1. Some forms of fuel can be used in cooking such as............. ,................ and .............
wood ,coal and natural gas
2. The electric generator changes ..............energy into................ energy.
kinetic to electric
3. Using the ...................resources of energy is more expensive than using fossil fuel
renewable
4. Different forms of fuel can be classified into two main types which are ..............and ...........
biofuel - fossil fuel
Correct: 1. Fuel is the matter that produces (electrical )energy on burning.
thermal
2. Wood is a form of( fossil fuel,) that can be used in houses
biofuel
3. Hydroelectrical energy, is used to produce (water) from waterfalls and dams.
electricity
4. Gases emitted from burning fossil fuel always (clear) the air.
pollute
What happens if ... ? We use renewable resources of energy instead of fossil fuel. (according to Earth's temperature)
the earth's temperature will not increase
Put (✓) or (x) : 1. Wind energy will run out faster than natural gas.
false
2. Turning off lights that we do not need, is a way to conserve electricity.
true
3. We can make liquid biofuel from wood chips and grass.
true
4. As the speed of the car increases, the amount of used fuel decreases.
false
Choose the correct answer : 1. Coal is formed under the Earth's surface from the remains of ............ a. dead animals. c. dead humans. b. dead plants. d. dead insects.
b- dead plants
2.
d. oil and coal
3.
c. green plants
