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You can read and download free PDF worksheets for CBSE Class 8 Science Chapter 15 Some Natural Phenomena. These some natural phenomena class 8 worksheets are designed for students and teachers of Class 8 Science, as per the latest CBSE syllabus and examination pattern.
The worksheets cover important topics and questions related to various natural phenomena. Class 8 students can practice the some natural phenomena class 8 worksheets with answers to improve their knowledge and understanding of this chapter.
These free printable some natural phenomena class 8 worksheets PDF have been prepared by school teachers following the latest NCERT Solutions and CBSE class 8 syllabus guidelines. Students should solve the problems and practice the solutions regularly to score better in school exams and tests.
Practicing these CBSE class 8 science some natural phenomena worksheets will help you learn about the fascinating natural processes that shape our world. Download the free PDF and start exploring the wonders of science today!
Worksheet for Class 8 Science Chapter 15 Some Natural Phenomena
Class 8 students can use this printable worksheet in PDF for Chapter 15 “Some Natural Phenomena” to prepare for exams and get good marks.
Some Natural Phenomena Class 8 Worksheets with Answers
Multiple-Choice Questions (MCQs)
- An electroscope is a device which is used to find if an object is:
- (a) charged
- (b) magnetic
- (c) free of cracks
- (d) hot
Answer: (a) charged
Explanation: An electroscope is used to detect the presence of electric charge on an object.
- Electric current is to be passed from one body to another. For this purpose the two bodies must be joined by:
- (a) cotton thread
- (b) plastic string
- (c) copper wire
- (d) rubber band
Answer: (c) copper wire
Explanation: Copper wire is a good conductor of electricity and allows electric current to pass through it.
- The movement of the earth’s plates causes:
- (a) cyclones
- (b) lightning
- (c) earthquakes
- (d) thunderstorms
Answer: (c) earthquakes
Explanation: The movement of the earth’s plates can cause earthquakes due to the release of energy along fault lines.
- Two charged objects are brought close to each other. Choose the most appropriate statement from the following options:
- (a) they may attract
- (b) they may repel
- (c) they may attract or repel depending on the type of charges they carry
- (d) there will be no effect
Answer: (c) they may attract or repel depending on the type of charges they carry
Explanation: Objects with opposite charges attract, while objects with the same charges repel each other.
- Which of the following is not likely to cause Tsunami?
- (a) A major nuclear explosion under sea
- (b) Earthquake
- (c) Volcanic eruption
- (d) Lightning
Answer: (d) Lightning
Explanation: Lightning does not affect the ocean floor or cause large-scale water displacement required to generate a tsunami.
- The earth’s plate responsible for causing earthquakes is:
- (a) the crust of the earth
- (b) the mantle of the earth
- (c) the inner core of the earth
- (d) the outer core of the earth
Answer: (a) the crust of the earth
Explanation: Earthquakes are caused by the movement of tectonic plates in the earth’s crust.
- Consider the list of terms given below:
- (i) Seismic Zone
- (ii) Fault Zone
- (iii) Mantle
- (iv) Inner Core
The boundaries of the earth’s plate are known as:
- (a) (i) & (ii)
- (b) (i) & (iii)
- (c) (iii) & (iv)
- (d) (ii), (iii) & (iv)
Answer: (a) (i) & (ii)
Explanation: The boundaries of the earth’s plates are often referred to as seismic zones or fault zones.
- The outermost layer of earth is called:
- (a) mantle
- (b) outer core
- (c) crust
- (d) inner core
Answer: (c) crust
Explanation: The crust is the outermost solid layer of the Earth.
- Major earthquakes are less likely to occur in:
- (a) North East India
- (b) Rajasthan
- (c) Rann of Kutch
- (d) Orissa
Answer: (d) Orissa
Explanation: Orissa is not located near major fault lines, making it less prone to major earthquakes compared to other regions.
- Consider the list of terms given below:
- (i) Tsunami
- (ii) Landslide
- (iii) Floods
- (iv) Lightning
Earthquakes can cause:
- (a) (i), (ii) & (iii)
- (b) (ii) & (iv)
- (c) (ii), (iii) & (iv)
- (d) (iii) & (iv)
Answer: (a) (i), (ii) & (iii)
Explanation: Earthquakes can cause tsunamis, landslides, and floods but not lightning.
