Water can take all three states of matter—solid liquid and gas. All such states are possible because the moving speed of molecules changes. Sometimes a question arises in mind why on adding salt ice starts melting. Actually, when salt is added, water molecules start running fast. So ice starts melting. In simple words, by adding […]

Earlier, Pluto was also regarded as one of the nine planets of the solar system but on 24 August, 2006, it was removed from the list of planets by IAU (International Astronomical Union) because Pluto failed in fulfilling all criteria set for being a planet. As per Resolution 5A a planet must orbit the sun,

There are multiple factors due to which pimples come up on the face. They are categorized as genetic factors, hormonal and environmental factors. As a genetic reason for pimples, it is very clear that due to genes it is family inheritance. Suppose father has pimples on his face then children can have them on their

It is a well-known strange fact that owls can see well in a dark night too. Actually, in an owl’s eyes, there are two types of cells, called ‘rod cells’ and ‘cone cells’. Cone cells help perceive colours and rod cells give the visibility factor. Rod cells in an owl’s eyes are 10 times more

The ocean contains salty water and behind such saltiness there are a few reasons. Firstly, rain when falls on earth contains the dissolved form of carbon-dioxide which causes rainwater to be acidic in nature and also contains carbonic acid.  The rain when erodes the rock, the acid present in it, breaks down rocks chemically and

Any object floats or drowns in water because of its density. Actually at the depth of any liquid, there is an upward force because of the effect of gravity on fluid. If an object falls on it, having less density than the density of fluid, it will float. If the object has higher density than

Sleeping is a process of recurring once state of mind and tiredness that keep the human body active. Logically, time is set such that it is worked according to the cincadian clock and also people prefer sleeping as night is taken for granted to be the time for sleeping. Night is meant for sleeping because

Mosquitoes are famous for distributing diseases like malaria, etc to human beings but you will be really surprised to know that mosquitoes cannot spread AIDS virus (HIV). Actually, AIDS is spread by unsafe sexual relationships, by injecting HIV affected blood to the body or by injecting infected injections. No doubt, mosquitoes also suck our blood

Firstly, the moon is not a light source. So it cannot produce its own light. It shines just because of the sun. Actually, at daytime the sun heats the moon and some amount of light is radiated by the moon in daytime. But such radiation is of very low intensity in comparison to light radiated

Menstruation is a common process of 28 days of discharge of blood, tissue from the uterus cells of a woman’s body. Peculiar methods occur periodically in a woman’s life and, hence, she needs it because it is a life-long process only interrupted by the pregnancy of a woman. It is needed because it is a

It is generally known by laymen that a lemon is acidic in nature but you might feel confused if you come to know that lemons have citric acid in them but water with a lemon has alkalizing effect on the body. Lemons have high pH value which may vary between 2.2 to 2.4 depending upon

Snow falls from the sky, but where exactly does it come from? Snow begins in the atmosphere as water condenses into a tiny droplet. As more and more water vapour condenses onto its surface, the droplet grows. Cold air then freezes this water into an ice crystal. Each ice crystal has a unique shape that

The sky appears as blue only when the sunlight enters the atmosphere. The sunlight is made up of a spectrum of colours, known as VIBGYOR or rainbow colours. As soon as the light enters the atmosphere, the colours all scatter as they pass from different particles in the air. The colour in the light with