Electricity Magnets Water and Air (Class 6)

What this worksheet covers

This is an eighteen-question practice worksheet on electricity, magnets, water and air for Class 6, written to the pattern of the SOF National Science Olympiad (NSO). It carries 24 marks and is designed to be attempted in 45 minutes, split across three sections — Scientific Reasoning, Applying What You Know 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 electricity, magnets, water and air at Class 6 level
• Working accurately against a time limit, as the real paper demands
• Scientific Reasoning questions in the olympiad format
• Applying What You Know 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. Study every diagram and table carefully.

Sample questions from this worksheet

A preview of what's inside Electricity Magnets Water and Air (Class 6) — the PDF has the full set, and every question comes with a worked solution like these.

1. 1. An electric circuit is said to be closed when _______.

   • AThe path is complete and current can flowcorrect
   • BThere is a gap in the path
   • CThe cell is removed
   • DThe bulb is fused
   Solution: A circuit is closed when the path is complete and current can flow all the way from one terminal of the cell, through the components, back to the other terminal. An open circuit has a gap and no current flows.

2. 2. A bar magnet is broken into two pieces. What will each piece have?

   • ABoth a north and a south polecorrect
   • BOnly a south pole
   • COnly a north pole
   • DNo poles at all
   Solution: However many times a magnet is broken, every piece is a complete magnet with both a north and a south pole. A single isolated pole cannot be obtained.

3. 3. Consider the following statements.(i) A magnet attracts all metals.(ii) The earth behaves like a giant magnet.(iii) Air exerts pressure in all directions.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 — only iron, nickel, cobalt and their alloys are attracted; copper, aluminium and gold are not. Statement (ii) is true, which is why a compass needle points north. Statement (iii) is true; this is why a rubber sucker sticks to a smooth wall. Hence (ii) and (iii).