Helium balloons float in water because of the force called buoyancy, which is the upward force exerted by water that resists the weight immersed in the liquid. A balloon with helium gas is lighter than a balloon filled with air because a litre of air weighs 1.25 grams but a litre of helium gas weighs […]
Flowers are liked by all because of their beautiful eye-catching colours. Such colours in flowers are the result of reflected light from the pigments, called anthocvanins in the plant, which are based upon in the hereditary genome of the plant. Apart from such pigments, there are also other reasons which give flowers different colours. Such
Children lose their milk teeth as they grow up because their gums and jaw size increase with age. The loosening of primary teeth occurs at the age of 6 to 7 years and because the jaw or jaw muscles cannot take in permanent teeth, the root of the milk teeth is reabsorbed. The first teeth
A bird’s beak, which is also at times called as the bill, is more like a jaw of the bird. It helps the bird to chew food. While animals have heavy jawbones and teeth birds have light beaks so that they may fly easily. The beak of the bird also helps it to tear things
There are many studies done on cancer and now curable steps are invented for cancer but still cancer is found out to be dangerous because it is not that easy to find out the symptoms of cancer at an early stage. In early stages, only if cancer is detected then doctors can be able to
The type of reproduction in plants is usually occurred with the help of the pollination process which mainly occurs in flowers. Pollination is a technique in which the pollen is transferred from the male to the female part of flowers. One flower can only have a male part or a female part and thus the
A bubble is a thin film of soapy water. Most of the bubbles that you see are filled with air, but you can make a bubble using other gases, such as carbon dioxide. The film that makes the bubble has three layers. A thin layer of water is sandwiched between two layers of soap molecules.
Whenever we push anything upward, it again falls back to earth; all is due to the gravitational force of the earth. Gravitational attraction is actually the attraction between two objects. This force is directly proportional to the product of their masses and is inversely proportional to distance between their distances. Gravitational force of the earth
One of Earth’s original recyclers, earthworms are our planet’s greatest composters. They help keep the soil fertile so plants can grow. When they burrow into the ground and turn up soil, they expose it to oxygen. As they dig deep, they eat decomposing organic matter, like leaves and roots, and extract the nutrients from them.
Long ago, there were no cattle in the Maasai tribe. One day, God called Maasinta, the first Maasai and asked him to make a large enclosed area and then inform him. Maasinta went and made an enclosed area as instructed, and then went back to inform God. Next, God asked him to stand against the
A turtle has a shell because it provides it with protection. Almost certainly the original and most widespread role of the turtle shell is protection from predators, something that’s especially useful given the slow, careful foraging styles of most turtles. Different types of turtles have different types of shells which all provide benefits in their
Crocodiles, the largest of living reptiles, are found throughout the tropical and subtropical regions of the world. Crocodiles are found on all the continents of the world, except for Europe and Antarctica. The geographical range of this reptile species spans across North America, South America, Asia, Africa and Australia. Their natural habitat includes freshwater sources
Long ago, there lived a frog who had two wives. One lived in Dumbi and the second wife lived in Dala. One day, a little frog came to him and said, “Come to Dumbi, please! Your first wife has prepared a yummy pudding for you.” The frog was delighted because he liked puddings very much.
Once, Abu Nawas and his wife were arguing and Abu Nawas said to his wife that she was stupid. She met her friends and said, “I want to buy cleverness.” Abu Nawas overheard their conversation. Abu Nawas decided to play a trick. He went out in the street and started playing with a ball in
Once upon a time, there was a King whose ears were floppy like those of a donkey. He did not want his secret to be revealed; so whenever he went out in public, he covered his ears from the people. The only person who ever saw the King’s ears was his hairdresser. The King always