Worksheet on Types of Forces - Class 4 Notes & Olympiad Questions

Solved Questions on Types of Forces

1. Which force is responsible for the attraction or repulsion between magnets and iron objects?

a) Muscular force
b) Magnetic force
c) Gravitational force
d) Frictional force

Answer: b) Magnetic force is the force of attraction or repulsion exerted by magnets on magnetic objects such as iron.

2. A student rolls a ball on different surfaces and measures the distance it travels. Which surface is expected to make the ball roll the furthest?

a) Smooth surface
b) Rough surface
c) Soft surface
d) Slippery surface

Answer: a) A smooth surface offers less friction, allowing the ball to roll more freely with less resistance and covering a greater distance.

3. Match the following.

a) 1:D, 2:A, 3:C, 4:B
b) 1:C, 2:A, 3:B, 4:D
c) 1:C, 2:A, 3:D, 4:B
d) 1:B, 2:A, 3:D, 4:C

Answer: c) Gravitational Force: The force that pulls objects towards the Earth.
Frictional Force: The force that opposes the motion of objects and acts in the opposite direction.
Muscular Force: The force applied by muscles to perform physical activities.
Magnetic Force: The force of attraction or repulsion exerted by magnets on magnetic objects.

4. Which of the following activities demonstrates the application of muscular force?

a)
b)
c)
d)

Answer: a) Riding a bike requires the use of muscular force. When you ride a bike, you use the muscles in your legs to pedal and generate the force needed to move the bike forward.

5. How can you reduce the frictional force between two surfaces?

a) Increasing the force applied
b) Using rough surfaces
c) Keeping the surfaces clean
d) Adding oil or grease

Answer: d) Adding oil or grease to the surfaces can help reduce friction by creating a lubricating layer, allowing the surfaces to slide more easily against each other.

FAQs on Types of Forces

1. What is a Force?

A push or a pull that causes anything to move or stop is called a force.

2. What are some examples of forces?

Here are some examples of force:

1. When you kick a ball.
2. When you close a door.
3. When you pick up your backpack.

3. What is Gravity?

What maintains us on the earth is gravity. Everything is pulled towards Earth by it. Things fall when you drop them because of gravity.

4. How does friction affect movement?

A stopping force is similar to friction. It makes objects difficult to glide or move smoothly. This explains why riding a bike over mud causes you to slow down.

5. What are some examples of Push and Pull?

Push Examples:

1. Closing a Door: When you push the door, you're using a push force to close it.
2. Pushing a Swing: Pushing a swing makes it move away from you.

Pull Examples:

1. Opening a Drawer: When you pull a drawer, you're using a pull force to open it.
2. Pulling a Suitcase: When you're at the airport, you pull your suitcase behind you.