5th Grade Science -Fossil Fuels

• ^{Rocks are broken into smaller pieces that remain in the same location.}
• Pressure compacts layers of sediment and turns them into rock.
• Pieces of rock or soil are carried from one place to another.
• Sediment grains fall to the bottom of a lake to form sedimentary layers.

• The dead plants sink to the bottom of the pond and get
  buried by sediment for millions of years.
• The dead plants get buried for millions of years and form fossils that attract carbon.
• The dead plants sink to the bottom of the pond and are consumed by decomposers.
• The dead plants produce carbon that is consumed by fish, which form fossils.

• Mostly sand and a few small bits of wood
• Mostly decaying organisms
• Mostly lava and a few sedimentary rocks
• Mostly metal minerals

• Sedimentary rock is made of layers.
• Sedimentary rock is cemented bits of rock.
• Sedimentary rock is often limestone.
• Sedimentary rock is common in Texas.

All of these are related to the formation of oil or natural gas EXCEPT -

• decomposed animals
• decayed plants
• sedimentary rocks
• active volcanoes

• Sand in the sediment melts and turns into rock.
• The weight of the water compacts the sediment into rock.
• Changing water temperatures turn sand in the sediment into rock.
• Pollution caused by humans turns the sediment into rock.