Natural Resources and Environment (Class 5)

What this worksheet covers

This is an eighteen-question practice worksheet on natural resources and our environment for Class 5, written to the pattern of the SOF National Science Olympiad (NSO). It carries 24 marks and is designed to be attempted in 40 minutes, split across three sections — Resources Around Us, Apply and Reason and Achievers Section. Every question is multiple choice with exactly one correct option, and every one comes with a fully worked solution rather than just an answer key — so a child who gets one wrong can see where the reasoning went astray instead of only learning that it did.

Skills your child practises

• Applied problem-solving on natural resources and our environment at Class 5 level
• Working accurately against a time limit, as the real paper demands
• Resources Around Us questions in the olympiad format
• Apply and Reason questions in the olympiad format
• Achievers Section questions in the olympiad format
• Reading worked solutions to find the step that went wrong

How to use it

1. 1There are 18 questions in this worksheet. All questions are compulsory.
2. 2Each question has four options (A), (B), (C) and (D). Exactly one option is correct.
3. 3Questions 1–15 carry 1 mark each. Questions 16–18 (Achievers Section) carry 3 marks each.
4. 4There is no negative marking. Do not use a calculator.
5. 5Study every diagram and table carefully before answering.

Sample questions from this worksheet

A preview of what's inside Natural Resources and Environment (Class 5) — the PDF has the full set, and every question comes with a worked solution like these.

1. 1. Which of the following is not a natural resource?

   • APlastic chaircorrect
   • BSoil
   • CAir
   • DCoal
   Solution: Natural resources are materials obtained directly from nature — air, water, soil, minerals and fuels. A plastic chair is made by people in a factory, so it is a man-made product, even though the plastic itself comes from petroleum.

2. 2. The main purpose of rainwater harvesting is to _______.

   • AStop rivers from flowing
   • BIncrease the amount of rainfall
   • CMake rainwater salty
   • DCollect rainwater and recharge the groundwater instead of letting it run awaycorrect
   Solution: In rainwater harvesting, rain falling on rooftops and open ground is collected in tanks or led into pits so that it soaks into the earth. This stores water for later use and refills the underground water that wells and tube wells draw from. It cannot change how much rain actually falls.

3. 3. Consider the following statements.(i) All the water on the earth is fit for drinking.(ii) Deforestation increases the amount of carbon dioxide in the air.(iii) Sunlight, wind and flowing water are all renewable sources of energy.Which of the statements is/are correct?

   • A(i) and (ii) only
   • B(ii) and (iii) onlycorrect
   • C(i) and (iii) only
   • DAll three
   Solution: Statement (i) is false — over 97% of the earth's water is salty sea water and much of the rest is locked up as ice, so only a tiny fraction is drinkable. Statement (ii) is true; trees absorb carbon dioxide during photosynthesis, so cutting them down leaves more of it in the air. Statement (iii) is true. Hence (ii) and (iii).