The fossil fuel are formed under the earth's surface from dead plants or animals, after a.............Period of time
long
Very long
short
The two main types of fuel are..............
Water and wind
Fossil fuel and biofuel
The sun and the moon
when carbon dioxide gas inceases, the earth’s tempeature .....
Decreases slowly
Increases slowly
doesn't change
The genentor inside the elecric power station, turns................
Steam into water
Kinetic energy into electrical energy
Elenrical energy into kinetic energy
which of thefollowing sentences describes the most important thing for the driver, during driving a car for a long distance
The presence of a radio
The fuel tank contains enough amount of gasoline
The presence of a speedometer
we have to ............, to produce steam inside the electric power station.
Heat the water
Cool the water
freeze the water
we have to protect sones of buildings from..............
Oxygen gas
acid rain
global warming
the devices in the electric power station which opeated by steam are...............
the turbines
the cables
the tubes.
The fuel must be ...... at first to move a car.
burned inside the car engine
cooled
freezed
car engine can be operated by......
Gasoline only
Coal only
Gasoline and natural gas.