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 container. … [Read more...] about Pressure Exerted by Liquids
Class 8
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 sewing 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 … [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 … [Read more...] about Contact force