WONDER #1427: What Are Fossil Fuels?

Question 1 of 3

As prehistoric plants and animals died and decomposed on the bottoms of swamps and oceans, they formed layer after layer of a spongy material called what?

  1. rock
  2. mud
  3. peat
  4. sand

Question 2 of 3

Fossil fuels are rich in what element?

  1. oxygen
  2. nitrogen
  3. phosphorous
  4. carbon

Question 3 of 3

Which of the following is NOT an example of a fossil fuel?

  1. coal
  2. oil
  3. natural gas
  4. wind

Check your answers online at https://www.wonderopolis.org/wonder/what-are-fossil-fuels.