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Where does television come from?

Wherever you live, television pictures come to you from broadcasting stations located in various cities around the country. But they may get to you in several different ways. Many programs are transmitted from a local television mast. They go to the mast from the broadcasting stations along cable or via radio links. Then from the mast, the programs come to …

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Where does lichen Grow?

Lichens are found throughout the world, often occupying areas where no other plant can become established. They are found in their greatest numbers in the Alpine and Arctic regions, where they are the dominant form of vegetation. Lichens are the products of two distinct groups of plants. Together fungi and algae (seaweed is an algae) combine to produce lichens. Most …

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Where does candlewax go when a candle burns?

Nowhere-it simply changes into other substances. That is what burning does to everything. The moment you put a match to the wick, you start a change in the candle by turning the solid wax into a liquid. The liquid wax rises to the wick by an irresistible process called capillarity, the simplex example of which is the way blotting paper …

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Where do you find cowrie shells?

Cowrie shells are widely distributed and possibly the favourites among shell collectors because of their polished enamel-like surfaces and their beautiful colored patterns. The cowrie appears in all the warmer seas of the globe. But the great cowries, the tiger cowrie and the orange cowrie are natives of tropical regions. They crawl slowly, browsing on weeds, and are shy creatures …

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Where do Volcanoes occur?

We know that the Earth’s crust and the top part of the mantle are split into rigid sections, called plates, which are up to 70-100 km (43-62 miles) thick. Beneath the plates, temperatures are high and the rocks are semi-molten. Currents in the molten material are moving the plates about. Plates are moving apart along the ocean ridges. When they …

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Where do spacecraft get their power?

Spacecraft cannot carry large supplies of fuel and these aren’t any filling station in space. Instead, many have large panels of solar cells. These capture sunlight and turn it into electricity. The sun always shines in space, so there is always electricity to power the spacecraft. Some space probes travel to the outer planets far from the Sun. There the …

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