a a chemical made or derived from petroleum or natural gas
b 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
c 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.
d Rock changed in structure by heat, moisture, and pressure
e a cone-shaped hill or mountain around this opening, built up of the material that is forced out
5 Multiple Choice Questions
a metallic chemical element that looks like silver and is somewhat like iron. Nickel is hard and used as an alloy and in electroplating
a white, radioactive metallic chemical element that weighs more than any other element in nature
all of the surrounding things, conditions, and influences affecting the growth or development of living things
belonging to the structure of the earth’s crust and to general changes in it, such as folding or faulting.
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
5 True/False Question
soil conservation → a cone-shaped hill or mountain around this opening, built up of the material that is forced out
earthquake → a shaking or sliding of the ground. It is caused by the sudden movement of masses of rock along a fault or by changes in the size and shape of masses of rock far beneath the earth’s surface
bitumen → a metallic chemical element that looks like silver and is somewhat like iron. Nickel is hard and used as an alloy and in electroplating
minerals → a substance obtained by mining or digging in the earth
Canadian Shield → a huge, rocky region that curves around Hudson Bay like a giant horseshoe. The Shield covers half the land area of Canada.