moisture density test
61Concrete — This article is about the construction material. For other uses, see Concrete (disambiguation). Outer view of the Roman Pantheon, still the largest unreinforced solid concrete dome.[1] …
62Honey — For other uses, see Honey (disambiguation). Jars of honey and honeycomb …
63Gold — This article is about the metal. For the color, see Gold (color). For other uses, see Gold (disambiguation). platinum ← gold → mercury …
64Termite — Not to be confused with Termit (disambiguation), Thermite, or Turmite. This article is about insects. For other uses, see Termite (disambiguation). Termite Temporal range: 228–0 Ma …
65Basketball (ball) — A typical basketball. A basketball is a spherical inflated ball used in the game of basketball. Basketballs typically range in size from very small promotional items only a few inches in diameter to extra large balls nearly a foot in diameter… …
66pre-Columbian civilizations — Introduction the aboriginal American Indian (Mesoamerican Indian) cultures that evolved in Meso America (part of Mexico and Central America) and the Andean region (western South America) prior to Spanish exploration and conquest in the 16th …
67Drywall — For the musical group, see Drywall (musical project). Vertically hung drywall with joint compound. Drywall, also known as plasterboard, wallboard or gypsum board is a panel made of gypsum plaster pressed between two thick sheets of paper. It is… …
68Biodegradable plastic — For information on plastics derived from renewable raw resources (biomass), see Bioplastic. For information on plastics designed to biodegrade in human bodies, see Biodegradable polymer. Utensils made from biodegradable plastic. Biodegradable… …
69space exploration — Investigation of the universe beyond Earth s atmosphere by means of manned and unmanned spacecraft. Study of the use of rockets for spaceflight began early in the 20th century. Germany s research on rocket propulsion in the 1930s led to… …
70Actinide — The atomic bomb dropped on Nagasaki had a plutonium charge.[1] The actinide or actinoid (IUPAC nomenclature) series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium thro …
