level: fossil fuels
Questions and Answers List
level questions: fossil fuels
| Question | Answer |
|---|---|
| explain how coal is formed | -remains of ferns and trees -plant remains covered with sediment rock and compressed -hight temp and pressure created coal |
| why do the plants used to make coal not decompose when dead | due to a lack of oxygen or acidic conditions that would allow bacteria to decompose the plants |
| how is crude oil formed | -plankton that have died -settle in mud and compressed by sediment -heat and pressure turn them into crude oil |
| name a natural gas | methane |
| where are natural gases usually found | oil deposits |
| similarity of the formation of crude oil and natural gas | both made from dead plankton |
| why do all fossil fuels contain carbon | it was a part of the carbon dioxide that was taken in from photosynthesis |