Crude oil (also known as petroleum) is a type of fossil fuel found beneath the earth’s surface. It is formed by the gradual build-up of fossilised organic materials such as algae and plankton. As more layers build up, the bottom most layers are heated and subject to pressure, with the combination of heat and pressure leading to the matter transforming into the waxy substance kerogen. Following even more prolonged exposure to heat and pressure, the kerogen eventually becomes transformed into liquid and gases via the catagenesis process. The formation of crude oil occurs from this pyrolysis (heating) process. The range of heat at which kerogen becomes crude oil is called the oil window. Below this range the crude oil remains kerogen and above this point the crude oil becomes a natural gas.QUESTION:The creation of crude oil takes place over many 100 000s of years.TrueFalseCan not tell

Most of the compounds found in crude oil consist of carbon and what other element?

Write the scientific term:1. A gas that is produced during the formation of oil and trapped inpockets within rock layers below the earth's surface.(............................)2. A process uses pressured fluids to break layers of shale rocks andforce out the trapped natural gas, which can be collected andtransported(............................)Put (true) or (false):1. Natural gas is also known as methane gas. ( )2. Fracking fluids are good for underground water. ( )3. Methane gas is one of the greenhouse gases that are good for theenvironment.( )Give a reason for each of the following:a) Natural gas burns cleaner than coal, yet it is considered a pollutant. Why?......................................................................................................................................................................................................................................b) Humans use the fracking process.......................................................................................................................................................................................................................................Topic 6 (L1) Page 297 – 298

Most compounds in crude oil are hydrocarbons and most of these molecules are

Identify what crude oil and natural gas originally formed from.Bacteria, algae and micro-organisms living in seas that covered most of the planetLarge fish living in oceans that covered most of the planetOxygen combining with rock layers laid down in ancient oceansI'm not sure

Gasoline is produced by refining which fossil fuel?