CLASS 8 Chapter 11 Force and Pressure

Short answer type questions

Question 1. Group the following action as a push or pull.

1. Moving a book placed on a table.
2. A cricket ball was hit by a batsman.
3. Opening a door.
4. Moving a loaded cart.

Question 2. What do you understand by force?

Question 3. Define the term magnitude.

Question 4. What happens when you exert an equal amount of force from different directions?

Question 5. Explain the state of motion of an object.

Question 6. What types of changes in an object may occur due to the applied force?

Question 7. What is muscular force?

Question 8. List some examples of force applied by the muscles in our body.

Question 9. What is a contact force? Give some examples.

Question 10. Name the two types of contact forces. Give two examples of each.

Question 11.  What are non-contact forces?

Question 12. Define the term pressure.

Long answer type questions

Question 1. Explain the following.

1. Muscular force
2. Friction force

Question 2. What is a magnetic force? Explain push and pull force.

Question 3. Explain the gravitational force with an example.

Question 4. What is an electrostatic force? Is it a contact force or a non-contact force?

Question 5. What is atmospheric pressure? How it is related to the force of gravity?