Question 1 Why makes a balloon get inflated when air is filled in it? Question 2 Why a bicycle tube get inflated when air is filled in it? All the gases exert pressure on the walls of the container. 1)Air is a mixture of gases. 2)All the gases are made up of tiny particles called molecules which move around quickly in all directions. 3)The fast moving gas … [Read more...] about Pressure exerted by gases
Force and pressure
Applications of atmospheric pressure
Question 1What type of pressure is involved in the filling of a liquid in a syringe? Question 2 What is a rubber sucker? Question 3 How does a rubber sucker works? Question 4 State few uses of rubber sucker? Question 5 How does a syringe work? Question 6 What is a syringe? Question 7 How does a dropper work? Question 8 What is a dropper? 1)Drinking straw … [Read more...] about Applications of atmospheric pressure
Pressure exerted by liquids
Question 1 How does the pressure of a liquid depends on its depth.Explain? Question 2 What conclusion do you get from the observation that a fountain of water is created at the leaking joint of pipes of the main water supply line? Question 3 Liquids exert pressure on the wall of contain.Explain? Question 4 Liquid exert pressure on the bottom of the … [Read more...] about Pressure exerted by liquids
Atmospheric pressure
Question 1 Define the term atmosphere? Question 2 What is atmospheric pressure? Question 3 What is the SI unit of atmospheric pressure? Question 4 What substance present in our body to balances the atmospheric pressure acting on us? Question 5 Where will be the atmospheric pressure be greater-at ground level or at the top of high mountain? Question 6 Name the … [Read more...] about Atmospheric pressure
Pressure
Question 1 What is pressure? Question 2 Define the SI unit of pressure? Question 3 Why does a sharp knife cut objects more effectively than a blunt knife? Question 4 Why wooden sleepers are kept below the railway line? Question 5 Why a wide steel belt is provided over the wheels of an army tank? Question 6 Why the tip of a sweing needle is sharp? Question 7 … [Read more...] about Pressure
Non-contact forces
Question 1 What are non-contact forces.Give few examples? Question 2 When a plastic pen is rubbed in dry hair, it attracts tiny pieces of paper.Which force is involved in this process? Question 3 A small piece pulls iron nails from a distance.Which force is involved in this process? Question 4 An inflated balloon was pressed against a wall after it has been rubbed with … [Read more...] about Non-contact forces
Contact force
Question 1 What are contact forces? Question 2 Name 2 types of contact forces? Question 3 Name the force which always opposes motion? Question 4 Which force makes a rolling ball stop of its own? Question 5 What is muscular force.Give example? Question 6 What is frictional force.Give example? Question 7 Name the type of force involved when a moving boat coming … [Read more...] about Contact force
Effects of Force
Question 1 Give examples where force moves a stationary object? Question 2 Give examples where force stops a moving object? Question 3 Give examples where force can change the speed of moving object? Question 4 Give examples where force can change the direction of moving object? Question 5 Give examples where force can change the shape and size of an … [Read more...] about Effects of Force
Force has magnitude as well as direction
Question 1 Define the term Newton? Question 2 What is the unit of force? Question 3 What happen if the two forces applied to an object act in the same direction.Explain with example? Question 4 What happen if the two forces applied to an object act in the opposite direction.Explain with example? Question 5 What happen if the two forces applied to an object are equal … [Read more...] about Force has magnitude as well as direction