15. Some Natural Phenomena Class 8 Science [LATEST] Solutions Chapter Review in English - CBSE Study
NCERT Solutions for Class 8 Science are carefully prepared according to the latest CBSE syllabus and NCERT textbooks to help students understand every concept clearly. These solutions cover all important 15. Some Natural Phenomena with detailed explanations and step-by-step answers for better exam preparation. Each Chapter Review is explained in simple language so that students can easily grasp the fundamentals and improve their academic performance. The study material is designed to support daily homework, revision practice, and final exam preparation for Class 8 students. With accurate answers, concept clarity, and structured content, these NCERT solutions help learners build confidence and score higher marks in their examinations. Whether you are revising a specific topic or preparing an entire chapter, this resource provides reliable and syllabus-based guidance for complete success in Science.
Class 8 English Medium Science All Chapters:
15. Some Natural Phenomena
1. Chapter Review
Chapter Review:
- Lightning is caused by the accumulation of charges in the clouds.
- Lightning is a natural phenomenon which occurs in the sky h clouds sparkwit.
- This is a device by which it is identified of charge on an object is carrying or not. This device is known as electroscope.
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The process of transferring of charge from a charged object to the earth is called earthing.
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When a plastic comb is rubbed with dry hair, it acquires a small charge. These objects are called charged objects.
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The electrical charges produced by rubbing are called static charges.
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There are two kinds of charges — positive charge and negative charge.
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Like charges repel and unlike charges attract each other.
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Negative and positive charges meet, producing streaks of bright light and sound. The process is called an electric discharge.
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The disturbance deep down inside the uppermost layer of the earth called the crust.
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The outermost layer of the earth is not in one piece. It is fragmented. Each fragment is called a plate.
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The plates are the weak zones where earthquakes are more likely to occur. The weak zones are also known as seismic or fault zones.
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The power of an earthquake is expressed in terms of a magnitude on a scale called Richter scale.
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The tremors produce waves on the surface of the earth. These are called seismic waves. The waves are recorded by an instrument called the seismograph.
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Earthquake is caused by a disturbance deep inside the earth’s crust.
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