The oceans, which cover 70 percent of the planet, are an unknown world to us. The Pacific Ocean is the largest one.
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The lowest point on the Earth is also there. It is called Challenger Deep and it was discovered in 1875.
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Without the energy from the Sun, the Earth would have no life at all. Nowadays everyone knows that the Sun is a star. Like all stars, the Sun is a great burning ball of gases.
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In the past, many people believed that the Earth was the centre of the universe. They thought that the Sun and the stars went round it. Only in 1543, a great Polish scientist published a book in which he tried to prove a different point of
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Since 2007 high-speed trains have become a common type of transport in Europe. They make it possible to cut travel times by hours. The trains travel at 350 kilometres an hour, and this is not the limit!
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For the passengers, the situation is different. For their comfort, all the carriages are made sound-proof from the inside.
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Netball is played by over 20 million people in more than 70 countries of the world. It was invented in 1892 as women’s basketball.
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During the 20th century, the game became very popular in English-speaking countries. Traditionally, only girls and women played netball.
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Studies of the atmosphere first received technical support in 1912. Equipment to measure temperature and pressure was invented in Germany. But the question was how to raise it high into the air.
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In 1921, Russian engineers suggested using planes. The special equipment was put on planes that made regular flights.
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Most people enjoy watching the night sky. And the brightest object in the sky is the Moon. Every night the Moon rises in the East and sets in the West.
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It takes about 27 days to go around the Earth, and it’s an interesting fact that we always see the same side of the Moon. The Moon is the closest object to the Earth.
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Around 80 percent of the world’s population has a mobile phone. The mobile phone industry is the fastest growing industry in the world. From 1983 to 2016, worldwide mobile phone subscriptions grew to over seven billion.
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Table tennis has a different scoring system, a smaller ball, smaller rackets, and a smaller playing area. Modern table tennis was invented at the end of the 19th century in England.
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Very soon the new sport became popular all over the world. In 1901, competitions with over 300 participants were already being held. According to numerous studies, table tennis has great effects on human health.
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A zoo, also known as a zoological park or a zoological garden, gives people the opportunity to watch animals from different continents. There are hundreds of zoos all over the world.