ESS
Grade-10
Easy
Question
Across
2. Coal is extracted through ______.
3. Disadvantage of using fossil fuel.
6. Fossil fuels are derived from ______.
7. Advantage of using fossil fuels.
Down
1. Burning of fossil fuel produces _____.
4. Fossil fuels are rich in carbon and _____.
5. Due to constant heat and pressure, buried plants turned into _____.
- Down: 1. Greenhouse gas, 4 – Hydrogen, 5 – Coal;
Across: 2 – Mining, 3 – Global warming, 6 – Decayed organism, 7 – Energy
- Down: 1 – Greenhouse gas, 4 – Nitrogen, 5 – Fuel;
Across: 2 – Mining, 3 – Global farming, 6 – Decayed organism, 7 – Energy
- Down: 1 – Greenhouse gas, 4 – Oxygenic, 5 – Dirt;
Across: 2 – Mining, 3 – Global raring, 6 – Degrade organism, 7 – Energy
- Down: 1 – Greenhouse oil, 4 – Hydrogen, 5 – Cole;
Across: 2 – Mining, 3 – Global warning, 6 – Decayed organism, 7 - Energy
Hint:
Coal is extracted through Mining. The disadvantage of using fossil fuels include global warming. Fossil fuels are derived from decaying organisms. Burning of fossil fuels produces greenhouse gas. Fossil fuels are rich in carbon and hydrogen. Due to constant heat and pressure, buried plants turned into coal.
The correct answer is: Down: 1. Greenhouse gas, 4 – Hydrogen, 5 – Coal;
Across: 2 – Mining, 3 – Global warming, 6 – Decayed organism, 7 – Energy
- There are two ways to get coal out of the ground: surface mining and underground mining.
- The primary cause of global warming is fossil fuels.
- Carbon dioxide, a greenhouse gas, is released into the atmosphere in massive quantities when fossil fuels are burned.
- Both carbon and hydrogen are abundant in fossil fuels. The majority of hydrogen is generated from fossil fuels by coal gasification, steam reforming, and partial oxidation of methane. Only a small amount uses alternative methods, such as water electrolysis and biomass gasification.
- Decomposing vegetation and animals make up fossil fuels. These fuels, which are found in the Earth's crust, can be burned to provide energy.
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