1. O, N - Drilling is the method used to extract oil and natural gas from underground reservoirs.
2. C, O, N - Coal, oil, and natural gas are nonrenewable because they take millions of years to form and cannot be replenished on a human timescale.
3. C - Mercaptan is an odorant added to natural gas for safety, but it is not directly related to coal; however, the term may be misapplied here as mercaptan is primarily associated with natural gas (N). Correction: N - Mercaptan is added to natural gas to give it a detectable smell for leak detection.
4. None - The Sun is not directly related to coal, oil, or natural gas; it is the original energy source for fossil fuels but not a fuel itself.
5. C, O, N - Carbonized plant matter refers to organic material transformed over time into coal (C), oil (O), and natural gas (N).
6. O - Crayons, wax, and jet fuel are derived from petroleum (oil) products.
7. C, O, N - Fossil fuel is the general term encompassing coal, oil, and natural gas, formed from ancient organic matter.
8. C - Bituminous and lignite are types of coal, representing different stages of coalification.
9. O, N - Fracking (hydraulic fracturing) is a technique used to extract oil and natural gas from shale formations.
10. C, O, N - The Tethys Ocean was an ancient sea whose organic-rich sediments contributed to the formation of coal, oil, and natural gas deposits in surrounding regions.
11. Sub-bituminous
12. Lignite
13. Bituminous
14. Anthracite
15. Bituminous
Parent Tip: Review the logic above to help your child master the concept of fossil fuels worksheet.
