Petroleum, or crude oil, is a smelly, yellow-to-black liquid and is usually found in underground areas called reservoirs.
Oil was formed from the remains of animals and plants (diatoms) that lived millions of years ago in a marine (water) environment before the dinosaurs.
Petroleum is a naturally occurring, yellow-to-black liquid found in geological
formations beneath the Earth's surface, which is commonly refined into various ...
There are some places on earth where oil is not trapped underground, but
actually seeps out at the earth's surface—Think Jed Clampett and a "bubbling
Petroleum or crude oil is a fossil fuel. Find out how petroleum was formed and a
history of its development into the oil products we see today.
Petroleum products are produced from the processing of crude oil and other
liquids at petroleum refineries, from the extraction of liquid hydrocarbons at
Petroleum (Latin Petroleum derived from Greek πέτρα (Latin petra) - rock + έλαιον
(Latin oleum) - oil) or crude oil is a naturally occurring liquid found in ...
Petroleum definition, an oily, thick, flammable, usually dark-colored liquid that is a
form of bitumen or a mixture of various hydrocarbons, occurring naturally in ...
Define petroleum: a kind of oil that comes from below the ground and that is the
source of gasoline and other products.
Oil and natural gas together make petroleum. Petroleum, which is Latin for rock
oil, is a fossil fuel, meaning it was made naturally from decaying prehistoric plant
Jul 18, 2012 ... Petroleum, complex mixture of hydrocarbons that occur in the Earth in liquid,
gaseous, or solid forms. The term is often restricted to the liquid ...