Advertisements
Advertisements
प्रश्न
What are renewable energy resources?
Advertisements
उत्तर
Renewable energy resources are those that come from natural sources and are naturally replenished. These include solar energy (sunlight), wind energy from windmill (wind), hydroelectricity (rain), tidal energy from waves (tides), and geothermal energy (energy from the heat of the earth).
APPEARS IN
संबंधित प्रश्न
What is a source of energy? What are the two main categories of the sources of energy?
Why is the leakage of LPG detected easily although it is odourless? State the steps to be taken in case its leakage is detected in the kitchen.
Describe how fossil fuels were formed.
Which fossil fuels were formed by the buried remains of small plants and animals?
The natural gas consists mainly of:
(a) methane
(b) ethane
(c) propane
(d) butane
The aviation fuel which is used in the engines of jet aeroplanes is:
(a) diesel
(b) kerosene
(c) petrol
(d) CNG
The pollution of air caused by burning petroleum fuels (like petrol and diesel) in vehicles can be controlled by fitting a device X in the exhaust system of vehicles.
Name the device
The pollution of air caused by burning petroleum fuels (like petrol and diesel) in vehicles can be controlled by fitting a device X in the exhaust system of vehicles.
How does this device help in controlling air pollution?
State whether the following statement is true or false:
Tidal energy is one of the forms in which solar energy manifests itself in oceans.
The major component of biogas is:
(a) hydrogen
(b) butane
(c) hydrogen sulphide
(d) methane
The gravitational pull of the moon cause the sea-water to rise periodically.
(a) What name is given to the condition of the sea when water to rise periodically.
(b) What name is given to the condition of the sea when its raised water recedes?
(c) What name is given to the energy which can be harnessed from this natural phenomenon?
(d) Draw labelled diagram to show how this energy can be harnessed from this natural
Fill in the blank
Solar cells use the power supplied by the ______.
State whether the following is True or False.
Coal and petroleum are renewable energy resources.
State whether the following is True or False.
Coal takes millions of years to form.
Can you tell?
Why should we maximise the use of non-conventional energy resources?
Who is the odd one out?
Name the major constituent of natural gas.
Choose the odd one:
Complete the crossword in figure with the help of the clues:
Across
1. Fuels obtained from dead remains of living organisms. (6, 5)
2. A process by which the various constituents of petroleum are separated. (8)
3. A porous black substance obtained from coal. (4)
4. Another name for motor fuel. (6)
Down
5. The substance obtained by carbonisation. (4)
6. Fuel for heavy motor vehicles. (6)
7. A petroleum product used for road surfacing. (7)
8. Dead remains of sea animals got converted into it. (9)
