AR Ag Mechanics Word Scramble
|
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Term | Definition |
Agricultural mechanics | a broad area of knowledge and skills related to performing construction, operation, maintenance, and repair of machinery, equipment, and structures used in agricultural/horticultural work |
Agricultural power | the use of engines, animals, and other sources of energy to operate equipment used in agriculture |
Agricultural structures | those buildings, ponds, greenhouses, and other facilities designed specifically for agricultural use |
Agricultural technology | the application of science and inventions in agricultural work; the use of science to develop new ways of doing things |
Combustion | the production of heat and/or light through a chemical process; burning |
Decibel (dB) | a unit of sound measurement |
Extinguish | to put out a fire by cooling, smothering, or removing fuel |
Fire triangle | a three dimensional representation of requirements for fire to occur: fuel, heat, and oxygen |
Personal Protective Equipment (PPE) | equipment that protects people from injury, including safety glasses, goggles, ear plugs or muffs, respirators, clothing, shoes or boots, and gloves |
Safety | preventing loss or injury |
Alternating Current (AC) | current that reverses its direction 60 times per second |
Arc welding | using an electric arc to fuse metal |
Bead | mix of base metal and filler rod that remains after welding |
Direct Current (DC) | current that flows in one direction continuously |
Electrode | a section of flux-coated wire used in welding |
Flux | a substance used to remove the oxide on metal that is to be soldered or welded |
Fusion | the union or blending of molten metal to form a strong bond |
Penetration | distance in a weld from the original surface of the base metal to that depth or point at which fusion ceases |
Slag | the product formed when buring steel combines with oxygen |
Weld | joining two or more times by fusion |
Welding helmet | a protective device worn on the head while arc welding to protect the eyes, skin, and other exposed parts from injury |
Welding position | the location of a weld relative to the location of the welding equipment, such as flat, vertical, horizontal, or overhead |
Bleeding the lines | removing gas pressure from all lines and equipment, as with oxyacetylene welding systems |
Brazing | the process of joining metal with a filler rod that melts at a temperature below the metal being joined |
Carbonizing flame | a flame with excess acetylene; adjustment is needed to achieve a neutral flame |
Cutting tip | a special tip used in cutting metal with gas systems such as oxyacetylene |
Filler rod | a long, thin metal rod used in welding to add to or fill joins when welding or brazing |
Flammable | the quality of a substance that is capable of burning |
Fusion | the process of joining by melting |
Gauge | a device used to measure certain substances such as pressure in an oxyacetylene welding/cutting system |
Neutral flame | an oxyacetylene flame with a balance of oxygen and acetylene |
Oxidizing flame | an oxyacetylene flame with an excess of oxygen; adjustment is needed to achieve a neutral flame |
Regulator | a device that controls the flow amount of a liquid or gas; with oxyacetylene welding systems, regulators control the flow of oxygen and acetylene |
Tip | the part of a welding or cutting torch with holes to release fuel for combustion |
Tip cleaner | small, round rod-like devices that remove dirt from the holes in welding and cutting torch tips |
Torch | the assembly in an oxyacetylene system that mixes oxygen and acetylene to provide the desired flame |
Valve | a device that controls the flow of gas in an oxyacetylene system |
Die | a device or instrument used to cut threads on a rod or bolt |
Rivet | a short rod-like fastening device made of soft metal that can be readily spread on each end |
Solder | a mixture of tin and lead |
Soldering | bonding metals and alloys that melt at temperatures below 840° F |
Sweating | the process of soldering a piece of copper pipe into a fitting |
Tap | a hardened and brittle fluted tool used to cut threads inside of metal |
Tinning | the process of bonding filler material to a base metal |
Four cycle engine | an engine with four strokes per cycle |
Internal combustion engine | a device that converts the energy in fuel into rotating power |
Stroke | the movement of a piston from top to bottom or from bottom to top |
Top Dead Center (TDC) | position of the piston at its highest point |
Two-stroke cycle engine | an engine with two strokes per cycle |
Architect scale | a specialized ruler used in making or measuring reduced scale drawings; it is marked with a range of calibrated scales or ratios |
Border line | heavy black line drawn close to the outer edge of paper used for drawing plans |
Drawing | a likeness of an object, individual, or other subject made with a pencil, pen, or other instrument |
Pictorial drawing | kinds of drawings that show an object in three dimensions; common types are isometric, oblique, and perspective |
Scale | an instrument with all increments shortened in a consistent proportion |
Sketch | a rough drawing of an idea, object, or procedure |
