This quiz works best with JavaScript enabled. Home > Class 8 > Class 8 Science Chapter 15 Some Natural Phenomena – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 8 Science Chapter 15 Some Natural Phenomena Quiz 1 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The process of transferring a charge from a charged body to the earth is called A) Hydrolysis. B) Electrolysis. C) Earthing. D) Discharging. Show Answer Correct Answer: C) Earthing. 2. The metal clip used in the electroscope is replaced by an ebonite rod and a charged body is brought in contact with it, will there be any effect on the aluminium strip? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: B) No. 3. What is the charge aquired by a glass rod when rubbed to silk is A) Negative. B) Potiveive. C) Both. D) None. Show Answer Correct Answer: B) Potiveive. 4. The aluminium strips in an electroscope are replaced by plastic strips and a charged body is brought in contact with the metal clip. will the electroscope work? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: B) No. 5. The time, location, and magnitude of an earthquake can be determined from data recorded on a ..... A) Earthquake calculator. B) Seismograph. C) Tremor detector. D) Seismometer. Show Answer Correct Answer: B) Seismograph. 6. In a cloud during Lightning, the Positive charges accumulatein the ..... of the cloud. A) Top. B) Left. C) Right. D) Bottom. E) Center. Show Answer Correct Answer: A) Top. 7. Differences in the temperature between the outer and inner mantles give rise to a movement called ..... in the fluid magma. A) Radiation currents. B) Conduction currents. C) Evaporation currents. D) Convection currents. Show Answer Correct Answer: D) Convection currents. 8. What should not be done during earthquake. A) Take a shelter in the tall building. B) Cover your head with a pillow. C) Run away to an open space. D) All of them. Show Answer Correct Answer: A) Take a shelter in the tall building. 9. Static charge builds up due to the movement of? A) Electrons. B) Protons. C) Both electrons and protons. D) Either protons or electrons. Show Answer Correct Answer: A) Electrons. 10. It is a convention to call the charge acquired by a glass rod when it is rubbed with silk as ..... A) Negative. B) Positive. C) Neutral. D) Can be any one. Show Answer Correct Answer: B) Positive. 11. The flow of charges through a wire is A) Electric current. B) Static current. C) Both. D) None. Show Answer Correct Answer: A) Electric current. 12. A sudden violent shaking of the ground, typically causing great destruction, as a result of movements within the earth's crust or volcanic action. A) Avalanche. B) Earthquake. C) Tsunami. D) Tornado. Show Answer Correct Answer: B) Earthquake. 13. Which force helps in holding the protons and neutrons within the centre of the atom? A) Electrostatic Force. B) Nuclear Force. C) Frictional Force. D) All of the above. Show Answer Correct Answer: B) Nuclear Force. 14. When two clouds having a huge amount of positive and negative charges approach each other, then A) The air becomes good conductor of electricity. B) The air becomes bad conndcutor of electricity. C) None of the above. D) None of the above. Show Answer Correct Answer: A) The air becomes good conductor of electricity. 15. Waves produced on the earth's surface is called A) Seismic waves. B) Longitudinal waves. C) Earth waves. D) None of the above. Show Answer Correct Answer: A) Seismic waves. 16. Who proved that lightning conducts electricity? A) Benjamin Franklin. B) Nikola Tesla. C) Albert Einstein. D) Thomas Edison. Show Answer Correct Answer: A) Benjamin Franklin. 17. Benjamin Franklin showed lightning in A) 1752. B) 1745. C) 1832. D) 1786. Show Answer Correct Answer: A) 1752. 18. Human body can conduct electricity. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 19. The process of transferring of charge from a charged object to the earth is called as ..... A) Richter scale. B) Sesmic waves. C) Tide. D) Earthing. Show Answer Correct Answer: D) Earthing. 20. What is a fracture in bedrock along which blocks of rock on opposite sides of the fracture move? A) Focus. B) Epicenter. C) Intensity. D) Fault. Show Answer Correct Answer: D) Fault. 21. What's the main cause of most earthquakes? A) Pressure from within Earth's crust. B) Hurricanes. C) Human activity. D) Changes in temperature within the earth's mantle. Show Answer Correct Answer: A) Pressure from within Earth's crust. 22. The process of transferring charge from a charged object to the earth is called earthing. A) Partially true. B) Not mentioned. C) False. D) True. Show Answer Correct Answer: D) True. 23. Use of earthing A) Protection from lightning. B) For shelter. C) Protection from leakage of electric current. D) None of the above. Show Answer Correct Answer: C) Protection from leakage of electric current. 24. Which of the Following is not a Natural Phenomenon A) Earthquake. B) Typhoon. C) Lightening. D) Nuclear Explosion. Show Answer Correct Answer: D) Nuclear Explosion. 25. During lightning actually ..... take place. A) Electric discharge. B) Electric charging. C) Electric charge accumulation. D) All the above. Show Answer Correct Answer: A) Electric discharge. 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