what is the emoje ?
angry bird
2. Turning off lights that we do not need, is a way to conserve electricity.
true
1. Some forms of fuel can be used in cooking such as............. ,................ and .............
wood ,coal and natural gas
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
3.
c. green plants
Correct: 1. Fuel is the matter that produces (electrical )energy on burning.
thermal
3. We can make liquid biofuel from wood chips and grass.
true
3. Hydroelectrical energy, is used to produce (water) from waterfalls and dams.
electricity
guess the emoje
cow boy
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
Give a reason for the following : Cutting trees to obtain wood has negative effects on the environment.
because rapid cutting causes deforestation
3. Using the ...................resources of energy is more expensive than using fossil fuel
renewable
4
d. rain water
2.
d. oil and coal
Put (✓) or (x) : 1. Wind energy will run out faster than natural gas.
false
2. Wood is a form of( fossil fuel,) that can be used in houses
biofuel
4. As the speed of the car increases, the amount of used fuel decreases.
false
the emojie
sun glasses
4. Gases emitted from burning fossil fuel always (clear) the air.
pollute
2. The electric generator changes ..............energy into................ energy.
kinetic to electric
4. Different forms of fuel can be classified into two main types which are ..............and ...........
biofuel - fossil fuel