Title block | the section of a drawing reserved for information about the drawing in general |
Triangle | a drafting instrument shaped as a thin flat right-angled triangle with two other angles of 45° or other angles of 30° and 60°, respectively |
Cold chisel | a hand tool made of hardened steel for cutting metal by striking with a hammer |
Mushroomed | a spread or pushed over condition caused by being struck repeatedly |
Temper | to heat a piece of tool sheet followed by controlled cooling so as to control the degree of hardness |
Whet | to sharpen by rubbing on a stone |
Fitting | a part used to connect pieces of pipe or to connect other objects to pipe |
Flaring | the process of enlarging the opening of tubing in a bell shape |
Pipe | rigid tube-like material often used in plumbing |
PVC | a type of plastic pipe and fittings made of polyvinyl chloride |
Reaming | the process of removing the bur from the inside end of steel pipe after it has been cut |
Tubing | flexible pipe often made of copper or plastics |
Valve | a device that controls the flow of water, gas, or other substance |
Crosscut | the process of cutting across the grain of wood |
Grain | lines in lumber resulting from the annual growth rings of the tree from which the lumber was manufactured |
Hardwood | wood with smaller grain that is denser and more difficult to cut; e.g., oak and maple |
Kerf | the cutaway opening made when sawing or otherwise cutting materials |
Lumber | wood products made by sawing logs |
Plywood | wood products made by glueing thin sheets of wood together in layers |
Softwood | wood with larger grain that is less dense and easier to cut; e.g., pine and fir |
Ampere | a measure of the rate of flow of a current in a conductor |
Circuit | an electrical source and wires connected to an electrical device |
Circuit breaker | a switch that trips and breaks the circuit when more than a specified amount of current passes through it |
Conductor | any material that will permit an electron to move through it |
Conduit | protective tube with individual insulated wires running through it |
Electricity | form of energy that can produce light, heat, magnetism, and chemical changes |
Grounding | the process of making an electrical connection between a circuit, electricity-using device, or other electricity source to the earth toreduce the chance of shock and damage |
Insulator | material that provides great resistance to the flow of electricity |
Kilowatt hour | the use of 1000 watts per hour |
National Electrical Code® | a standard for the safe installation of electrical wiring and equipment |
Ohm | a measure of the resistance of a material to the flow of an electrical current |
Resistance | any tendancy of a material to prevent electrical flow |
Short circuit | a condition that occurs when electricity flows back to its source to rapidly and trips fuses, burns wires, and drains batteries |
Volt | a measure of electrical pressure |
Voltage drop | loss of voltage as electricity travels through a wire |
Watt | a measure of energy available or work that can be done using one ampere at one volt |
Aggregate | sand and gravel that comprise the bulk of concrete |
Concrete | an artificial stone-like material formed by combining aggregate, Portland cement, and water |
Cubic yard | a standard measure of concrete equal to 27 cubic feet |
Curing | proper drying of concrete to assure maximum strength |
Floating | smoothing the surface of newly placed concrete |
Form | a frame or mold that holds newly placed concrete until it has been set |
Masonry unit | anything constructed of brick, stone, tile, or concrete units held in place with Portland cement |
Mortar | a mixture of fine aggregate (sand), mortar cement, and water that is used as bonding material in masonry work |
Portland cement | dry powder made by burning limestone and clay followed by grinding and mixing; used to make concrete |
Reinforced concrete | material placed in new concrete to increase strength; steel rods and wire are placed in forms before the concrete is placed while other reinforcement material (such as fiberglass) is added as the concrete is being mixed |
Screeding | striking off exess concrete to create a smooth and level surface |
Trowel | a hand tool used in concrete and masonry work |
Workable mix | the consistency of wet concrete when the various ingredients are mixed together correctly |
Back Sight (BS) | a rod reading taken on a point of known elevation |
Benchmark (BM) | a permanent point of known or assumed elevation from which a survey started |
Chain | a unit of measurement which equals 66 feet |
Contour line | a line connecting points on the land surface which have the same elevation |
Differential leveling | the process of determining the releative elevations of various points; determining elevation differences between points |
Foresight | a rod reading taking place on a point of unknown elevation |
Global Positioning System (GPS) | a satellite-based navigation system |
Height of instrument | the elevation of the level line of sight of the crosshairs in the instrument with respect to the benchmark |
Turning point | a temporary point for a transit while doing differential leveling |
Created by:
20611456
Popular Agriculture sets