12. Friction 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 12. Friction 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:
12. Friction
1. Chapter Review
Chapter review:
- Friction opposes the relative motion between two surfaces in contact. It acts on both the surfaces.
- The force of friction always opposes the applied force.
- Spring balance is a device used for measuring the force acting on an object.
- Friction can also produce heat. Vigorously rub your palms together for a few minutes.
- Friction depends on the nature of surfaces in contact.
- The substances which reduce friction are called lubricants.
- When one body rolls over the surface of another body, the resistance to its motion is called the rolling friction.
- When one body slides over the surface of another body, the resistance to its motion is called the sliding friction.
- Static friction comes into play when we try to move an object at rest.
- Rolling friction is smaller than the sliding friction.
- Sliding friction is smaller than static friction.
- The frictional force exerted by fluids is also called drag.
- Friction can be increased by making a surface rough.
- Friction can be reduced by using lubricants.
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