Fill in the blanks
1. We can move object either by push or by pull.
2. This push or pull is called force.
3. We need more force to move a heavy object.
4. Object that are light need less force to move a object.
5. We use force to change the direction of a moving object.
6. Force is used to stop the motion of a moving object .
7. We cannot see force, but we can see and feel its effect on things.
8. Air and water can make things move because they can exert force.
1.Name some everyday activities which require force.
Ans. Bathing, wearing clothes, walking, dancing etc.
2. Differentiate between a ‘push’ and a ‘pull’.
Ans .When we are applying force to move the object far from me then that force is known as push .
When we are applying force to bring the object near me then that force is called pull.
3. Effects of force./ what happens when force is applied to an object.
1. Force can increase the speed of an object,
2. Can change directions of the object.
3. Can slow down or stop the motion.
4. It also changes the shape of an object.
4. Give examples to explain---------
a). How force leads to change in direction?
Ans. In cricket match when a bat hits a ball.
b). How force can stop an object completely ?
Ans. When brakes are applied in a moving bicycle.
c). How force can change the shape of an object.
Ans. When we make a chapatti we can turn the small round of dough into a big chapatti by applying force.
d). How ‘turning of things’ also require force.
Ans. When we turn the water-bottle caps and sip some water.
5. Why any object floating on water moves a little on its own?
Ans. Object floating on water moves a little on its own because water possesses force.
6. Explain water has force?
Ans. A boat floats on the water because water gives a vertical force to the boat.
7. How do kites fly in the air?
Ans. Kites fly in the air because air has force .
8. How do you know that I applied force while writing?
Ans. We know that you have applied force because we could see the effect.