Fossil and Soil Formation
Sedimentary Rock—Rock that is formed when pieces of sediment are cemented back together to make new rock
Lithification—the process of changing sediments back into rock
Compaction + Cementation = Lithification
Compaction-- the weight of layers of sediment upon layers of sediment causes pressure that makes the layers more compact
Cementation-- Dissolved minerals become deposited in the spaces between sediments. These minerals act like glue to cement the sediments together
Fossils—preserved remains or impressions left by dead plants or animals from long ago; Most fossils are found in sedimentary rock.
Fossils provide evidence of past living organisms and the type of environments in which they lived.
Fossil Fuel—a fuel that formed from the decayed remains of ancient plants and animals
• Coal, oil, and, and natural gas are fossil fuels.
• Fossil fuels are burned by power plants to produce electricity.
• Fossil fuels produce energy to run vehicles and provide electricity to homes and businesses.
• Burning fossil fuels releases carbon dioxide into the air and creates air pollution.
Lithification—the process of changing sediments back into rock
Compaction + Cementation = Lithification
Compaction-- the weight of layers of sediment upon layers of sediment causes pressure that makes the layers more compact
Cementation-- Dissolved minerals become deposited in the spaces between sediments. These minerals act like glue to cement the sediments together
Fossils—preserved remains or impressions left by dead plants or animals from long ago; Most fossils are found in sedimentary rock.
Fossils provide evidence of past living organisms and the type of environments in which they lived.
Fossil Fuel—a fuel that formed from the decayed remains of ancient plants and animals
• Coal, oil, and, and natural gas are fossil fuels.
• Fossil fuels are burned by power plants to produce electricity.
• Fossil fuels produce energy to run vehicles and provide electricity to homes and businesses.
• Burning fossil fuels releases carbon dioxide into the air and creates air pollution.
Soil is very important for life on earth. It
provides nutrients and stability plants need to grow. Animals depend on plants for food and oxygen. Without soil, humans and other animals couldn't survive. Earthworms help the soil in many ways. As they burrow, they create holes in the soil which allow air and water to reach roots of plants and allow water to drain. Earthworms also add nutrients to the soil by decomposing dead organisms. Loam makes for good soil for many crops. |