Some important one-liner of Science with explanation.

Some important one-liner of Science with explanation.

The mass of a body at the center of the Earth is zero why?Due to gravitational force zero at the center.
The handles of bags or suitcases are made broad having more area why?Due to small pressure acting on it
A fountain pen comes out why?Due to low atmospheric pressure
It is difficult to cook food at a higher altitude why?Due to low pressure
Causing bleeding from the nose at heights why?Due to low pressure
The strain has no units why?Due to it is the ratio of same things
Quartz and Phosphor bronze regain their original configuration completely after the withdrawal of applied force why?Due to their perfectly elastic body
Siver is used for interconnection of the cell in a solar panel why?Due to(silver) best conductor of heat and electricity
A fan starts when the switch is on why?Due to conversion of electric energy to mechanical energy
When two stones struck, a spark appears why?Due to conversation of work done into heat
The work done by a body is maximum when force and displacement are in the same direction why?Due to making angle zero between them and Minimum at 90°
A rocket is moves upward with velocity 12km/sec, the Scientists are unable to get it back to the Earth why?Due to escape velocity of anything on the Earth’s surface is 11.2km/s which is higher than it’s limit
A geostationary satellite appears to be at a fixed position to an observer on the Earth why?Due to same revolution of both
When a motorcycle moves in the globe in a circus, it is not fall in the globe why?Due to centripetal force
We used lubricants and ball bearing in the wheels of the vehicles why?Due to avoid friction
The weight is felt by a man in a lift is higher that of his original weight when the lift accelerating upwards why?Due to gravitational force of the earth and vice versa
When a fielder catch a ball in the cricket ground he back his hand why?Due to impulsive force of the ball otherwise the fingurs or palm get injured
A bullet Pierce (hole) in a Target but not a stone why?Due to it’s higher velocity
A great force is required to stop a heavy body than a light body why?Due to higher mass and higher momentum
When a gun is fired it push the gun-man back why?Due to recoiling of gun,Newton’s 3rd law of Motion
A high jump athletic event,the athletes made to fall either on a caustioned bed or on a sand bed why?Due to momentum of his/her body.
A person standing in a bus falls backward when bus starts moving suddenly why?Due to inertia of rest
If a block of wooden is pulled from both sides with equal forces , the block will not move why?Due to net foce acting on the body is zero ie called balanced force
A man with a load of 10kg in his head walking around a circular park and covered a distance of 1000 metres and finally stop at his staring point then the total work done by man is zero why ?Due to displacement covered by him is zero
If a body falls freely vertically downward then the value of g is taken as positive why?Due to increase of velocity of the body. & Vice Versa
.A boat floats in water but not a small piece of iron why?Due to buoyancy
Ice floats in a liquid why?Due to the weight of water displaced is equal to the weight of the ice.
The gas balloon rises in air why?Due to buoyancy
Small drops of rain are spherical why?Due to surface tension

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