Category Archives: Interesting Facts

Lion Facts Lion Facts


Lions (along with tigers) are the biggest members of the cat family, weighing up to 230 kg. Male lions may be 3 m long. Lions used to live through much of Europe and Asia. Now they are restricted to East and Southern Africa. Around 200 lions also live in the Gir forest in India. Lions…
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Coast Facts Coast Facts


Coastlines are changing all the time as new waves roll in and out and tides rise and fall every six hours or so. Over longer periods coastlines are reshaped by the action of waves and the corrosion of salty water. On exposed coasts where waves strike the high rocks, they undercut the slope to create…
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Iceberg Facts Iceberg Facts


Icebergs are big lumps of floating ice that calve, or break off, from the end of glaciers or polar ice caps. This often occurs when tides and waves move the ice up and down. Calving of icebergs occurs mostly during the summer when the warm conditions partially melt the ice. Around 15,000 icebergs a year…
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Facts About Antibodies Facts About Antibodies


Antibodies are tiny proteins that make germs vulnerable to attack by white blood cells called phagocytes. Antibodies are produced by white blood cells derived from B lymphocyctes (see lymphocytes). There are thousands of different kinds of B-cell in the blood, each of which produces antibodies against a particular germ. Normally, only a few B-cells carry…
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Facts About Stars Facts About Stars


Stars are balls of mainly hydrogen and helium gas. Nuclear reactions in the heart of stars generate heat and light. The heart of a star reaches 16 million°C. A grain of sand this hot would kill someone 150 km away. The gas in stars is in a special hot state called plasma, which is made…
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Motion Facts Motion Facts


Every movement in the Universe is governed by physical laws devised by people such as Newton and Einstein. Newton’s first law of motion says an object accelerates, slows down or changes direction only when a force is applied. Newton’s second law of motion says that the acceleration depends on how heavy the object is, and…
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Cereal Facts Cereal Facts


Fertilizers are natural or artificial substances added to soil to make crops and garden plants grow better. Natural fertilizers such as manure and compost have been used since the earliest days of farming. Manure comes mostly from farm animals, though in some countries human waste is used. Manure contains the chemicals nitrogen, phosphorus and potassium…
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Moss Facts Moss Facts


Mosses are tiny, green, non-flowering plants found throughout the world. They form cushions just a few millimeters thick on walls, rocks and logs. Unlike other plants they have no true roots. Instead, they take in moisture from the air through their stems and tiny, root-like threads called rhizoids. Mosses reproduce from minute spores in two…
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Garden Facts Garden Facts


The ancient Chinese and Greeks grew fruit trees, vegetables and herbs in gardens for food and for medicines. In the 1500s there were five famous botanical gardens in Europe designed to study and grow herbs for medicine. The first botanical gardens were at Pisa (1543) and Padua (1545) in Italy. Kew Gardens was once owned…
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Solution Facts Solution Facts


A cup of tea is made up of the solvent, water, and a number of solutes: the tea, milk and perhaps sugar. A highly saturated solution produces strong, sweet tea. A poorly saturated solution produces weak tea. Tap water is rarely pure water; it usually contains invisible traces of other substances. This makes it a…
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Tundra Facts Tundra Facts


Tundras are regions so cold and with so little rain that tall trees cannot grow. Tundras are typically covered in snow for at least half the year. Even in summer the soil 1 m or so below the ground may be permanently frozen. The frozen ground stops water draining away and makes tundras marshy and…
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Dog Facts Dog Facts


The dog family is a large group of four-legged, long-nosed, meat-eating animals. It includes dogs, wolves, foxes, jackals and coyotes. All kinds of dog have long canine teeth for piercing and tearing their prey. (Canine means `dog’). When they are hunting, dogs rely mainly on their good sense of smell and their acute hearing. Wolves…
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Facts About the Nervous System Facts About the Nervous System


The nervous system is your body’s control and communication system, made up of nerves and the brain. Nerves are your body’s hot-lines, carrying instant messages from the brain to every organ and muscle – and sending back an endless stream of data to the brain about what is going on both inside and outside your…
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Lung Facts Lung Facts


Your lungs are a pair of soft, spongy bags inside your chest. When you breathe in, air rushes in through your nose or mouth, down your windpipe and into the millions of branching airways in your lungs. The two biggest airways are called bronchi (singular bronchus), and they both branch into smaller airways called bronchioles….
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Mussel Facts Mussel Facts


Cockles and mussels belong to a group of molluscs called bivalves, which includes oysters, clams, scallops and razor shells. Bivalve means having two valves and all these creatures have two halves to their shells, joined by a hinge that opens rather like that of a locket. Most bivalves feed by filtering food from the water…
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Sugar Facts Sugar Facts


Sugars are sweet-tasting natural substances made by plants and animals. All green plants make sugar. Fruit and honey contain a sugar called fructose. Milk contains the sugar flamed lactose. The most common sugar is called sucrose or just sugar — like the sugar you sprinkle on cereal. Sugar cane was first grown by South Pacific…
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Touch Facts Touch Facts


Touch, or physical contact, is one of five sensations that are spread all over your body in your skin. The others are pressure, pain, heat and cold. There are sense receptors everywhere in your skin, but places like your face have more than your back. There are 200,000 hot and cold receptors in your skin,…
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Extraterrestrial Facts Extraterrestrial Facts


Extraterrestrial (ET) means ‘outside the Earth’. Some scientists say that ET life could develop anywhere in the Universe where there is a flow of energy. One extreme idea is that space clouds could become sentient (thinking) beings. Most scientists believe that if there is ET life anywhere in the Universe, it must be based on…
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Flower Facts Flower Facts


Flowers have both male parts, called stamens, and female parts, called carpels. Seeds for new plants are made when pollen from the stamens meets the flower’s eggs inside the carpels. The carpel contains the ovaries, where the flower’s eggs are made. It is typically a short thick stalk in the centre of the flower. A…
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Fold Facts Fold Facts


Rocks usually form in flat layers called strata. Tectonic plates can collide (see converging plates) with such force that they crumple up these strata. Sometimes the folds are just tiny wrinkles a few centimeters long. Sometimes they are gigantic, with hundreds of kilometers between crests (the highest points on a fold). The shape of a…
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