Why do fish have scales?

Many fishes have scales but clingfishes do not have. Their body has a layer which is called mucous. Scales on the fish body helps fish in some ways like:- Firstly it acts as a protective layer so that harmful objects, fungus, bacteria and parasites cannot […]

What are sun spots?

Sun spots are the parts on the solar surface which has temperature nearly 4500 K. this temperature is 1500 K less than the temperature of the surrounding photosphere. So these regions are somewhat cool then the other parts. These sun spots are 150 kilometers away […]

Who invented Fencing?

Fencing is a combat sport in which two participants test their skills in a duel using weapons made of blades as thin as foils which look like long thin swords. Cordouan Gonzalo in 1510 is believed to have invented the art of fencing as we […]

Why do people drink alcohol?

After researches many answers have come up for this question but the main answer for this question is socialization. People start taking alcohol just to get fit in the society. They took alcohol drinking as the status symbol and they also relaxed from the stress […]

How to lose weight without dieting?

Today everybody wants to look fit and smart. So for this they have to get rid off the extra fat in their bodies. Only dieting is not sufficient to reduce weight because when you eat less food your body naturally slows down the metabolic activities. […]

How does an atomic bomb work?

Every Matter contains vast amounts of energy. To understand it better, we must keep in mind Einstein’s famous E=mc^2 equation, where E means Energy, M means Mass, and C means speed of light. It means that when the speed of light squared is multiplied by […]

What are airplanes made of?

Mostly all the airplanes are made up of the light and strong metal because the plane has to fly in the air and it is always tried that the weight of the plane’s body should be minimum. Its frame is mostly made up of aluminum […]

Why an egg floats in salty water?

You have always noticed that an egg sinks in the fresh water or plain water while it starts floating in the salt water this because when you add salt to the water you are adding more molecules to the water. Earlier the molecules were apart […]

How do we get afflicted from roundworms?

Roundworms are also known as nematodes and can affect both adults and children. These worms will usually live in the human intestines after they have come in contact with humans. Even pets can get affected by roundworms and even pass the same to the humans. […]

How do volcano erupt?

Volcanoes are formed when there is a great stress inside the earth’s crust and the pressure of magma reaches so high that it finds its way upward causing an eruption. Sometimes the magma chamber breaks its sides and only reaches to the flank or summit […]