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NCERT Solutions for Class 8 Science Chapter 12 Some Natural Phenomena
Edited By Vishal kumar | Updated on Jun 26, 2025 12:20 PM IST
NCERT solutions of class 8 science Some Natural Phenomena tells us about the occurrence of some of the powerful forces of nature. The chapter explains how lightning strikes during thunderstorms and why the ground shakes during earthquakes. We also learn the safety procedures one must follow during these events. NCERT Class 8 Science Solutions has been prepared by experts at Careers360 and gives you detailed answers to all the exercise questions. It explains all questions in simple steps and helps students gain a better understanding of the chapter.
This Story also Contains
- NCERT Solutions for Class 8 Science Chapter 12: Download PDF
- NCERT Solutions Some Natural Phenomena Class 8: Exercise Questions
- NCERT Solutions for Class 8 Science Chapter 12: Topics
- NCERT Solutions for Class 8 Science Chapter 12: Important Concepts
- Approach to solve the NCERT Class 8 Science Chapter 12 Questions
NCERT Solutions for Class 8 of Some Natural Phenomena includes 12 questions, which are a mix of True/False, MCQ, and short answer questions. For exam preparation, students can follow the approach to this chapter and view the topics covered. Students can also access the important concepts in the chapter and view them at a glance for last-minute revision. The PDF version of the NCERT Solutions is a great help for exam preparation and scoring well without stress.
NCERT Solutions for Class 8 Science Chapter 12: Download PDF
Download the NCERT Solutions of Class 8 Science Some Natural Phenomena using the link below. The PDF version of the NCERT Solution is useful for offline access and anytime revision.
NCERT Solutions Some Natural Phenomena Class 8: Exercise Questions
(a) A plastic scale
(b) A copper rod
(c) An inflated balloon
(d) A woollen cloth.
Answer:
(b) A copper rod cannot be charged easily by friction.
Q2. When a glass rod is rubbed with a piece of silk cloth the rod
(a) and the cloth both acquire positive charge.
(b) becomes positively charged while the cloth has a negative charge.
(c) and the cloth both acquire negative charge.
(d) becomes negatively charged while the cloth has a positive charge.
Answer:
(b) becomes positively charged while the cloth has a negative charge, some electrons from the rod gets transferred to the cloth.
Q3 . Write T against true and F against false in the following statements.
( a ) Like charges attract each other (T/F)
( b ) A charged glass rod attract a charged plastic straw (T/F)
( c ) Lightning conductor cannot protect a building from lightning (T/F)
( d ) Earthquakes can be predicted in advance (T/F)
Answer:
(a) False, like charges, repel each other and unlike charges attract each other.
(b) True, a charged glass rod is positively charged while a charged plastic straw is negatively charged.
(c) False, lightning conductor rod provides an easy route for the transfer of electric charge to the ground hence is used to protect buildings from the effect of lightning.
(d) False, prediction of the earthquake in advance has not been yet invented but we can determine the magnitude of the earthquake.
Q4 . Sometimes, a crackling sound is heard while taking off a sweater during winters. Explain.
Answer:
A cracking sound is heard while taking off a sweater during winters because of electric discharge where positive and negative charges meet, releases some energy in the form of streaks of bright light and sound.
Q5 . Explain why a charged body loses its charge if we touch it with our hand.
Answer:
A charged body loses its charge if we touch it with our hand because of earthing. Our body is a good conductor of electricity so, there is charge transfer from the charged body to the earth.
Answer:
The destructive energy of an earthquake is measured on the Richter scale. If an earthquake measures 3 on this scale then it would be recorded by a seismograph and it is not more likely to cause much damage.
Q7 . Suggest three measures to protect ourselves from lightning.
Answer:
Three measures to protect ourselves from lightning are:
(i) We should not use telephone cords, electrical wires and metal pipes instead use mobile phones and cordless phones.
(ii) Bathing should be avoided during thunderstorms to avoid contact with running water.
(iii) If you are outside, then stay far away from tall trees, poles or other metal objects.
Answer:
A charged balloon is repelled by another charged balloon as they both have same charges and as we know like charges repel each other, while an uncharged balloon has no charge and is different from the charged balloon hence they attract each other.
Q9 . Describe with the help of a diagram an instrument which can be used to detect a charged body.
Answer:
An electroscope device is used to determine whether an object is carrying charge.
When the metal strips repel each other proves that the body is charged because repulsion is the sure test to detect that a body is charged or not.
Q10 . List three states in India where earthquakes are more likely to strike.
Answer:
Three states in India where earthquakes are more likely to strike are:
(i) Kashmir
(ii) Gujarat
(iii) Assam.
