Fossil Fuels

• What are the three types of fossil fuels mentioned?

  Coal, oil, and gas
• How are fossil fuels formed?

  Over millions of years from organic remains
• Why are fossil fuels considered non-renewable?

  They will run out if used continuously
• What is the process of coal formation?

  • Formed from remains of ferns and trees
  • Occurs in marshy wetlands
  • Lack of oxygen or acidic conditions prevents decomposition
  • Covered with sediment and compressed
  • High temperature and pressure create coal
• What are the conditions necessary for coal formation?

  Lack of oxygen and acidic conditions
• How is crude oil formed?

  • Formed from plankton in the sea
  • Plankton settles in mud on the seabed
  • Lack of oxygen prevents decomposition
  • Compressed by sediment and heat
  • Converted into crude oil
• What are plankton?

  Tiny plants and animals found in the sea
• What is the formation process of natural gas?

  • Mainly consists of methane
  • Formed from plankton like oil
  • Often found near oil deposits
  • Created under heat and pressure
• What is the main component of natural gas?

  Methane
• What do old fossil fuels contain that is significant?

  Trapped carbon from carbon dioxide
• What role does photosynthesis play in fossil fuel formation?

  • Takes in carbon dioxide
  • Produces oxygen
  • Carbon becomes part of fossil fuels
• What will be discussed in a later video regarding fossil fuels?

  The effects of burning fossil fuels
• Where can students find questions on fossil fuels?

  In the my ization workbook
• What has changed in the atmosphere over time regarding gases?

  More oxygen and less carbon dioxide now
• What was the composition of the early atmosphere?

  High carbon dioxide, virtually no oxygen
• How does the formation of coal differ from that of oil?

  Coal forms from ferns; oil from plankton