Very Short Answer Questions
Ques: State whether the following are True or False.
-
- (a) Earthquakes occur all the time all over the world.
Answer: True
-
- (b) The plates of the outermost layer of the earth are always in continuous motion.
Answer: True
-
- (c) Tremors on the earth can also be caused by the eruption of a volcano.
Answer: True
-
- (d) The process of electric discharge cannot occur between clouds and the earth.
Answer: False
-
- (e) Bathing outdoors should be avoided during thunderstorm.
Answer: True
Ques: Is it possible to predict the occurrence of an earthquake?
Answer: No, it is not possible to predict the exact time and location of an earthquake with current technology.
Ques: If a charged plastic straw is brought near another uncharged plastic straw, what will happen?
Answer: The uncharged plastic straw will be attracted to the charged plastic straw due to induced charge.
Ques: The aluminium strips in an electroscope are replaced by plastic strips and a charged body is brought in contact with the metal clip. What will happen?
Answer: The plastic strips will not show any deflection because plastic is an insulator and does not conduct electricity.
Ques: Plastic straws A and B are rubbed with dry cotton cloth. What will happen if they are brought near each other?
Answer: Plastic straws A and B will repel each other because they both acquire similar charges after being rubbed with the cotton cloth.
Short Answer Questions
Ques: During the construction of a building the lightning conductor was left hanging in the air by mistake. Would the lightning conductor be still effective? Explain.
Answer: No, the lightning conductor would not be effective because it needs to be properly grounded to safely conduct the electrical charge from a lightning strike to the ground.
Ques: If air and cloud were good conductors of electricity, do you think lightning could occur? Explain.
Answer: No, if air and clouds were good conductors of electricity, the charges would not accumulate to the extent required for lightning to occur, as they would be continuously discharged.
Ques: Identify the lightning conductor and the copper plate in Fig. 15.2.
Answer: The lightning conductor is the rod extending above the building, and the copper plate is buried in the ground to provide a path for the electrical discharge to safely reach the earth.
Ques: If the materials used for constructing a building were good conductors, do you think lightning will strike the building? Will the lightning conductor be still required to be installed in the building?
Answer: Lightning could still strike the building even if it is made of conductive materials. A lightning conductor is still required to provide a controlled path for the lightning discharge to reach the ground safely, preventing damage to the building.
Ques: You might have observed on a dry day that when you touch the screen of a television or computer monitor (with picture tube), you get a slight shock. Why does it happen?
Answer: This happens due to the build-up of static electricity on the screen, which discharges when you touch it, giving you a slight shock.
Ques: Explain how does lightning conductor protects a building from getting struck by lightning.
Answer: A lightning conductor is a metal rod mounted on top of a building, connected to the ground with a wire. It provides a path of least resistance for the electric discharge from lightning, safely directing it into the ground and protecting the building.
Ques: In an electroscope if a negatively charged body is brought in contact with the metal clip, the strips of the electroscope diverge. If now another charged object carrying equal amount of positive charge is brought in contact with the clip, what will happen?
Answer: The strips of the electroscope will converge and return to their original position because the positive charge will neutralize the negative charge, bringing the electroscope back to a neutral state.
Ques: The strips of an electroscope diverge when a charged body is brought in contact with the metal clip. Now the clip is touched gently by our hand. What will happen to the strips? Explain.
Answer: The strips will collapse because the charge will be conducted away through your body to the ground, neutralizing the electroscope.
Long Answer Questions
Ques: Explain how lightning takes place.
Answer: Lightning occurs due to the build-up of electrical charges in clouds. When the potential difference between the cloud and the ground (or between clouds) becomes very large, it overcomes the resistance of the air, causing a discharge of electricity. This discharge ionizes the air, creating a bright flash of light and a powerful shockwave (thunder).
Ques: Mention three precautions that you will take to protect yourself if an earthquake strikes when you are inside the house.
Answer:
- Drop to the ground, take cover under a sturdy table or piece of furniture, and hold on until the shaking stops.
- Stay away from windows, glass, and heavy objects that could fall.
- Do not use elevators; use stairs to evacuate if necessary.
Ques: Explain why it is safer to use a wireless telephone instead of a landline telephone during lightning.
Answer: It is safer to use a wireless telephone during lightning because a landline telephone can conduct the electrical discharge from a lightning strike directly to the user, potentially causing severe injury or death.
