Practice Activity 9.3 - 9.2.3 | 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 force opposes the motion between surfaces?

💡 Hint: Think about the force that stops a moving object.

Question 2

Easy

What happens when a pencil cell rolls on a rough surface compared to a smooth surface?

💡 Hint: Consider which surface would provide more resistance.

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 friction?

  • A force that helps motion
  • A force opposing relative motion
  • A type of energy

💡 Hint: Think about what happens when you try to slide something across a table.

Question 2

True or False: Friction can exist between two smooth surfaces.

  • True
  • False

💡 Hint: Consider the surfaces closely; are they ever absolutely smooth?

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

If you double the weight of an object sliding on a surface while keeping a constant surface roughness, how does this affect the friction force? Provide calculations.

💡 Hint: Remember the relationship between weight and normal force.

Question 2

Design a model to compare rolling friction and sliding friction using common classroom objects. Explain your findings.

💡 Hint: Reflect on the differences in surface contact.

Challenge and get performance evaluation