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Petroleum |
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| Flesch-Kincaid grade level: | 4.67 |
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Petroleum
By Meg Leonard |
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1 Oil is another name for petroleum. Petroleum means "rock oil." Oil is naturally made from the remains of sea plants and animals. These plants and animals lived at the time of the dinosaurs. When the plants and animals died, they sank to the bottom of the sea. Mud covered them. Heat and pressure from the mud caused the decaying plants and animals to turn into crude oil after millions of years. This is the oil that comes straight out of the ground. It is smelly. It is yellow to black in color. It is found in underground reservoirs. Workers drill into the ground to bring the crude oil to the surface. The crude oil is taken to a refinery where it is separated .....