WHAT HAPPENS WHEN A VOLCANO ERUPTS?

A volcano erupts when hot molten rock from deep inside the Earth bursts out of the ground. Rivers of liquid rock, called lava, flow down the side of the volcano burning trees, houses, and anything else in their paths. An exploding volcano may also fling out ash, mud, and poisonous gases. Volcanoes are not just destructive, however, and often create new mountains and islands.

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ARE All STARS THE SAME?

No, every Star is unique. With the exception of the Sun, stars are all so far away from Earth that they appear as pinpoints of twinkling light to us. But even though they may look the same to the naked eye, they all have their own characteristics, different in size, temperature, colour, and brightness, depending on how old they are.

HOW DO WE SPEND FREE TIME?

People have found ways of relaxing and enjoying leisure time since history began. Some of the games we still play today have ancient origins, but the media and technology boom of the 20th century brought a rush of new entertainment and pastimes, with the spread of popular newspapers, cinema, recorded music, radio, television, and computer games.

WHY DO IDENTICAL TWINS LOOK EXACTLY THE SAME?

Identical twins happen when a single sperm (male cell), fertilizes a single egg (female cell) that then splits in two. Each one goes on to grow into a baby, but both cells share exactly the same genetic instructions (DNA) . DOUBLE (OR TRIPLE) TROUBLE! The number of births in which twins or triplets are likely to occur naturally: 1: Identical twins 4 in 1000 births 2: Non-identical (fraternal) twins 15 in 1000 births 3: Identical triplets 1 in 100000 births 4: Non-identical triplets 1 in 8000 births

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