Pressure in Physics
Quiz covering concepts related to pressure including atmospheric pressure, pressure distribution, definition of pressure, and practical applications in everyday life
Questions
A teacher tells her class that there is an invisible layer of air above us, which is called atmosphere. On learning more about the atmosphere, a student asks a doubt, ‘Why do we not experience the tremendous pressure of the air layer above us on our bodies? ’ The correct answer given by the teacher was _____.
- air is light
- the pressure inside our bodies is equal to atmospheric pressure
- sunlight makes the air warm and then warm air rises up
- winds reduce the air pressure
- we are very strong
Some villagers were carrying heavy pots on their heads. Many of them complained that their heads ached badly due to the weight. A clever person among them suggested that they should remove their shirts, roll it and place it on their heads like a ring to carry the heavy pots. When this was done, the weight on their heads seemed easier to carry. What is the correct explanation for this?
- They got some rest while rolling their shirts.
- By doing this the weight of the pots decreased.
- The weight would be equally distributed along the ring of the rolled up cloth.
- Since, the position of pots were a bit elevated, the pressure was reduced.
- Wind speed decreased the pressure of the weight.
Force acting per unit area of a surface is called _________.
- magnetism
- friction
- gravity
- pressure
- None of these
Why do astronauts wear special space suits?
- These suits emit light so that they can see in the darkness.
- They look smarter in the space suit.
- It is a protocol that those who go out into space must wear this suit.
- Space suits maintain pressure equal to the body pressure.
- As it is difficult to wash ordinary clothes in outer space.
A boy was travelling with his father on a scooter. He noticed a huge truck with many big wheels. He compared the size of the wheel to that of his scooter. He then asked his father,'' why are the wheels of heavy vehicles broad and many in number. Which of the following is the correct answer of the question asked by the boy?
- They spread out the weight.
- Heavy vehicles look stylish in that way.
- This prevents wear and tear.
- Small wheels more in number will increase the speed.
- The vehicles look taller in that way.