Category Archives: Interesting Facts

Oil Facts Oil Facts


Oils are liquids that do not dissolve in water and burn easily. Oils are usually made from long chains of carbon and hydrogen atoms. There are three main kinds of oil: essential, fixed and mineral oils. Essential oils are thin, perfumed oils from plants. They are used in flavoring and aromatherapy. Fixed oils are made…
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Hedgehog Facts Hedgehog Facts


The Eurasian hedgehog has between 5000 and 7000 spines on its back and sides, each erected by its own muscle, creating a defense difficult for predators to penetrate. When a hedgehog rolls into a ball at the approach of danger, a special muscle draws its loose skin together (like a drawstring on a bag) over…
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Tissue Facts Tissue Facts


Tissue is a body substance made from many of the same type of cell. Muscle cells make muscle tissue, nerve cells form nerve tissue, and so on. As well as cells, some tissues include other materials. Connective tissues are made from particular cells (such as fibroblasts), plus two other materials – long fibers of protein…
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Hydrofoil Facts Hydrofoil Facts


Hydrofoils are boats with hulls that lift up above the water when traveling at high speeds. The hydrofoils are wings attached to the hull by struts that move underwater like airplane wings and lift the boat up. Because only the foils dip in the water, hydrofoils avoid water resistance, so can travel faster with less…
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Thyroid Gland Facts Thyroid Gland Facts


The thyroid is a small gland about the size of two joined cherries. It is situated at the front of your neck, just below the larynx. The thyroid secretes (releases) three important hormones – tri-iodothyronine (T3), thyroxine (T4) and calcitonin. The thyroid hormones affect how energetic you are by controlling your metabolic rate. Your metabolic…
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Halogen Facts Halogen Facts


Halogens are the chemical elements fluorine, chlorine, bromine, iodine. Halogen lights floodlight a stadium at night, allowing large audiences to watch. Halogens are and astatine. non-metals and make up part of the seventh main Group in the Periodic Table. The word ‘halogen’ means salt-forming. All halogens easily form salt compounds. Many of the salts in…
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Lemur Facts Lemur Facts


Lemurs are small furry creatures with long tails and big eyes. They are primates, like monkeys and humans. Lemurs live only on the islands of Madagascar and Comoros, off the east coast of Africa. Most lemurs are active at night and live in trees, but the ring-tailed lemur lives mostly on the ground and is…
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Central Nervous System Facts Central Nervous System Facts


The central nervous system (CNS) is made up of the brain and the spinal cord (the nerves of the spine). The CNS contains billions of densely packed interneurons – nerve cells with very short connecting axons. The spinal cord, together with the brain and nerves, form the body’s central information system, making sure all its…
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Zebra Facts Zebra Facts


A zebra’s stripes are as individual as human fingerprints – no two zebras are exactly the same. The quagga was a South African zebra that only had stripes on the front part of its body. The home range of Grevy’s zebra, which roams desert and savannah terrains in northeastern Kenya, sometimes exceeds 10,000 sq km….
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Facts About Australia Facts About Australia


The Aborigines make up 1.8 percent of Australia’s population today, but they were the first inhabitants. The word aborigine comes from the Latin aborigine, which means ‘from the start’. Aborigine cave paintings and tools have been found in Australia dating back to at least 45,000 years ago. Aborigines prefer to be called Kooris. British people…
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Black Hole Facts Black Hole Facts


Black holes are places where gravity is so strong that it sucks everything in, including light. If you fell into a black hole you’d stretch like spaghetti. Black holes form when a star or galaxy gets so dense that it collapses under the pull of its own gravity. Black holes may exist at the heart…
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Mammal Facts Mammal Facts


Humans feel close to mammals because they, too, are mammals, with hairy bodies, a large brain and special mammary glands for feeding milk to their young. There are about 4500 species of mammals in the world (and at least 1 million insect species). All mammals except the duckbilled platypus and spiny anteater give birth to…
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Mantle Facts Mantle Facts


The mantle makes up the bulk of the Earth’s interior. It reaches from about 10-90 km to 2890 km down. As you move through the mantle temperatures climb steadily, until they reach 3000°C. Mantle rock is so warm that it churns slowly round like very, very thick treacle boiling on a stove. This movement is…
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Lichen Facts Lichen Facts


Lichens are a remarkable partnership between algae and fungi. The algae in lichen are tiny green balls which make the food from sunlight to feed the fungi. The fungi make a protective layer around the algae and hold water. There are 20,000 species of lichen. Some grow on soil, but most grow on rocks or…
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International Organization Facts International Organization Facts


International organizations are of three main types: those set up by governments, like the UN; multinationals; and human rights and welfare organizations like the Red Cross and Amnesty International. The United Nations or UN was formed after World War II to maintain world peace and security. It now has over 190 member nations. UN headquarters…
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Helicopter Facts Helicopter Facts


Toy helicopters have been around for centuries, and those made by air pioneer Sir George Cayley in the early 19th century are the most famous. On 13 November 1907 a primitive helicopter with two sets of rotors lifted French mechanic Paul Cornu off the ground for 20 seconds. The problem with pioneer helicopters was control….
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