Practice Activity 9.1 - 9.1.1 | 9. FRICTION | CBSE 8 Science | Allrounder.ai
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Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What does friction do?

💡 Hint: Think about what happens when you push an object.

Question 2

Easy

Which surfaces create more friction - rough or smooth?

💡 Hint: Consider your experience walking on a smooth vs. rough floor.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is the role of friction in motion?

  • It promotes motion
  • It opposes motion
  • It has no effect

💡 Hint: Think about what happens when you push a book on a table.

Question 2

True or False: Friction increases with smoother surfaces.

  • True
  • False

💡 Hint: Recap your experiences with different floor surfaces.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

If the coefficient of friction between two surfaces is known, how would you calculate the frictional force? Provide a formula and an example.

💡 Hint: Recap your physics formulas related to forces.

Question 2

Explain how using lubricants affects friction in machines and provide examples.

💡 Hint: Think about how oil can make it easier for parts to move against each other.

Challenge and get performance evaluation