Practice Keywords - 9.7 | 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 is friction?

💡 Hint: Think about what happens when you slide something on a table.

Question 2

Easy

What type of friction occurs when an object is at rest?

💡 Hint: Consider what happens before you start moving a heavy box.

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 type of friction acts on a stationary object?

  • Rolling Friction
  • Static Friction
  • Sliding Friction

💡 Hint: Think about what happens before something starts to move.

Question 2

True or False: Rolling friction is generally greater than sliding friction.

  • True
  • False

💡 Hint: Think about how easy it is to roll versus slide an object.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

A train moves forward with a static friction force of 100 N and sliding friction takes over as it speeds up to 80 N. Calculate how friction changed as it transitioned.

💡 Hint: Think about the transition from still to movement.

Question 2

Design an experiment to demonstrate the effect of lubricants on friction, including variables and expected outcomes.

💡 Hint: Consider different types of lubricants and surfaces.

Challenge and get performance evaluation