Class 8 Science — Chapter 12: Some Natural Phenomena
72 practice questions · 24 Easy · 24 Medium · 24 Hard
Practise Class 8 Science Chapter 12, "Some Natural Phenomena", with 72 NCERT-aligned multiple-choice questions. The set is split into 24 Easy, 24 Medium and 24 Hard questions, so you can warm up on the fundamentals and then push into the exam-level problems that separate top scorers in CBSE Board exams.
"Some Natural Phenomena" is one of the chapters where concept clarity across physics, chemistry and biology basics really pays off. Each MCQ on this chapter is timed and uses exam-grade marking (+2 correct, −1 wrong, 0 skipped), training the same accuracy-under-pressure that real papers demand. Every question carries a short explanation, so a wrong answer becomes a quick lesson rather than a dead end — the fastest way to close gaps before a test.
Use this chapter as targeted revision: attempt the Easy set first to confirm your basics on Some Natural Phenomena, then move to Medium and Hard to test application and problem-solving. Your accuracy, streaks and XP save automatically, and the chapter feeds into your overall Class 8 Science mastery score. A few sample questions are shown below; sign in free to practise all 72.
Key concepts: Some Natural Phenomena (Class 8 Science)
This chapter covers two natural phenomena linked to charge and Earth's interior — lightning (static electricity) and earthquakes.
- Charging by rubbing
- Rubbing transfers charge; like charges repel and unlike charges attract (tested with an electroscope).
- Electric discharge & lightning
- Lightning is a large electric discharge between charged clouds (or cloud and ground).
- Lightning safety
- Take shelter indoors; lightning conductors on tall buildings safely carry the charge to the ground.
- Earthquakes
- Sudden shaking of the ground caused by movement of tectonic plates along fault lines.
- Seismic measurement & safety
- Earthquakes are recorded by a seismograph and rated on the Richter scale; quake-resistant buildings reduce damage.
💡 Exam tips for Some Natural Phenomena
- Lightning is a giant electric discharge; a lightning conductor protects buildings by safely earthing it.
- Earthquakes are caused by tectonic plate movements and measured on the Richter scale.
Sample questions
There are two kinds of electric charges:
Electric charges are of two types: positive and negative.
Two balloons rubbed on hair are brought close and move apart. This shows they carry:
Both balloons gain the same kind of charge, and like charges repel, pushing them apart.
Assertion (A): Tall buildings are fitted with lightning conductors. Reason (R): A conductor provides an easy path for lightning's charge to reach the earth, protecting the building. Choose the correct option.
Conductors safely earth the charge, which is exactly why they protect buildings — R explains A.
Some Natural Phenomena — FAQs
What are the key concepts in Class 8 Science Some Natural Phenomena?+
This chapter covers two natural phenomena linked to charge and Earth's interior — lightning (static electricity) and earthquakes. Key ideas include Charging by rubbing, Electric discharge & lightning, Lightning safety, Earthquakes, Seismic measurement & safety.
What does Class 8 Science Chapter 12 (Some Natural Phenomena) cover on XamBaaz?+
It covers 72 NCERT-aligned MCQs on "Some Natural Phenomena" — 24 Easy, 24 Medium and 24 Hard — each with a timed quiz and an instant explanation, suitable for CBSE Board exams.
Are these "Some Natural Phenomena" questions free to practise?+
Yes — sign in with Google to practise "Some Natural Phenomena" free. Full unlimited access is ₹999/year (limited-time launch price), with no per-chapter charges.
How should I revise "Some Natural Phenomena" for the exam?+
Start with the Easy quiz to confirm your fundamentals, then attempt Medium and Hard for application-level practice. Review each explanation, retry the questions you miss, and track your accuracy on this chapter until it is consistently high.
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