AGST 2012 3rd 9 Weeks Test
About this set
Created by:
stoddardc on March 13, 2012
Subjects:
agricultural science and technology
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57 terms
Terms | Definitions |
|---|---|
 Agricultural equipment | Implements used in the agricultural industry to produce plants, animals, and other products |
| Agricultural mechanization | The use of complex machines, often powered, to do work in the agricultural industry |
| Agricultural power | The use of engines, motors, and other sources of power to do work in the agricultural industry |
| Agricultural structures | Facilities used in the agricultural industry, including barns, poultry houses, grain elevators, earthen structures such as ponds, and other kinds of structures |
| Compound machine | A machine, often large, that is comprised of many simple machines |
| Mechanical advantage | The amount that a machine increases force, such as a lever increases force |
| Shop | A building in which mechanical work is performed; sometimes called an agricultural mechanics laboratory |
| Simple machine | A device or machine that has only one or two parts such as a wheel and axle |
| Tractor | A moving vehicle, usually with wheels or tracks, with an engine that provides power for other equipment |
| Ground fault circuit interrupter (GFCI) | Safety device that prevents ground faults (electrical shock) when operating power tools and using electricity |
| Operator's manual | A written description of how to safely use and maintain equipment; provided by manufacturer |
| Blade balance | A device used to balance a lawn mower blade to prevent excess vibration during operation |
| Board foot | A wood measurement of 144 cubic inches; board dimensions of 12 inches by 12 inches by 1 inch |
| Circular saw | A motor-driven power hand saw with round blade |
| Common nail | A kind of nail with a flat head that is used in general construction |
| Concave bevel | A bevel which is hollowed or curved inward |
| Convex bevel | A bevel which is raised or curved outward |
| Crosscut | To cut across the grain of wood |
| Crosscut hand saw | A saw with small teeth (more teeth per inch) for cutting across the grain of wood |
| Dado | A square or rectangular groove in the face of a board |
| Double inclined plane | A plane made by two bevels creating a point similar to that of an axe |
| Finishing nail | A slender nail with a small head used for interior trim work |
| High speed drill | Twist drill made tempered specially to drill holes in steel |
| Hollow ground | A single inclined plane which is concave ground |
| Hone | The process of finely sharpening a cutting edge with a bench stone or hand stone |
| Kerf | Opening in board made by the cutting of a saw blade; also referred to as saw kerf |
| Kickback | A safety hazard that results when a saw blade binds in the material being cut resulting in uncontrollable throwing of the material or saw |
| Rabbet | A cut or groove at the end of a board made to receive another board and form a joint |
| Rip | To cut along the grain of wood |
| Rip hand saw | A saw with larger teeth (fewer teeth per inch) for cutting with the grain of wood |
| Revolutions per minute (RPM) | The number of times a rotating shaft or blade turns or rotates in sixty (60) seconds |
| Single incline plane | A type of bevel with one edge; used on wood chisels and plane irons |
| Twist drill | Common drill bit used for making round holes in wood and metal |
| Acetylene | gas fuel used in acetylene welding |
| Alloy | a mixture of two or more metals |
| Alternating current | current that reverses itself sixty (60) times per second |
| Amperage | the measurement of electrical flow in a conductor |
| Anneal | to cool steel slowly so as to make it soft and malleable |
| Bead | continuous and uniform line of filler metal |
| Brazing | bonding with metals and alloys that melt above 840 degrees F when capillary action occurs |
| Carburizing flame | a flame with an excess of acetylene in the mixture |
| Direct current (DC) | current that flows in one direction continuously |
| Electrode | a metal welding rod coated with flux used in electric arc welding |
| Ferrous | metal that is made with iron ore |
| Flux | material on an arc welding rod that cleans the metal, aids in proper cooling, and produces a gas shield for the weld |
| Fusion weld | to join parts by melting them together |
| Gauge | with sheet metal, a thickness scale used to identify the thickness of metal under one-fourth inch |
| Neutral flame | a flame with a balance of oxygen and acetylene |
| Non-ferrous | metals that do not contain iron |
| Oxidizing flame | a flame with an excess of oxygen |
| Oxygen | gas in the atmosphere that supports combustion; used in some kinds of welding to promote burning of a hot flame |
| Polarity | the direction of electrical flow in the arc welding circuit (positive and negative) |
| Shielded metal arc welding | welding with electrical power as a source of heat using rods and flux that forms a gaseous shield around the molten metal until it solidifies |
| Solder | a mixture of tin and lead used to fasten together sheet metal and electrical connections |
| Temper | the process of heating tool-grade steel followed by carefully controlled cooling to gain the desired degree of hardness |
| Welding | fusing two pieces of material using a heat process; most commonly used with metal and plastics |
| Working pressure | a continuous regulated pressure supplied to the oxyacetylene torch assembly |
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