It takes more time to cook potatoes on mountain tops because atmospheric pressure is low. At higher altitudes, the reduced atmospheric pressure lowers the boiling point of water, causing water to boil at temperatures lower than at sea level. This ...
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The reason why snow covered on mountains does not melt simultaneously due to the heat of the Sun is because it reflects most of the heat received from the Sun. The reflective properties of snow prevent it from absorbing much ...
The hairs of the shaving brush stick together when taken out of water due to surface tension. Water molecules at the surface of the hairs attract each other, causing them to cling together. This phenomenon is a result of cohesive ...
When kerosene oil is added to stagnant water, mosquitoes reduce because it interferes with the breathing of the larvae. The thin layer of oil formed on the water’s surface blocks the larvae’s access to air, effectively suffocating them. This disrupts ...
The shape of a raindrop becomes spherical primarily due to surface tension. Surface tension causes water molecules at the surface to contract, pulling the raindrop into the shape with the least surface area, which is a sphere. This phenomenon occurs ...
The principle of purification by soap relies on surface tension. Soap molecules disrupt surface tension, allowing them to surround and lift away dirt and oil from surfaces. This process enables effective cleaning by ensuring that contaminants are dispersed and washed ...
Oil spreads on the surface of water because the surface tension of oil is less than that of water. This causes oil molecules to spread out more easily, forming a thin layer on the water’s surface. This phenomenon occurs due ...
The great scientist Archimedes belonged to Greece. He was born in Syracuse, a Greek colony in Sicily, around 287 BC. Archimedes made significant contributions to mathematics, physics, engineering, and astronomy, and is considered one of the greatest mathematicians of all ...
Any boat will sink if it displaces water equal to its weight. According to Archimedes’ principle, the buoyant force acting on an object immersed in a fluid is equal to the weight of the fluid displaced by the object. Therefore, ...
The reason for a piece of iron not floating on the surface of water is that the weight of water displaced by iron is less than the weight of iron. According to Archimedes’ principle, for an object to float, the ...