In reality, only we on the earth observe stars twinkling and shining. The perception of stars twinkling is mainly because the earth has a lot of layers in the surrounding atmosphere with distinct air density and temperature. Due to this, the light that is reflected on the surface of the earth (from where we observe) […]
Sometimes you may have noticed irregular bare spots in your gardens and odd crop growth. At that time, you might have thought that you have taken care of everything even then why it is so. Actually, it is so because of salty soils which are caused by poor drainage, deicing salts, excessive use of fertilizers
Hair is primarily made up of protein, called keratin and grows from a follicle, which is a sac. Proteins have sulphur atoms and when two sulphur atoms combine they form a disulphide bond. The texture of our hair mainly depends on the disulphide bond. The greater the number of these bonds, the curlier our hair
Burping or belching is a way out for gases that have caused indigestion in the stomach. The release of gas is via the oesophagus from the stomach, which comes out of the mouth. This regurgitation is because the air we take in while we eat and drink that causes tension in the stomach and that
Human body-parts do not fall asleep as the prescribed notion but they tend to lose the sensation of touch or pressure due to the compression of the nerves, which takes the stimulus from the body to the brain. Mostly, it is because of the position of our limb that defines the sleepiness of our body-part.
Leaves change colours when the season changes. In the fall or winter, the leave pigment responsible for the green colour, chlorophyll is not produced in leaves. Here, the secondary pigments act and give their colours to leaves. These include carotene, which gives bright orange colour to carrots. Anthrocyanin in red and wine-coloured leaves gives colour
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.