Glass is a thing through which we can see. It is made by melting certain materials together and cooling them down afterwards. Commonly used ingredients to make glass are sand (silica), soda, limestone, borax, magnesium oxide, boric acid and lead oxide. Natural glass is made when hot lava containing silica gets cooled rapidly. This glass […]
• Common name : Chervil • Scientific name : Anthriscuscerefolium • Family : Apiaceae or Umbelliferae • Native land : South-Eastern Europe, Britain It is an upright annual with aniseed-flavoured, 2- to 3-pinnate leaves with ovate leaflets, and umbels of small white flowers in summer. They grow up to 0.1-0.5 metre. The finely-cut, bright green
• Common name : Swiss Chard • Scientific name : Beta vulgaris (Cicla Group) • Family : Amaranthaceae • Native land : Europe, North Africa and Western Asia Swiss chard is an annual leafy garden vegetable that is closely related to beets. It is largely distinguished from the beets by its lack of enlarged fleshy
• Common name : Chamomile • Scientific name : Matricariachamomilla • Family : Asteraceae • Native land : Europe, including Britain, East to west and Asia and the Himalayas The root is perennial, jointed and fibrous. The stems, hairy and freely branching, are covered with leaves that are divided into thread-like segments. It blooms from
Gum is something which we can chew on. It is mostly of plant origin. Gums are used in foods, in pharmaceuticals and in cosmetics. It has adhesive properties. Gums are extracted by making an incision in tree bark and collecting the liquid throughout the season. ‘Gum Arabic’ comes out as a thick sticky liquid from
‘Skyscraper’ is a term used for describing very tall building. The Bible mentions a tall building, ‘the Tower of Babel’. People of northern Europe started building huge cathedrals of great height, in the Middle Ages, which remained the tallest buildings for many years. Great architects designed tall buildings to which tall spires were added to
• Common name : Red Valerian, Jupiter’s Beard, Keys of Heaven, Fox’s Bush • Scientific name : Centranthusruber • Family : Valerianaceae • Native land : South of England The rootstock is perennial and very freely branching, enabling it to take a firm hold in the crevices in which it has once gained possession. The
• Common name : Romanesco Broccoli, Cauliflower • Scientific name : Brassica oleracea(Botrytis Group) • Family : Brassicaceae • Native land : Western Europe A cauliflower is an annual vegetable that is reproduced by seeds. It is a cool weather vegetable. The edible portion of a cauliflower is a curd‑like mass composed of a close
Green Revolution was a movement that began in the 1960’s to boost the food supply of the world using high-yielding seeds, hybrid cereals and modern agricultural techniques along with better management. It was highly successful in India and Mexico. The need for such a movement rose due to worldwide occurrences of famine and drought. The
• Common name : Cupid’s Dart • Scientific name : Catananchecaerulea • Family : Asteraceae • Native land : Mediterranean region It is a short-lived perennial. The bright blue, cornflower-like blooms of catananche appear continuously from early to late summer and are at their peak in midsummer. They grow in full sun. The plant is
• Common name : Castor Oil Plant • Scientific name : Ricinuscommunis • Family : Euphorbiaceae • Native land : Tropics (Africa) Castor bean is a herbaceous annual which can grow up to nearly 15 feet tall when grown in open spaces and warm climates. The leaves are glossy and often red or bronze tinted
Humans have existed on the Earth for hundreds of years now and have always made and worked with tools. But it was only in the last 200 years that a major change took place in the way man lived or worked. This was due to the invention of the ‘machine’. This significant period has been
• Common name : Carrot • Scientific name : Daucuscarota • Family : Apiaceae • Native land : Europe and South-Western Asia The carrot is a herbaceous variable biennial plant. It grows up to 2 feet tall. It has delicate white flower heads. It has a thin, wiry taproot that is fleshy, bright orange root
Geometry is the study of the shape, size and position of objects in space. The word ‘geometry’ is a Greek word, meaning ‘earth’ and ‘measure’. The ancient Egyptians used geometry to construct pyramids and measure pieces of their lands washed away by River Nile during flood. Geometry is divided into two major sections: plane and
The metric system is a way of measuring things. In the past, there existed many variations in the weights and measurements used all over the world; hence the need for an international system of measurement arose. The metric system is based on the measure of length called the metre. It was worked out in France