1) an alloy of iron and carbon that is used in many industries and construction projects. a) WOOD b) STEEL c) PLYWOOD d) GLASS 2) something is resistant to burning or the effects of fire a) FIRE HYDRANT b) FIRE EXTINGUISHER c) FIRE RESISTIVE d) FIRE FLY 3) a structural tissue/material found as xylem in the stems and roots of trees and other woody plants a) WOOD b) CONCRETE c) GLASS d) STEEL 4) made from natural and abundant raw materials (sand, soda ash and limestone) that are melted at high temperature to form a new material: a) STEEL b) WOOD c) GLASS d) CONCRETE 5) consisting or made of material that does not burn if exposed to fire. a) INCOMBUSTIBLE b) COMBUSTIBLE c) REVERSIBLE d) COMPATIBLE 6) made from a mixture of broken stone or gravel, sand, cement, and water, that can be spread or poured into molds and that forms a mass resembling stone on hardening. a) GLASS b) CONCRETE c) STEEL d) WOOD

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