Ques: What precautions would you take if lightning occurs while you are outside the house?
Answer:
- Seek shelter in a building or car.
- Avoid open fields, tall trees, and metal objects.
- Stay away from water bodies, such as lakes or ponds.
Ques: If 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 strips? Explain.
Answer: No, there will be no effect on the aluminium strips because ebonite is an insulator and does not conduct electricity. Therefore, the charge will not be transferred to the aluminium strips, and they will not diverge.
Some Natural Phenomena Class 8 Worksheets PDF
In this Some Natural Phenomena class 8 worksheets PDF we will learn about the amazing things that happen in nature. These are called “natural phenomena.” We will explore cool things like the Northern Lights and snowflakes, and find out how they are made. Understanding these natural processes can help us appreciate the beauty of our planet.
CBSE Class 8 Science Chapter 15 Worksheet: Some Natural Phenomena
We hope students liked the above worksheet for Chapter 15 “Some Natural Phenomena” designed as per the latest syllabus for Class 8 Science released by CBSE. Students of Class 8 should download the worksheet in PDF format and practice the questions and solutions given in it on a daily basis.
All the latest worksheets with answers have been developed for Science by referring to the most important and regularly asked topics that the students should learn and practice to get better scores in their class tests and examinations. Infinitylearn is the best portal for Class 8 students to get all the latest study material free of cost.
Worksheet for Science CBSE Class 8 Chapter 15 Some Natural Phenomena
Expert teachers of Infinitylearn have referred to the NCERT book for Class 8 Science to develop this worksheet. If you download and practice the worksheet for one chapter daily, you will get higher and better marks in Class 8 exams this year as you will have stronger concepts.
Daily practice of the Science worksheet and its study material will help students to have a stronger understanding of all concepts and also make them experts on all scoring topics. You can easily download and save all revision worksheets for Class 8 Science also from www.Infinitylearn.com without paying anything in PDF format. After solving the questions given in the worksheet, which have been developed as per the latest course books, also refer to the NCERT solutions for Class 8 Science designed by our teachers.
Chapter 15 Some Natural Phenomena Worksheet Science CBSE Class 8
All the worksheets given above for Class 8 Science have been made as per the latest syllabus and books issued for the current academic year. The students of Class 8 can be assured that the answers have also been provided by our teachers for all the worksheets of Science so that you can solve the questions and then compare your answers with the solutions provided by us.
We have also provided a lot of MCQ questions for Class 8 Science in the worksheet so that you can solve questions relating to all topics given in each chapter. All the study material for Class 8 Science students have been given on Infinitylearn.
Chapter 15 Some Natural Phenomena CBSE Class 8 Science Worksheet
Regular worksheet practice helps to gain more experience in solving questions to obtain a more comprehensive understanding of Chapter 15 “Some Natural Phenomena” concepts. Worksheets play an important role in developing an understanding of this chapter in CBSE Class 8.
Students can download and save or print all the worksheets, printable assignments, and practice sheets of the above chapter in Class 8 Science in PDF format from Infinitylearn. You can print or read them online on your computer or mobile or any other device. After solving these, you should also refer to the Class 8 Science MCQ Test for the same chapter.
Worksheet for CBSE Science Class 8 Chapter 15 Some Natural Phenomena
CBSE Class 8 Science best textbooks have been used for writing the problems given in the above worksheet. If you have tests coming up, then you should revise all concepts relating to Chapter 15 “Some Natural Phenomena” and then take out a print of the above worksheet and attempt all the problems. We have also provided a lot of other Worksheets for Class 8 Science which you can use to further improve your skills in the subject.
Some Natural Phenomena Class 8 Worksheets FAQs
What are the natural phenomena covered in these worksheets?
The worksheets cover a variety of fascinating natural phenomena, such as the Northern Lights, snowflakes, rainbows, and more.
Why is it important to learn about natural phenomena?
Learning about natural phenomena helps us understand the complex processes that shape our world and appreciate the beauty of the natural world around us.
How can these worksheets help me in my studies?
These worksheets are designed to enhance your understanding of scientific concepts related to natural phenomena. They can help you perform better in your class 8 science exams and develop a deeper interest in the subject.
Are the worksheets available in a PDF format?
Yes, the Some Natural Phenomena Class 8 Worksheets are available in a convenient PDF format, which you can download and print for easy reference and practice.
