a a cone-shaped hill or mountain around this opening, built up of the material that is forced out
b On 13 Feb 1947, the Leduc No 1 well, in Alberta, successfully tapped the huge Leduc oil field. By the end of 1947, some 30 wells in the field were producing 3500 barrels of oil a day
c a solid, hard black substance that burns and gives off heat. Coal is composed mostly of carbon. It is formed from partly decayed vegetable matter under great pressure and heat in the earth
d belonging to the structure of the earth’s crust and to general changes in it, such as folding or faulting
e The term "iron ore" is used when the rock is sufficiently rich in iron minerals to be mined economically
5 Multiple Choice Questions
produced by fire, great heat, or the action of a volcano; solidified from a molten state. Igneous rock is formed by the cooling and solidification of magma
an oily, dark-colored, flammable liquid found in the earth, consisting mainly of a mixture of various hydrocarbons
the science or art of metals. It includes the study of their properties and structure, the separation and refining of metals from their ores, the production of alloys, and the shaping and treatment of metals by heat and rolling
the heaviest, thickest form of petroleum
a metallic chemical element that looks like silver and is somewhat like iron. Nickel is hard and used as an alloy and in electroplating
5 True/False Question
potash → any on of several substances made from various minerals, wood ashes, blast furnace dust, or the like, and used in making soap, fertilizers, and glass
sedimentary rock → produced by fire, great heat, or the action of a volcano; solidified from a molten state. Igneous rock is formed by the cooling and solidification of magma
earthquake → an oily, dark-colored, flammable liquid found in the earth, consisting mainly of a mixture of various hydrocarbons
metamorphic rock → Rock changed in structure by heat, moisture, and pressure
petrochemical → a chemical made or derived from petroleum or natural gas