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 our sun. At present, most of our electricity comes from the use of coal and 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 population. Many countries have already used solar energy. Solar panels are placed on the roofs of our house and the Sun’s energy is used to heat water. The energy can be stored for a number of days, so on cloudy days you can use solar energy, too. 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
19.Does solar energy cause pollution?
a. Yes, it does.
b. No, it doesn’t.
c. No. Solar energy causes pollution
d. Yes. Solar energy causes pollution
20.How much solar energy is enough for the world’s population?
a) Two percent of the solar energy.
b) One- third of the solar energy.
c) One– fifth of the solar energy.
d) One percent of the solar energy.
21.Where are solar panels installed?
a) They are placed in the garden of the house.
b) They are placed on the branches of the tall trees behind the house
c) They are placed on the floor of the house
d) They are placed on the roofs of the house
22.How can we use solar energy on cloudy days?
a) The energy can’t be stored for a number of days
b) The energy can be stored for a number of days
c) Solar energy can only use on the sunny days.
d) The Sun’s energy is used to heat water.
23.When will cars use solar power instead of gas in Sweden ?
a) by the year 2050
b) by the year 2055
c) by the year 2015
d) by the year 2035
giúp tui với mn
