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PPT Friction - Science Class 8
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Page 1 Explore the positive and negative impacts of friction in our everyday lives. Friction Page 2 Explore the positive and negative impacts of friction in our everyday lives. Friction Lesson at a Glance What is Friction? Positive Effects of Friction Negative Effects of Friction Page 3 Explore the positive and negative impacts of friction in our everyday lives. Friction Lesson at a Glance What is Friction? Positive Effects of Friction Negative Effects of Friction Think About It! Why is walking on rough pavement easier than on wet, slippery surfaces? Page 4 Explore the positive and negative impacts of friction in our everyday lives. Friction Lesson at a Glance What is Friction? Positive Effects of Friction Negative Effects of Friction Think About It! Why is walking on rough pavement easier than on wet, slippery surfaces? Friction creates heat and even fire! Rubbing sticks together is a traditional fire-starting technique used by early human civilisations. = Did you know? Today, you’ll learn to... Describe what friction is. Identify the positive and negative effects of friction on our daily lives. Page 5 Explore the positive and negative impacts of friction in our everyday lives. Friction Lesson at a Glance What is Friction? Positive Effects of Friction Negative Effects of Friction Think About It! Why is walking on rough pavement easier than on wet, slippery surfaces? Friction creates heat and even fire! Rubbing sticks together is a traditional fire-starting technique used by early human civilisations. = Did you know? Today, you’ll learn to... Describe what friction is. Identify the positive and negative effects of friction on our daily lives. It opposes the direction of the movement of an object. m o t i o n f r i c t i o n It exists when two surfaces are in contact or rubbing against each other. What is Friction?Read More
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FAQs on PPT Friction - Science Class 8
| 1. What is friction? |  |
Ans. Friction is the force that resists the relative motion or tendency of such motion of two surfaces in contact.
| 2. What are the factors that affect friction? | |
Ans. The factors that affect friction include the nature of the surfaces in contact, the force pressing the surfaces together, and the smoothness of the surfaces.
| 3. How does friction affect motion? | |
Ans. Friction can either help or hinder motion. It can help by providing traction for walking or driving, but it can also hinder motion by causing objects to slow down or stop.
| 4. How can friction be reduced? | |
Ans. Friction can be reduced by using lubricants, polishing surfaces to make them smoother, or using ball bearings to reduce the contact area between surfaces.
| 5. What are the different types of friction? | |
Ans. The three main types of friction are static friction (friction between stationary objects), kinetic friction (friction between moving objects), and rolling friction (friction between a rolling object and a surface).
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Mar 13, 2026 Last updated
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