures that future generations also have enough water.

Q11: Write any three ways to save water at home. (3 Marks)

Ans: We can save water at home by following good habits.
1. We should turn off the tap when it is not in use, such as while brushing our teeth.
2. We should repair leaking taps and pipes as soon as possible.
3. We should reuse water, for example by using leftover water to water plants.