Answer:
The precautions that we would take to protect ourselves from the earthquake are:
(i) Take shelter under a table and stay there till the shaking stops.
(ii) Find a clear spot, away from buildings, trees, and overhead power lines. Drop to the ground.
(iii) If you are in a car or a bus, do not come out. Ask the driver to drive slowly to a clear spot. Do not come out until the tremors stop.
Answer:
No, carrying an umbrella is not at all a good idea during thunderstorms. Wide objects like umbrella are more prone to get struck by lightning.
NCERT Solutions for Class 8 Science Chapter 12: Topics
Topics for some natural phenomena class 8 solutions are given below:
- Lightning
- Charging by Rubbing
- Types of Charges and Their Interaction
- Transfer of Charge
- The Story of Lightning
- Lightning Safety
- Earthquakes
NCERT Solutions for Class 8 Science Chapter 12: Important Concepts
Lightning
-
Lightning is caused by the accumulation of positive and negative charges in clouds.
-
Lightning conductors are used to protect buildings from lightning strikes.
-
Charging by Rubbing
-
When two objects are rubbed together, they gain or lose electrons and become electrically charged.
-
-
Types of Charges and Their Interaction
-
There are two types of charges: Positive (+) and Negative (−).
-
Like charges repel, unlike charges attract.
-
-
Transfer of Charge
-
Charge can be transferred from one object to another by contact or conduction.
-
-
The Story of Lightning
-
Caused by the accumulation of charges in clouds; when the potential difference becomes large, discharge occurs.
-
-
Lightning Safety
-
Stay indoors during thunderstorms.
-
Avoid using electrical appliances, standing under trees, or touching metal objects.
-
Earthing
Earthing is the process of transferring excess electric charges from a charged object to the Earth, ensuring safety by preventing electrical hazards. It is commonly used in electrical systems to prevent shocks and fires and is essential in lightning protection for tall structures.
Earthquakes
-
Earthquakes are caused by the movement of Earth's plates along fault lines.
-
The Richter scale is used to measure the magnitude of earthquakes.
-
Major earthquakes can cause significant damage to life and property.
Protection Against Earthquakes
-
Buildings in seismic zones should be designed to withstand earthquakes.
-
Precautions include using lightweight construction materials, securing heavy objects, and having fire-fighting equipment.
Approach to solve the NCERT Class 8 Science Chapter 12 Questions
NCERT Solutions for Class 8 Science Chapter 12 Some Natural Phenomena is very important for exams. For this chapter, you need to understand the basics of charge, which will help you understand lightning. This includes how charges build up in the clouds and the nature of lightning. Earthing is an important concept, which is an essential requirement as per modern safety standards. Along with this, understanding earthquakes, their cause, and how to measure them is also discussed in the chapter. One must understand these phenomena and the different keywords related to them.
NCERT Chapter-Wise Solutions For Class 8th Science
The chapter-wise NCERT solutions for all the science chapters are listed here along with their links:
NCERT Solutions For Class 8: Subject-Wise
Also Check NCERT Books and NCERT Syllabus here:
Frequently Asked Questions (FAQs)
1. What are the topics covered in NCERT Class 8 Science chapter 12?
Here are the topics covered in NCERT Class 8 Science chapter 12
- These topics are as follows:
- Lightning
- Charging by Rubbing
- Types of Charges and Their Interaction
- Transfer of Charge
- The Story of Lightning
- Lightning Safety
- Earthquakes
2. Which instrument used to detect earthquake?
A seismograph instrument is used to detect earthquakes.
3. How do NCERT Solutions for Class 8 Science Chapter 12 help students with their exam preparation?
NCERT Solutions for Class 8 Science Chapter 12 are prepared by subject matter experts, and they cover all the important topics and concepts in the chapter. The solutions are written in clear and simple language, making it easy for students to understand and learn. By referring to the NCERT solutions, students can get a better understanding of the topics covered in the chapter, and this can help them score better in the exams.
4. What will I gain by learning Chapter 12 of NCERT Solutions for Class 8 Science?
Learning Chapter 12 of NCERT Solutions for Class 8 Science can provide several benefits such as understanding the natural phenomena, gaining knowledge about lightning and how it occurs, understanding the concept of thunderstorms and the safety measures to be taken during such situations. It can also help students learn about earthquakes, its causes, and the methods to stay safe during an earthquake. Overall, learning this chapter can help students understand the natural world and stay prepared to face any such natural calamities.
5. What is earthing?
Earthing is a connection made to the earth to transfer excess charge from objects. This is done to protect against lightning strikes and shocks.
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