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about twenty percent of the world's present energy comes from the sun in one form or another. Special devices have already been made available to put on the roofs of houses and flats to catch the sun's rays and thus heat water. Thousands of these devices are now being used to provide energy in homes throughout the United States while more than a million solar water-heating units have already been built in homes in Japan. Other purposes for which solar energy is at present, being used include the separation of salt from seawater, irrigation and sewage disposal. For most people in developing countries, the need is not air-conditioners or central heating, but for cheap ways of cooking food, drying crops, and lighting homes.
1.what have people made to help houses and flats to catch the sun's rays?
They have put special devices on the roofs of houses and flats to catch the sun's rays
2.where have people built more than a million solar water-heating units?
In the USA
3.is the solar energy being used to remove salt from seawater at present?
Yes, it is
4.what do people in developing countries need?
They need cheap ways of cooking food, drying crops, and lighting homes.
Are you looking for a cheap. clean, effective source of power that doesn't cause pollution or waste natural resources? Look no further than solar energy from the sun. At present, most of our electricity comes from the use of coal, gas, oil, or nuclear power. This power could be provided by the sun. One percent of the solar energy that reaches the Earth is enough to provide power for the total pollution. Many countries are already using solar energy. Solar panels are placed on the roof of a house and the Sun's energy is used o heat water. The energy can be stored for a number of days, so on cloudy days you can use solar energy. Sweden has an advanced solar energy program. There, all buildings will be heated by solar energy and cars will use solar energy instead of gas by the year 2015.
True or False sentence:
1...........T.........Solar energy can be cheap and clean.
2........F............Most of our electricity now comes from nuclear power.
3..........F..........the solar energy that gets to the Earth cannot provide enough power for the world's population.
4..............T......Solar energy can be used on cloudy days.
5...........T.........All buildings in Sweden will be heated by solar energy in 2050.
Are you looking for a cheap. clean, effective source of power that doesn't cause pollution or waste natural resources? Look no further than solar energy from the sun. At present, most of our electricity comes from the use of coal, gas, oil, or nuclear power. This power could be provided by the sun. One percent of the solar energy that reaches the Earth is enough to provide power for the total pollution. Many countries are already using solar energy. Solar panels are placed on the roof of a house and the Sun's energy is used o heat water. The energy can be stored for a number of days, so on cloudy days you can use solar energy. Sweden has an advanced solar energy program. There, all buildings will be heated by solar energy and cars will use solar energy instead of gas by the year 2015.
True or False sentence:
1........T............Solar energy can be cheap and clean.
2..........F..........Most of our electricity now comes from nuclear power.
3...........F.........the solar energy that gets to the Earth cannot provide enough power for the world's population.
4.............T.......Solar energy can be used on cloudy days.
5....................All buildings in Sweden will be heated by solar energy in 2050.
Cars will use solar power instead of gas in Sweden by the year 2015.
OR: In Sweden, cars will use solar power instead of gas by the year 2015.