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