Advertisements
Advertisements
Question
What are renewable energy resources?
Solution
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
RELATED QUESTIONS
Name two energy sources that you would consider to be renewable. Give reasons for your choices.
Give the names of two energy sources that you would consider to be exhaustible. Give reasons for your choices.
Fill in the following blank with a suitable word:
The amount of heat produce by burning a unit mass of a fuel completely is known as its ............ value.
What is a source of energy? What are the two main categories of the sources of energy?
What is meant by a renewable source of energy? Give two examples of renewable sources of energy.
Why is LPG considered a better fuel than coal?
The main constituent of petroleum gas is:
(a) methane
(b) ethane
(c) butane
(d) propane
A substance X is added to LPG cylinders while filling so as to make the detection of leakage of LPG from the cylinder easy.
How does substance X make the detection of leakage of LPG easy?
Which of the following sources of energy are not derived from the sun?
Biomass, Wind, Ocean thermal energy, Geothermal energy, Nuclear fuels, Hydroelectricity, Wave energy, Coal, Petroleum, Tidal energy
Answer the following question.
Write the name of the main constituent of Biogas. Also, state its percentage.
Describe the four major types of coal.
Can you tell?
What are the non-conventional energy resources?
Why is charcoal considered better fuel than wood?
Higher Order Thinking Skill (HOT)
What are the objectives for replacing non-conventional energy resources from conventional energy resources?
Which among the following is the non-renewable resources?
Why is there a need to harness non-conventional sources of energy? Give two main reasons.
Write True/False against the following statement.
Wildlife is an exhaustible natural resource.
Imagine that all the exhaustible natural resources are exhausted by human activities. Do you think survival of living beings would be possible? If yes, why? If not, why not?
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)