Class 8 Science Chapter 11 Question Paper

Class 8 Science Chapter 11 Question Paper

 

Q-1 Multiple choice questions [1 Mark each]

 

The strength of force is expressed by

• Weight
• Mass
• Magnitude
• Direction

 

The force between two charged bodies is called

• Muscular force
• Gravitational force
• Magnetic force
• Electrostatic force

 

Force is a

• Pull
• Push
• Pull and push both
• None of these

 

Q-2 Fill in the blanks [ 1 mark each]

1. To draw water from a well we have to …………. the rope.
2. To move a loaded trolley, we have to ……………it.
3. The like poles of a magnet …………. Each other.
4. Force of friction is an example of ……………. Force.

 

Q-3 Answer the following:

1. What are the two state of motion?
2. Write example of non-contact forces.
3. Define pressure
4. Give two examples of muscular force.
5. What is the resultant force when two forces of 10N and 5N acting in same direction?
6. Write any two effect of force.
7. When does the force become zero?

 

Q-4 Answer the following [ 2 marks each]

1. What is a force? Explain with some examples.
2. What is electrostatic force? Why it is called non-contact force?
3. Differentiate between contact and non-contact forces.
4. What is muscular force? Why is it called contact force?

 

Q-5 Write the formula of pressure with unit. What happens to the pressure when area on which it is applied increases?